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Working Paper REVIEW

Fighting the SARS CoV-2 (COVID-19) Pandemic with Soap

Narendra Kumar Chaudhary, Nabina Chaudhary, Manis Dahal, Biswash Guragain, Sumie Rai, Rahul Chaudhary, K.M. Sachin, Reena Lamichhane-Khadka, Ajaya Bhattarai

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: COVID-19; SARS-Cov-2; soap; hand washing; WHO

Online: 7 May 2020 (13:48:05 CEST)

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Preprint REVIEW | doi:10.20944/preprints201607.0057.v1

PARTICULATE MATTER: AN APPROACH TO AIR POLLUTION

Francis Olawale Abulude

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: PM, pollution, environment, industrialization, health effects, standards

Online: 18 July 2016 (11:56:06 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201609.0075.v1

Selective Desulfonylation of Oxidized Sulfur Compounds in Crude Oil by Alcohol-Mediated Nucleophilic Attack Studied by XANES and XRF Spectroscopy

Jonathan Rankin, Kyle Litz, Sarah Briggs, Trent McCaskill, Michael Scudder, Syed Khalid, Raman Budhani

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: desulfurization; desulfonylation; petroleum

Online: 22 September 2016 (10:27:48 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201701.0095.v1

Visible Light-Induced Metal Free Surface Initiated Atom Transfer Radical Polymerization of Methyl Methacrylate on SBA-15

Liang Ma, Na Li, Jian Zhu, Xiao Dong Chen

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: polymeric composite; surface initiated atom transfer radical polymerization; photo-induced; living radical polymerization; metal-free atom transfer radical polymerization

Online: 22 January 2017 (04:56:44 CET)

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Preprint ARTICLE | doi:10.20944/preprints201702.0015.v1

Solvent-Free Biginelli Reactions Catalyzed by Hierarchical Zeolite Utilizing Ball Mill Technique: Green Sustainable Process

Ameen Shahid, Nesreen S. Ahmed, Tamer S. Saleh, Shaeel A. Al-Thabaiti, Sulaiman N. Basahel, Wilhelm Schwieger, Mohamed Mokhtar

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Hierarchical; MFI27; Biginelli; dihydropyrimidinones; Ball mill

Online: 5 February 2017 (09:22:49 CET)

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Preprint ARTICLE | doi:10.20944/preprints201705.0216.v1

Recyclable Cu-MOF-74 Catalyst for Ligand-Free O-Arylation Reaction of 4-Nitrobenzaldehyde and Phenol

Pedro Leo, Gisela Orcajo, David Briones, Guillermo Calleja, Fernando Martínez

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: MOF; catalyst; recyclable Cu-MOF-74; ligand-free; O-arylation reaction; 4-nitrobenzaldehyde; phenol; 4-formyldiphenyl ether

Online: 30 May 2017 (09:31:36 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201711.0187.v1

Silica Modified by Using Alcohol Polyoxyethylene Ether and Silane Coupling Agent together to Achieve High Performance Rubber Composites Using Latex Compounding Method

Junchi Zheng, Xin Ye, Dongli Han, Suhe Zhao, Xiaohui Wu, Youping Wu, Dong Dong, Yiqing Wang, Liqun Zhang

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: chemical and physical interface; surface modification of silica; latex compounding method; silica/NR composite

Online: 29 November 2017 (09:45:01 CET)

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Preprint ARTICLE | doi:10.20944/preprints201908.0268.v1

Candles from Soybean Seed Oil Extract

Modupe Ojewumi, Basil Ruth, Oyekunle Daniel

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Soybeans, Soxhlet extraction, Oil extract, solvent, Yield

Online: 26 August 2019 (13:54:14 CEST)

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Preprint REVIEW | doi:10.20944/preprints201612.0124.v1

Development of NO_x Emission and Electrochemical Detection in Atmosphere

Yu Du, Xixiang Sun, Qin Wei

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: NO2; NO; gas sensor; nitrogen oxide emission; semiconductor; carbon; electrochemical

Online: 25 December 2016 (08:38:47 CET)

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Preprint ARTICLE | doi:10.20944/preprints201612.0110.v1

The Synthesis and New Crystal Structures of Three Arylpiperazine Compounds

Jinhui Zhou, Maocai Yan, Maojian Shi, Jun Xu, Guoqiang Shangguan

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: arylpiperazine compound; X-ray crystal structure; characterization; triclinic

Online: 21 December 2016 (11:01:58 CET)

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Preprint ARTICLE | doi:10.20944/preprints201805.0179.v1

Assessment of Green Solvents and Extraction Methods for Biopesticide Preparation from Neem Azadirachta indica Leaves against Oriental Fruit Fly Bactrocera dorsalis (Hendel)

Danila S. Paragas, Kathlia Cruz, Elaida R. Fiegalan

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: rice wash; vinegar; rice wine; Soxhlet; fermentation

Online: 11 May 2018 (09:04:45 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201612.0094.v1

Synthesis, Characterization and Catalytic Performance of Well-ordered Crystalline Heteroatom Mesoporous MCM-41

Jing Qin, Baoshan Li

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: bulk crystal mesoporous MCM-41; heteroatom molecular sieves; direct hydrothermal method

Online: 18 December 2016 (10:30:52 CET)

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Preprint ARTICLE | doi:10.20944/preprints201908.0255.v1

Macrodebris and Microplastics Pollution in Nigeria: First Report on Abundance, Distribution and Composition

Enyoh Christian Ebere, Verla Andrew Wirnkor, Verla Evelyn Ngozi, Ihenetu Stanley Chukwuemeka

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: anthropogenic activities; coastal pollution; marine litter; Nigeria environment; plastics

Online: 25 August 2019 (16:42:58 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201703.0032.v1

Differential Degradation and Detoxification of an Aromatic Pollutant by Two Different Peroxidases

Aysha Hamad Alneyadi, Iltaf Shah, Synan F. AbuQamar, Syed Salman Ashraf

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: organic pollutants; enzymatic remediation; sulforhodamine B; soybean peroxidase; chloroperoxidase

Online: 6 March 2017 (07:45:32 CET)

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Preprint ARTICLE | doi:10.20944/preprints201705.0002.v1

A New Approach for the Preparation of Functional Poly(acrylonitrile-g-glycidyl methacrylate) Polymer Brush

Yating Wang, Wenxiang Wang, Hou Chen, Liangjiu Bai, Hui Xu

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: controlled/”living” radical polymerization (CRP); polymer brush; poly(acrylonitrile)

Online: 1 May 2017 (07:32:56 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201801.0035.v1

Preparation, Characterization and Catalytic Activity of Nickel Molybdate NiMoO₄ Nanoparticles

Hicham Oudghiri Hassani, Fahd T. Al Wadaani

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: nickel molybdate; nanoparticles; catalysis; reduction of nitrophenol

Online: 7 January 2018 (10:28:10 CET)

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Preprint ARTICLE | doi:10.20944/preprints201909.0110.v1

Sulfonated Carbon Material as An Efficient Solid Acid Catalyst for Biodiesel Synthesis via Oleic Acid Esterification Under High Voltage Conditions

Mohammad Mahdavi, Amir hosein Darab

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: solid acid; sulfonated carbon; high voltage; biodiesel; oleic acid

Online: 10 September 2019 (11:59:30 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201711.0104.v1

Effect of Alkane Chain Length on Crystallization in Emulsions during Supercooling in Quiescent Systems and under Mechanical Stress

Serghei Abramov, Kinza Shah, Lydia Weißenstein, Heike Petra Karbstein

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: emulsion; dispersion; crystallization; melt emulsification; crystallization index; aggregation; nucleation

Online: 16 November 2017 (05:09:39 CET)

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Preprint REVIEW | doi:10.20944/preprints201909.0244.v1

Cofactor F₄₂₀-Dependent Enzymes: An Under-Explored Resource for Asymmetric Redox Biocatalysis

Mihir V. Shah, James Antoney, Suk Woo Kang, Andrew C. Warden, Carol J. Hartley, Hadi Nazem-Bokaee, Colin J. Jackson, Colin Scott

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: cofactor F420; deazaflavin; oxidoreductase; hydride transfer; hydrogenation; asymmetric synthesis; cofactor biosynthesis

Online: 21 September 2019 (01:28:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202007.0234.v1

Microwave Extraction vs. Other Techniques for Industrial Scale Cannabis Extraction

Marilena Radoiu, Harmandeep Kaur, Anna Bakowska-Barczak, Steven Splinter

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: cannabis; THC; CBD; microwave assisted extraction; continuous flow

Online: 11 July 2020 (09:04:17 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202005.0123.v1

Facile Fabrication of Breathable and Superhydrophobic Fabric Based on Silica Nanoparticles and Amino‐Modified Polydimethylsiloxane

Mahdi Hasanzadeh, Hossein Shahriyari Far, Aminoddin Haji, Giuseppe Rosace

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Sol-gel; Hybrid coating; Superhydrophobic; textile fabric; polydimethylsiloxane; contact angle

Online: 7 May 2020 (12:46:02 CEST)

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Preprint REVIEW | doi:10.20944/preprints202003.0375.v1

Minimizing Defect States in Lead Halide Perovskite Solar Cell Materials

René M. Williams, Rosa Brakkee

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: solar energy; semiconductor; light harvesting; charge generation; photovoltaics; optimization; voltage loss; thin film materials; stabilization, doping

Online: 25 March 2020 (08:50:10 CET)

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Preprint ARTICLE | doi:10.20944/preprints201908.0254.v1

Evaluation of In-Vitro Release Kinetic and Mechanisms of Curcumin Loaded-Cockle Shell-Derived Calcium Carbonate Nanoparticles

Maryam Muhammad Mailafiya, Kabeer Abubakar, Abubakar Danmaigoro, Samaila Musa Chiroma, Ezamin Bin Abdul Rahim, Mohamad Aris Mohd Moklas, Zuki Abu Bakar Zakaria

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: cockleshell; nanoparticles; curcumin; aragonite; therapeutics; kinetic release

Online: 25 August 2019 (15:47:58 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201804.0098.v1

Experimental Analysis of Heavy Metal Uptake in Soil and Citrus Plants from Irrigation Water

Ailin Zhang, Veronica Cortes, Bradley Phelps, Hal van Ryswyk, Tanja Srebotnjak

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: oilfield produced water; wastewater; heavy metals; irrigation; bioaccumulation; soil health; California

Online: 9 April 2018 (07:48:31 CEST)

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Oilfield produced water (OPW) is used to boost freshwater sources for crop irrigation in California's agriculturally important Central Valley. OPW is known to contain salts, metals, hydrocarbons, alkylphenols, naturally radioactive materials, biocides, and other compounds from drilling and production processes. Less is known about the potential uptake and accumulation of these compounds in crops and soil irrigated with OPW. In this study 23 potted mandarin orange plants were irrigated 2-3 times weekly (depending on season) with water containing three different concentrations of the known OPW heavy metals barium, chromium, lead, and silver. Seven sets of samples of soil and leaves and all fruits were collected and processed using microwave-assisted digestion (EPA Method 3051A). Processed samples were analyzed using ICP-OES. ANOVA, ANCOVA, and Tukey’s honest significant difference test were used to examine the effects of metal concentrations in the irrigation water, sample number, and number of watering days on the metal concentrations in the soil, leaf, and fruit samples. Accumulation of barium in soil and leaves was strongly positively associated with sample and number of watering days, increasing nearly 2,000-fold. Lead also showed an upward trend, increasing up to 560-fold over baseline level. Chromium showed an increase in the soil that tapered off, but less consistent results in the leaves and fruit. The silver results were more volatile, but also indicated at least some level of accumulation in the tested media. The smallest absolute accumulation was observed for chromium. Concentrations in the fruit were highest in the peel, followed by pith and juice. Accumulation of all heavy metals was generally highest in the soil and plants that received the highest irrigation water concentration. Considering the potential for adverse human health effects associated with ingesting soluble barium contained in food and drinking water, and to a lesser extent chromium and lead, the study signals that it is important to conduct further research into whether OPW contaminants can enter the food chain and pose risks to consumers.

Preprint LETTER | doi:10.3390/sci1010018

Ground-based Measurements of Atmospheric Trace Gases in Beijing during the Olympic Games

Jie Cheng

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: B3M-IR; Trace gases; SFIT2; Remote Sensing; Olympic Games

Online: 18 March 2019 (00:00:00 CET)

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Preprint ARTICLE | doi:10.20944/preprints201808.0050.v1

High Active and Selective Ni/Ceo₂-Al₂O₃and Pd-Ni/Ceo₂-Al₂O₃ Catalysts for Oxy-Steam Reforming of Methanol

Pawel Mierczynski, Agnieszka Mierczynska, Radoslaw Ciesielski, Magdalena Mosinska, Waldemar Maniukiewicz, Magdalena Nowosielska, Agnieszka Czylkowska, Malgorzata Szynkowska, Krasimir Vasilev

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: OSRM; nickel; bimetallic catalyst; heterogeneous catalysis; Pd-Ni

Online: 2 August 2018 (16:54:10 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201804.0364.v1

Kinetics and DFT Studies of the Hydrogenation Reactions of Alkenes and Alkynes Catalyzed by (Benzoimidazol-2-ylmethyl)amine palladium(II) Complexes

Thandeka Tshabalala, Stephen Ojwach

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: palladium; catalysts; hydrogenation; kinetics; DFT

Online: 27 April 2018 (16:18:05 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201809.0458.v2

Microwave Assisted Novel Efficient Pd-free Catalyst for Suzuki C-C Coupling Reaction

Ghalia Alzhrani, Nesreen Ahmed, Elham Aazam , Mohamed Mokhtar, Tamer Saleh

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Suzuki coupling reaction; Layered double hydroxides; Solid base catalyst; Microwave irradiation

Online: 8 January 2019 (15:13:46 CET)

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Preprint ARTICLE | doi:10.20944/preprints201803.0016.v1

MgAl-Layered Double Hydroxide Solid Base Catalysts for Henry Reaction: A Green Protocol

Magda H. Abdellattif, Mohamed Mokhtar

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: C-C bond formation; henry reaction; solid base catalyst; layered double hydroxide

Online: 2 March 2018 (04:05:24 CET)

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Preprint REVIEW | doi:10.20944/preprints201907.0195.v1

Interactions of Nanoparticles and Biosystems: Microenvironment of Nanoparticles and Biomolecules in Nanomedicine

Carlota Auria-Soro, Tabata Nesma, Pablo Juanes-Velasco, Alicia Landeira-Viñuela, Helena Fidalgo-Gomez, Vanessa Acebes-Fernandez, Rafael Gongora, Maria Jesus Almendral Parra, Raul Manzano-Roman, Manuel Fuentes

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Nanoparticles, interactions, protein corona, nanomedicine

Online: 16 July 2019 (12:36:38 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201908.0093.v1

Extraction of Polyphenols and Synthesis of New Activated Carbon from Spent Coffee Grounds

Félix Antonio López, Marina Ramón Gonçalves, Lorena Alcaraz, Susana Pérez Ferreras, María Eugenia León González, Noelia Rosales Conrado

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Spent coffee grounds; polyphenols; extraction; subcritical fluid; activated carbon; methylene blue, adsorption.

Online: 7 August 2019 (10:03:43 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201805.0402.v1

Acid-Base Bifunctional Hf Nanohybrids-Enabled High Selectivity in Catalytic Conversion of Ethyl Levulinate to γ-Valerolactone

Weibo Wu, Yan Li, Hu Li, Wenfeng Zhao, Song Yang

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: heterogeneous catalysis; transfer hydrogenation; biomass conversion; biofuels; catalytic materials

Online: 28 May 2018 (12:27:29 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201806.0199.v1

Synthesis of Needle-like BiVO4 with Improved Photocatalytic Activity under Visible Light Irradiation

Trinh Duy Nguyen, Seong Soo Hong

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: needle-like BiVO4, photodegradation of Rhodamine B, monoclinic-scheelite type BiVO4

Online: 12 June 2018 (15:19:49 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201909.0311.v1

Tough Polyelectrolyte Hydrogels with Antimicrobial Property via Incorporation of Natural Multivalent Phytic Acid

Hoang Linh Bui, Chun-Jen Huang

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: polyelectrolyte; quaternary ammonium; phytic acid; multivalent ion effect; ion bridges; specific ion effect

Online: 27 September 2019 (10:37:36 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201806.0448.v1

Extractants Based on Coordinating Liquid Polar Solvents for Removal of Sulfur Compounds from Diesel Fuels

Natalia Kobotaeva, Tatiana Skorohodova, Oleg Andrienko, Elena Marakina, Victor Sachkov

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: extractants, sulfur compounds, diesel fraction, coordinating solvents, chlorides, metal trifluoroacetates, dimethylformamide

Online: 27 June 2018 (14:49:03 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201903.0084.v1

Exploring the Influence of the Microstructure on the Passive Layer Chemistry and Breakdown for Some Titanium-Based Alloys in Normal Saline Solution

Nader El-Bagoury, Sameh Ibrahim, Ola Ahmed Abu Ali, Shimaa El-Hadad, Ahmed M. Fallatah, G.A.M. Mersal, Mohamed M. Ibrahim, Joanna Wysocka, Jacek Ryl, Rabah Boukherroub, Mohammed A. Amin

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: titanium-based alloys; microstructure; passivity breakdown; pitting corrosion

Online: 7 March 2019 (06:49:58 CET)

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Preprint ARTICLE | doi:10.20944/preprints201808.0445.v1

Sunlight Assisted Photocatalytic Degradation of Ciprofloxacin in Water Using Fe Doped ZnO Nanoparticles for Potential Public Health Applications

Sourav Das, Soumen Ghosh, Ananyo Jyoti Misra, Amrita Mishra, Ashok J. Tamhankar, Cecilia Stålsby Lundborg, Suraj K. Tripathy

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: antibiotic residues; aquatic environment; ciprofloxacin; Fe doped ZnO nanoparticles; photocatalysis; sunlight

Online: 27 August 2018 (09:01:34 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202101.0333.v2

Synthesis and Deposition of Thermochromic VO2 Thin Films from Peroxide-based Chemical Solutions

Matthias Van Zele, Hannes Rijckaert, Davy Deduytsche, Christophe Detavernier, Isabel Van Driessche, Dirk Poelman, Klaartje De Buysser

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Wet chemical deposition; crystalline thin films; vanadium dioxide; thermochromism

Online: 17 February 2021 (10:38:44 CET)

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Preprint ARTICLE | doi:10.20944/preprints201806.0333.v1

Diazonium Salts: Versatile Molecular Glues for Sticking Conductive Polymers to Flexible Electrodes

Momath Lo, Rémi Pires, Karim Diaw, Diariatou Gningue-Sall, Mehmet A. Oturan, Jean-Jacques Aaron, Mohamed M. Chehimi

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: polypyrrole; diazonium salts; flexible ITO; adhesion; redox properties

Online: 21 June 2018 (06:00:43 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202202.0195.v1

Citric Acid-Assisted Preparation of Biochar Loaded with Copper/Nickel Bimetallic Nanoparticles

Jessim Omiri, Youssef Snoussi, Arvind Bhakta, Stéphanie Truong, Souad Ammar, Ahmed M. Khalil, Mohamed Jouini, Mohamed C. Chehimi

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: olea europaea; olive stone; agro-waste; slow pyrolysis; bimetallic nano-alloys; catalyzed dye degradation; Trash-to-Treasure

Online: 16 February 2022 (06:41:46 CET)

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Biochar is a carbon allotrope obtained by pyrolysis of biomass, usually agro-waste. Owing to the demand for sustainable development, biochar is continuously raising much hope in the scientific community. However, in order to impart it with new properties, its modification is required, either in situ during pyrolysis, or after the carbonization process. Herein, we propose a new direct approach to obtain bimetallic copper/nickel nanoparticle-loaded on olive stone biochar. The bimetallic-coated biochar and the reference materials bare biochar, copper-loaded and nickel-loaded biochar were prepared at 400 °C under a stream of dinitrogen from olive pit powder particles impregnated first with citric acid (CA), and then with copper and nickel nitrates. We have employed citric acid in the process in order to check its effect on the structural and textural properties of biochar supporting the metallic nanoparticles. Surprisingly, citric acid induced the formation of agglomerated or even raspberry-shaped, bimetallic copper/nickel nanoparticles. Large 450-500 nm-sized agglomerates of ~80 nm bimetallic CuNi NPs were noted for B-CA@CuNi. Interestingly, for biochar material prepared with initial Cu/Ni=10 molar ratio (B-CA@CuNi10/1), the bimetallic NPs formed unusual nano-raspberries (1748 nm in size) which are agglomerates of individual 10-20 nm-sized CuNi10/1 nanoparticles. The B-CA@CuNi and reference materials were characterized by Raman spectroscopy, scanning electron microscopy (SEM)/energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD) and magnetometry. The B-CA@CuNi and B-CA@Ni materials could be attracted efficiently with a magnet, but not B-CA@CuNi10/1 due to a low nickel loading. B-CA@CuNi was tested as a catalyst for the degradation of methyl orange (MO). Discoloration was noted within 10 min, much faster than a similar material prepared in the absence of CA. B-CA@CuNi could be recycled at least 3 times with exhibit as fast discoloration catalysis performance. This paper stresses the important role of citric acid in shaping the bimetallic nanoparticles loaded in situ on biochar during the slow pyrolysis process and to enable faster catalysed discoloration of organic dye solution.

Preprint ARTICLE | doi:10.20944/preprints201808.0095.v1

Supported Bimetallic AuPd Nanoparticles as Catalyst for the Solvent-Free Selective Hydrogenation of Nitroarenes

Ruiyang Qu, Margherita Macino, Sarwat Iqbal, Xiang Gao, Qian He, Graham J. Hutchings, Meenakshisundaram Sankar

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: bimetallic nanoparticles, solvent free hydrogenation, nitrobenzene and chloronitrobenzene.

Online: 5 August 2018 (23:00:14 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201807.0041.v1

Standard Sunscreen from Local Thai Herb

Rachadaporn Boonruang, Narongrit Lahpun, Oraphan Anurukvorakun

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Acacia catechu; stability; preservative

Online: 3 July 2018 (12:04:09 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201908.0076.v1

Dysprosium Removal from Water Using Active Carbons Obtained from Spent Coffee Ground

Lorena Alcaraz, María Esther Escudero, Francisco J. Alguacil, Irene Llorente, Ana Urbieta, Paloma Fernández, Félix Antonio López

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: dysprosium; activated carbon; spent coffee ground; adsorption

Online: 6 August 2019 (12:23:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201904.0035.v1

Dual Monitoring of Cracking and Healing in Self-healing Coatings using Microcapsules Loaded with Two Fluorescent Dyes

Young Kyu Song, Tae Hee Lee, Jin Chul Kim, Kyu Cheol Lee, Sang Ho Lee, Seung Man Noh, Young Il Park

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Extrinsic self-healing; Self-healing detection; Aggregation-induced emission; Dye-Loaded microcapsule; Self-healing monitoring

Online: 2 April 2019 (15:32:34 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201809.0265.v1

Lignocellulosic Biomass as Source for Lignin-Based Environmentally Benign Antioxidants

Abla Alzagameem, Basma El Khaldi-Hansen, Dominik Büchner, Michael Larkins, Birgit Kamm, Steffen Witzleben, Margit Schulze

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: antioxidant activity, biomass, Folin-Ciocalteu assay, lignin, lignocellulose feedstock, organosolv, total phenol content

Online: 14 September 2018 (13:29:47 CEST)

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Antioxidant activity is an essential feature required for oxygen-sensitive merchandise and goods, such as food and corresponding packaging as well as materials used in cosmetics and biomedicine. For example, vanillin, one of the most prominent antioxidants, is fabricated from lignin, the second most abundant natural polymer in the world. Antioxidant potential is primarily related to the termination of oxidation propagation reactions through hydrogen transfer. The application of technical lignin as a natural antioxidant has not yet been implemented in the industrial sector, mainly due to the complex heterogeneous structure and polydispersity of lignin. Thus, current research focuses on various isolation and purification strategies to improve the compatibility of lignin material with substrates and enhancing its stabilizing effect. This contribution presents antioxidant capacity studies of various lignins depending on purification degree of the raw material. In detail, the antioxidant potential of lignin-based compounds is studied using the DPPH (2,2-diphenyl-1-picrylhydrazyl) assay. The purification procedure was monitored by thin layer chromatography (TLC) and showed that double-fold selective extraction is the most efficient purification procedure (confirmed by UV-Vis, FTIR, HSQC and 31P NMR spectroscopy, SEC and XRD analysis). Results are discussed regarding the dependency of antioxidant activity on lignin structure and biomass source. Thus, lignins obtained from industrial black liquor are compared with beech wood samples. In addition, the influence of lignin isolation (kraft versus organosolv) is discussed. Values of the antioxidant activity (DPPH inhibition) of kraft lignin fractions were 62-68% while beech and spruce/pine-mixed lignins showed values between 26, 64 and 42%, respectively. TPC values of the different isolated kraft lignin fractions varied between 26-35%, while beech, spruce/pine lignins were 34, 30 and 34%, respectively. Storage decreased the TPC values and increased the DPPH inhibition.

Preprint ARTICLE | doi:10.20944/preprints201812.0263.v1

Phase Change and Regeneration Behaviors of Amino Acid Ionic Liquids Absorbents

Xueqin Chen, Hui Guo, Huang Ouyang, Qiongfang Song, Zhengguang Sun, Ziqiang Xu, Cao Li, Bingbing Jiang

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Amino acid ionic liquid; phase change solvent; high CO2 absorption capacity; mechanism of phase change; recycling ability

Online: 21 December 2018 (15:26:24 CET)

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Preprint ARTICLE | doi:10.20944/preprints201810.0123.v4

Chitosan Decorated Copper Nanoparticles as Efficient Catalyst for Synthesis of Novel Quinoline Derivatives

Kahdijah S. Alghamdi, Nesreen S.I. Ahmed, D. Bakhotmah, Mohamed Mokhtar M. Mostafa

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: chitosan-copper NPs; quinolone derivatives; ultrasonic irradiation; one- pot synthesis; green-sustainable perspectives

Online: 19 December 2018 (03:25:20 CET)

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Preprint ARTICLE | doi:10.20944/preprints201909.0221.v1

The ex-situ immobilization experiment of heavy metals in dredged marine sediments from Bohai Bay, China

Wensi Zhang, Xiao Wang, Baolin Liu

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: dredged marine sediment; heavy metal; immobilization; kaolinite; limestone

Online: 19 September 2019 (11:24:05 CEST)

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Working Paper ARTICLE

Development of Nitride-Sensors for Monitoring in Control Systems

Monzer Krishan, Ahmad Alkhawaldeh, Abdel-Hamid Soliman

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Diluted magnetic semiconductors (DMS), Manganese Mn-doped GaN (Mn.Gac.N), Spintronic, Opto-electronic devices

Online: 17 May 2019 (16:16:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201809.0607.v1

Effects of Limonene on the PAHs mutagenicity risk in Roasted Fish Skin

Yu-Wei Chen, Ping-Hsiu Huang, Yung-Hsiang Tsai, Chii-Ming Jiang, Chih-Yao Hou

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Roasted Fish Skin, PAHs mutagenicity risk, Limonene

Online: 30 September 2018 (10:03:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201810.0227.v1

Fabrication and Internal Functionalization of Highly Macroporous WO₃Thin Films

Maria Ojeda, Cale Gaster, Clifton Harris

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: thin films; WO3; photocatalysis

Online: 11 October 2018 (04:10:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202101.0160.v1

CytroCell: Valued Cellulose from Citrus Processing Waste

Antonino Scurria, Lorenzo Albanese, Mario Pagliaro, Federica Zabini, Francesco Giordano, Francesco Meneguzzo, Rosaria Ciriminna

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: cellulose; lemon; grapefruit; citrus processing waste; hydrodynamic cavitation; bioeconomy

Online: 8 January 2021 (13:25:17 CET)

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Preprint ARTICLE | doi:10.20944/preprints202111.0149.v1

Environmentally Friendly Polyvinyl alcohol−alginate/bentonite Nanocomposite Hydrogel Beads as Efficient Adsorbents for Removal of Toxic Methylene Blue from Aqueous Solution

Mona A. Aziz Aljar, Suad Rashdan, Ahmed Abd El-Fattah

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Alginate; polyvinyl alcohol; bentonite clay; nanocomposites hydrogel; cationic dyes; water remediation.

Online: 8 November 2021 (14:30:34 CET)

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Hazardous chemicals like toxic organic dyes are very harmful to the environment and their removal is quite challenging. Therefore there is a necessity to develop techniques, which are environment friendly, cost-effective and easily available in nature for water purification and re-mediation. The present research work is focused on the development` and characterization of the ecofriendly polyvinyl alcohol (PVA) and alginate (Alg) hydrogel beads incorporating natural bentonite (Bent) clay as beneficial adsorbents for removal of toxic methylene blue (MB) from industrial water. PVA−Alg/Bent nanocomposite hydrogel beads with different Bent content (0, 10, 20, and 30 wt%) were synthesized via external ionic gelation method. The designed porous and steady structure beads were characterized by the use of Fourier transform infrared spectroscopy (FTIR), energy-dispersive X-ray spectroscopy (EDX), and scanning electron microscopy (SEM). The performance of the beads as MB adsorbents was investigated by treating batch aqueous solutions. The experimental results indicated that the incorporation of Bent (30 w%) in the nanocomposite formulation sustained porous structure, preserved water uptake, and increased MB removal effi-ciency by 230 % compared to empty beads. Designed beads possessed higher aﬃnity to MB at high pH 8, 30 °C, and ﬁtted well to pseudo-second-order kinetic model a high correlation coeﬃcient. Moreover, designed beads had a good stability and reusability as they exhibited excellent removal eﬃciency (90%) after six consecutive adsorption-desorption cycles. Adsorption process was found be combination of both monolayer adsorption on homogeneous surface and multilayer adsorption on heterogeneous surface. The maximum adsorption capacity of the designed beads system as calculated by Langmuir isotherm was found to be 51.34 mg/g, which is in good agreement with the reported clay-related adsorbents. The designed PVA−Alg/Bent nanocomposite hydrogel beads demonstrated good adsorbent properties and could be potentially used for MB removal from polluted water.

Preprint ARTICLE | doi:10.20944/preprints201807.0538.v1

Developing a High-Temperature Solvent-Free System for Efficient Biosynthesis of Octyl Ferulate

Shang-Ming Huang, Ping-Yu Wu, Jiann-Hwa Chen, Chia-Hung Kuo, Chwen-Jen Shieh

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: ferulic acid esters; octyl ferulate; esterification; Box-Behnken design; response surface methodology; molar conversion; optimum condition

Online: 27 July 2018 (11:43:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202007.0729.v1

A Scientometric Analysis of Catalysis Research

Rosaria Ciriminna, Irina L. Simakova, Mario Pagliaro, Dmitry Yu. Murzin

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: scientometric analysis; catalysis; bibliometric indicators; catalysis research; catalysis journals

Online: 31 July 2020 (04:36:20 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202009.0057.v1

Recovery and Reuse of Chromium Ions from Tannery Wastewater by Precipitation Reaction Method

Mohammed Tabidi

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Chromium; precipitation; tanning; leather industries; wastewater; sodium hydroxide

Online: 3 September 2020 (04:54:26 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201805.0114.v2

Comparison of the Properties of Activated Carbons Produced in a One-Stage and a Two-Stage Process

Davide Bergna, Toni Varila, Henrik Romar, Ulla Lassi

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: biomass; bio-char; activation; activated carbon; thermal treatment; physical activation; porosity; specific surface areas

Online: 25 June 2018 (05:08:15 CEST)

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Working Paper ARTICLE

Preparation and Characterization of Polyvinyl Guanidineacetic (PVG) Membrane for Biodiesel Production

Wenying Shi, Hongbin Li, Bin Yu, Haixia Zhang, Yuheng Su

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: PVG (polyvinyl Guanidineacetic); PVA (polyvinyl alcohol); guanidineacetic groups; biodiesel; transesterification

Online: 21 September 2019 (01:38:06 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201807.0599.v1

Tantalum and Niobium Selective Extraction by Alkyl-Acetophenone

Moussa Toure, Guilhem Arrachart, Jean Duhamet, Stephane Pellet-Rostaing

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: 4-Methylacetophenone; Refractory metals; Solvent extraction; Selective recovery

Online: 30 July 2018 (22:03:33 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202201.0013.v1

Transformation of Triglycerides to Fatty Acid Methyl Esters with Hydrophilic Sulfonated Silica (SiO₂-SO₃H) as Catalyst and Quaternary Ammonium Salts in Toluene or DMSO

Sandro Luiz Barbosa Santos, Adeline C. Pereira Rocha, David Lee Nelson, Milton Souza Freitas, Antônio A. P. Fulgêncio Mestre, stanlei Ivair Klein, Giuliano Cesar Clososki, Franco Jazon Caires, Danilo L. Flumignan, Letícia Karen dos Santos, Alexandre Pereira Wentz, Vânya M. Duarte Pasa, Regiane D. Fernandes Rios

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: hydrophilic sulfonated silica catalyst; Aliquat 336; tetrabutylammonium tetrafluoroborate; transesterification; fatty acid methyl esters, DMSO.

Online: 4 January 2022 (15:24:55 CET)

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Preprint ARTICLE | doi:10.20944/preprints201904.0178.v1

Viability of 4 Wild Strains L. paraplantarum, L. plantarum, W. paramesenteroides, and E. faecalis in Fermented Probiotic Grape Marmalade during Storage at both 5°C and 25°C

Lesly Samedi, Albert Linton Charles

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: anti-oxidative properties; DPPH; grape marmalade; lactobacillus; probiotics

Online: 16 April 2019 (10:27:52 CEST)

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Preprint REVIEW | doi:10.20944/preprints202101.0181.v1

Lignins Isolated via Catalyst-free Organosolv Pulping from Miscanthus x giganteus, M. sinensis, M. robustus and M. nagara: A Comparative Study

Margit Schulze, Michel Bergs, Yulia Monakhova, Bernd Diehl, Christopher Konow, Goerg Völkering, Ralf Pude

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Miscanthus x giganteus; Miscanthus sinensis; Miscanthus robustus; Miscanthus nagara; lignin; monolignol ratio; low-input crops

Online: 11 January 2021 (10:50:07 CET)

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Preprint ARTICLE | doi:10.20944/preprints202001.0307.v1

Hybrid TiO₂-Polyaniline Photocatalysts and Their Application in Building Gypsum Plasters

Agnieszka Sulowska, Izabela Wysocka, Daniel Pelczarski, Anna Zielińska-Jurek

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: hybrid nanocomposites; polyaniline; titanium(IV) oxide; photocatalytic gypsum plaster

Online: 26 January 2020 (04:32:12 CET)

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Preprint ARTICLE | doi:10.20944/preprints201809.0402.v1

Application of New Sodium Vinyl Sulfonate-co-2-Acrylamido-2-methylpropane Sulfonic Acid Sodium Salt—Magnetite Cryogel Nanocomposites for Fast Methylene Blue Removal from Industrial Waste Water

Ayman M. Atta, Sami A. Al-Hussain, Hamad A. Al-Lohedan, Abdelrahman O. Ezzat, Ahmed M. Tawfeek

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: methylene blue; water treatment; magnetic nanomaterials; cryogel; nanocomposites

Online: 20 September 2018 (06:33:48 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201806.0347.v1

Unsymmetrical Spiroalkanedithiols Having Mixed Fluorinated and Alkyl Tailgroups of Varying Length: Film Structure and Interfacial Properties

Pawilai Chinwangso, Lydia R. St. Hill, Maria D. Marquez, T. Randall Lee

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Spiroalkanedithiols; homogeneously mixed monolayers; self-assembled monolayers; SAMs; fluorinated

Online: 22 June 2018 (06:01:02 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201811.0011.v1

Synthesis of Novel Biologically Active Thiazole Dyes and Their Applications

Sarra Abu-Melha

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: thiazolyl dyes; anticancer; antioxidant; colour assessment

Online: 2 November 2018 (04:28:50 CET)

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Preprint ARTICLE | doi:10.20944/preprints202101.0333.v1

Synthesis and Deposition of Thermochromic VO2 Thin Films from Peroxide-based Chemical Solutions

Matthias Van Zele, Hannes Rijckaert, Davy Deduytsche, Christophe Detavernier, Isabel Van Driessche, Dirk Poelman, Klaartje De Buysser

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Wet chemical deposition; crystalline thin films; vanadium dioxide; thermochromism

Online: 18 January 2021 (12:28:03 CET)

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Preprint ARTICLE | doi:10.20944/preprints202108.0515.v1

Decomposition of Dimethoate and Omethoate in Aqueous Solutions – Half-Life, Neurotoxicity and Mechanism of Hydrolysis

Vladan J. Anićijević, Milena Petković, Igor A Pašti, Tamara Lazarević-Pašti

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: organophosphate; pesticide; pH stability; toxicity; Apis mellifera

Online: 27 August 2021 (10:49:28 CEST)

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Working Paper ARTICLE

An Efficient Electrocatalyst for Oxygen Evolution Reaction in Alkaline Solutions Derived from a Copper Chelate Polymer via in-situ Electrochemical Transformation

Ridwan P. Putra, Hideyuki Horino, Izabela I. Rzeznicka

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: electrocatalyst; oxygen evolution reaction; dithiooxamide; chelate polymers; copper oxides; metal-air batteries; alkaline

Online: 21 January 2020 (09:04:30 CET)

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Preprint ARTICLE | doi:10.20944/preprints201904.0006.v1

Facile Synthesis of Di-Mannitol Adipate Ester-Based Zinc Metal Alkoxide As Bi-Functional Additives for PVC

Yuepeng Li, Degang Li, Wenyuan Han, Manqi Zhang, Bing Ai, Lipeng Zhang, Hongqi Sun, Zhen Cui

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: PVC; thermal stabilizers; bi-functional; di-mannitol adipate ester-based zinc metal alkoxide; plasticizers

Online: 1 April 2019 (10:08:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202109.0331.v1

Batch Adsorption, Kinetics, and DFT study of Cd(II) Ion From Aqueous Solution By Low-Cost Starch-Based Activated Carbon

Saad Melhi Alshahrani, Bushra Bostan, Saeed Ullah Jan, Adnan Ali Khan, Khan Badsha, Saeed Ullah

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Adsorption; DFT; Cadmium(II) ion; Activated carbon; Kinetics; Thermodynamics

Online: 20 September 2021 (12:22:22 CEST)

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Preprint COMMUNICATION | doi:10.20944/preprints201908.0192.v1

Generation of Optical Absorption Band in Colloidal Coffee at Extremely Alkaline pH

Arindam Kushagra, Akshaya Pandey

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: caffeine; colloidal coffee; optical absorption; pH sensor; solute-solvent interactions; UV absorber

Online: 19 August 2019 (04:14:30 CEST)

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Preprint REVIEW | doi:10.20944/preprints202201.0290.v1

4H-SiC Schottky Barrier Diodes as Radiation Detectors: A Review

Ivana Capan

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Schottky barrier diodes; 4H-SiC; radiation; detection

Online: 20 January 2022 (08:38:21 CET)

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Preprint ARTICLE | doi:10.20944/preprints201809.0447.v1

Photoactive ZnO Materials for Solar Light Induced Cu_xO-ZnO Catalyst Preparation

Magdalena Brzezińska, Patricia García-Muñoz, Agnieszka Ruppert, Nicolas Keller

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: ZnO; photo-oxidation; 4-chlorophenol; CuxO-ZnO catalyst; photodeposition

Online: 22 September 2018 (23:38:14 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202202.0129.v2

Performance of Marine Sponge Symbiont Bacteria and Bacterial Isolates from Seawater in Pyrene Biodegradation

Ismail Marzuki, Khairun Nisaa, Ruzkiah Asaf, Mudian Paena, Admi Athirah, Endang Susianingsih, Nurhi-dayah Nurhidayah, Ince Ayu Khairana Kadriah, Kamaruddin Kamaruddin, Sahabuddin Sahabuddin, Nurbaya Nurbaya, Early Septiningsih, Herlinah Herlinah, Erfan Andi Hendrajat, Suwardi Suwardi, Andi Ramlan

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: biodegradation; pyrene; pollutants; bacteria; marine sponges; polluted seawater

Online: 22 April 2022 (03:32:48 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201904.0066.v1

A Correction Method of Mixed Pesticide Content Prediction in Apple by Using Raman Spectra

Yan Li, Yankun Peng, Jianwei Qin, Kuanglin Chao

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Raman spectra; mixed pesticides; apple; correction method; rapid; real-time

Online: 5 April 2019 (15:17:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201809.0036.v1

UV sensitization of nitrate and sulfite: A powerful tool for groundwater remediation

Yaal Lester, Asmaa Dabash, Darine Eghbareya

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Photo-sensitization; nitrate; sulfite, 1,4-dioxane, groundwater

Online: 3 September 2018 (13:45:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201912.0281.v1

Genetic Algorithm Design of MOF-Based Gas Sensor Arrays for CO₂-in-Air Sensing

Brian A. Day, Christopher E. Wilmer

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: genetic algorithms; MOFs; metal-organic frameworks; molecular modelling; arrays

Online: 21 December 2019 (10:55:20 CET)

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Preprint REVIEW | doi:10.20944/preprints202112.0092.v1

Computer Simulations of Deep Eutectic Solvents. Challenges, Solutions, and Perspectives

Dmitry Tolmachev, Natalia Lukasheva, Ruslan Ramazanov, Victor Nazarychev, Natalia Borzdun, Igor Volgin, Maria Andreeva, Artyom Glova, Sofia Melnikova, Alexey Dobrovskiy, Steven A. Silber, Sergey Larin, Rafael Maglia de Souza, Mauro Carlos Costa Ribeiro, Sergey Lyulin, Mikko Karttunen

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: deep eutectic solvents; computer simulation; quantum mechanics; molecular dynamics; machine leaning.

Online: 6 December 2021 (16:16:32 CET)

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Preprint ARTICLE | doi:10.20944/preprints202012.0034.v1

Volatile Compounds of Lemon and Grapefruit IntegroPectin

Antonino Scurria, Marzia Sciortino, Alessandro Presentato, Claudia Lino, Elena Piacenza, Lorenzo Albanese, Federica Zabini, Francesco Meneguzzo, Domenico Nuzzo, Mario Pagliaro, Delia Francesca Chillura Martino, Rosa Alduina, Giuseppe Avellone, Rosaria Ciriminna

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: IntegroPectin, lemon, grapefruit, pectin, waste citrus peel, -terpineol, hydrodynamic cavitation, circular economy

Online: 1 December 2020 (15:07:35 CET)

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Preprint REVIEW | doi:10.20944/preprints202004.0148.v1

Well-defined Conjugated Macromolecules in Sensing

Agata Krywko-Cendrowska, Dawid Szweda, Roza Szweda

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: well-defined macromolecules; sequence-defined macromolecules; sequence-defined polymers; conjugated oligomers; oligo(arylene ethynylene)s; biosensors; sensors; process monitoring

Online: 9 April 2020 (10:06:28 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201907.0111.v1

Interaction and Surface Modification of Biomaterials with Cells Based on Carbon Nanomaterials

Vajradhar Lather

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: carbon nanomaterials; biological materials; cell interactions; surface decoration

Online: 8 July 2019 (08:21:09 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201910.0196.v1

Dual-Wavelength (UV and Blue) Controlled Photopolymerization Confinement for 3D-Printing: Modeling and Analysis of Measurements

Jui-Teng Lin, Da-Chuan Cheng, Kuo-Ti Chen, Hsia-Wei Liu

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: kinetic model; dual-wavelength; photopolymerization; spatial confirmation; additive manufacturing; 3d printing

Online: 17 October 2019 (12:33:03 CEST)

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Preprint REVIEW | doi:10.20944/preprints202008.0234.v1

Green Catalysts: Applied and Synthetic Photosynthesis

Alexandra H. Teodor, Benjamin D. Sherman, Zeah Yvette Ison, Eu-Jee Ooi, Jesse J. Bergkamp, Barry D. Bruce

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Photosynthesis; Photoelectrochemical Devices; Biohybrid; Synthetic Biology; Photochemistry; Photoelectrochemistry; Hydrogen Evolution

Online: 10 August 2020 (04:20:58 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202005.0511.v1

Mid-infrared Laser Spectroscopy Detection and Quantification of Explosives in Soils Using Multivariate Analysis and Artificial Intelligence

Leonardo C. Pacheco-Londoño, Eric Warren, Nataly J. Galan-Freyle, Reynaldo Villarreal-Gonzalez, Joaquin A. Aparicio-Bolaño, Maria L. Ospina-Castro, Wei-Chuan Shih, Samuel P. Hernandez-Rivera

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: quantum cascade laser; remote detection; partial least squares; high explosives; artificial intelligence; machine learning

Online: 31 May 2020 (20:57:47 CEST)

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Preprint REVIEW | doi:10.20944/preprints202201.0448.v1

Majority and Minority Charge Carrier Traps in n-type 4H-SiC Studied by Junction Spectroscopy Techniques

Ivana Capan

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: 4H-SiC; Schottky barrier diodes; defects; DLTS

Online: 31 January 2022 (11:09:16 CET)

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Preprint ARTICLE | doi:10.20944/preprints201808.0328.v1

Spatial Distribution of DDT and Its Metabolites in Soils from Indoor Residual Spraying in Tshilamusi Village, Limpopo

Wilson Gitari, Tonderai Makoni, Vernon Somerset, Omotola Babajide

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: application; organochlorine; pesticides; metabolites; homesteads; soils

Online: 18 August 2018 (07:53:56 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201809.0552.v1

Preparation of Renewable Bio-Polyols from Two Species of Colliguaja for Rigid Polyurethane Foams

Diana Abril-Milán, Oscar Valdés, Yaneris Mirabal-Gallardo, Alexander F. de la Torre, Carlos Bustamante, Jorge Contreras

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Colliguaya integerrima; Colliguaja salicifolia; vegetable oil; bio-polyol; renewable resources

Online: 28 September 2018 (04:44:48 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201811.0091.v1

The Synthesis and Characterisations of Porous Thioamide-Sulfonated-Modified Poly (Acrylonitrile-Co-Divinylbenzene-80) as a Potential Sorbent to Capture Polar Analytes

Farhana Syakirah Ismail, Siti Nurul Ain Md. Jamil, Peter A. G. Cormack, Luqman Chuah Abdullah, Sazlinda Kamaruzaman, Rusli Daik

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: polyacrylonitrile; chemical modification; thiourea; polar pharmaceuticals; sulphonation; dispersion-solid phase extraction

Online: 5 November 2018 (08:48:52 CET)

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Preprint REVIEW | doi:10.20944/preprints201905.0138.v1

Low-Power Detection of Food Preservatives by a Novel Nanowire-Based Sensor Array

Dario Zappa

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: metal-oxides nanowires; chemical sensing; sensor array; electronic noses, food preservation

Online: 13 May 2019 (01:44:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201810.0167.v1

Phytosterol Composition of Arachis hypogaea Seeds from Different Maturity Classes

Wenxu Zhou, William D. Branch, Lissa Gilliam, Julie A. Marshall

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: phytosterols; mesocarp; oilseed; maturity; pod-blast; α-tocopherol; oil bodies; campesterol; stigmasterol; β-sitosterol

Online: 9 October 2018 (04:02:35 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201907.0252.v1

A Green Ultrasound-Assisted Extraction Optimization of the Natural Antioxidant and Anti-aging Flavonolignans from Milk Thistle Silybum marianum (L.) Gaertn. Fruits for Cosmetic Applications

Samantha Drouet, Emilie Leclerc, Laurine Garros, Duangjai Tungmunnithum, Atul Kabra, Bilal Haider Abbasi, Eric Lainé, Christophe Hano

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Silybum marianum; silymarin; flavonolignans; ultrasound-assisted extraction; design of experiement; antioxidant; anti-aging

Online: 23 July 2019 (09:51:35 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202005.0496.v1

Exploring the Potential of β-Catenin O-GlcNAcylation by Using Fluorescence-Based Engineering and Imaging

Angelina Kasprowicz, Corentin Spriet, Christine Terryn, Matthew G. Alteen, Tony Lefebvre, Christophe Biot

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: bioorthogonal chemistry; fluorescence; glycosylation; metabolic incorporation; GFP; beta-catenin

Online: 31 May 2020 (19:37:26 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201911.0203.v1

On the Active Adsorption of Chromium(III) from Alkaline Solutions Using Multi-Walled Carbon Nanotubes

Francisco J. Alguacil, Félix A. López

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: carbon nanotubes; chromium; wastewaters; adsorption

Online: 17 November 2019 (13:17:04 CET)

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Preprint ARTICLE | doi:10.20944/preprints202310.0535.v1

Dissolved Calcium in Kentucky Lake and Its Watershed: Trends and Possible Sources and Implications for Zebra Mussel Colonization

Kelsie Meystedt, Bommanna G Loganathan, Susan P. Hendricks, David S. White

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Dissolved Calcium; Kentucky Lake; Streams; Ohio River; Zebra Mussel

Online: 9 October 2023 (12:33:42 CEST)

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Dissolved calcium (Ca2+) concentrations in freshwater ecosystems are of growing concern as increasing levels have been implicated in altering the environmental conditions and biodiversity. Elevated Ca2+ levels and sporadic re-emergence and disappearance of invasive zebra mussels in Kentucky Lake in recent years served as a motivation for this study. The objective of this study was to determine Ca2+ spatial and temporal patterns in Kentucky Lake, selected tributary streams, and the Ohio River during and following a zebra mussel invasion. Over 1000 water samples were collected and analysed for dissolved calcium during 2018-2022. Approved analytical methods were followed for sampling and measuring dissolved calcium levels. Results revealed significant spatial and temporal patterns. Kentucky Lake Ca2+ levels varied between 15-25 mg/L depending on the sampling location and month/year. Kentucky Lake channel sites exhibited comparably higher concentrations of Ca 2+ than did most embayment and/or stream sites, indicating that tributary streams did not serve as primary sources of calcium to the lake. Dissolved calcium levels at main lake sites exceeded the threshold for zebra mussel growth and reproduction in 2018 during the time when zebra mussels were present. Calcium in lake water samples collected from 2019 through 2022 was at or just below the threshold. Temporal trend data showed a gradual increase in Ca2+ in Kentucky Lake throughout the study period but remaining at or below the threshold level considered critical for the zebra mussels’ reproduction and development. Calcium levels in the Ohio River site at Paducah were similar to Kentucky Lake reflecting the predominance of Tennessee River water, while levels at the Brookport site were consistent with values known to support zebra mussel populations. The elevated calcium levels in Kentucky Lake waters during the late winter and early spring months may be due to natural sources (mineral weathering) as well as human activities in the Tennessee River basin. This study emphasizes the need for continued calcium monitoring in the watershed to determine the potential for future zebra mussel outbreaks and potential influences on the lake ecosystem and its functions.

Preprint ARTICLE | doi:10.20944/preprints202201.0207.v1

Structural and Optical Characterizations of Cadmium Chalcogenide Layers on Polyamide Formed Using Monotelluropentathionic Acid

Remigijus Ivanauskas, Linas Samardokas, Judita Sukyte, Skirma Zalenkiene, Ingrida Ancutiene

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: monotelluropentathionic acid; surface properties; functional materials; thin layers

Online: 14 January 2022 (11:30:41 CET)

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Preprint REVIEW | doi:10.20944/preprints202210.0387.v1

Seaweed Extracts as Bio-stimulants for Rice Plant (Oryza sativa) – a Review

Siti Zaleha Abd Tahar, Siew Eng How, Mok Sam Lum, Noumie Surugau

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: bio-stimulant; seaweed liquid extract; rice; Oryza sativa; plant growth promoter

Online: 25 October 2022 (10:55:27 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201904.0075.v1

PEGylated Polyurea Bearing Hindered Urea Bond for Drug Delivery

Meishan Chen, Xiangru Feng, Weiguo Xu, Yanqiao Wang, Yanan Yang, Zhongyu Jiang, Jianxun Ding

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: amphiphilc copolymer; hydrolyzable polyurea; micelle; controlled drug delivery; cancer chemotherapy

Online: 8 April 2019 (08:35:46 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202007.0748.v1

Effect of Irrigation System and Soil Conditioners on Growth and Essential Oil of Rosmarinus officinalis L. Cultivated in Egypt

Elsayed Omer, Saber Hendawy, Abdel Nasser ElGendy, Alberto Mannu, Giacomo L. Petretto, Giorgio Pintore

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Rosmarinus officinalis L.; surface and subsurface drip irrigation; bentonite; Hundz conditioner; essential oil

Online: 31 July 2020 (13:43:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202110.0333.v1

Evaluation of Nb₂O₅ Ceramic Nanofibers Efficacy to Promote CO₂ Photoconversion

Ana Prado, Joao Malafatti, Jessica Oliveira, Caue Ribeiro, Miryam Rincón, Ana Luz, Elaine Paris

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Nb2O5; CO2 conversion; Photocatalysis; Electrospinning; Nanofibers.

Online: 22 October 2021 (15:38:01 CEST)

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Chemistry and Materials Science