Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Removal of Ethoxylated Alkylpehol (NPEG) with TiO2/ Au Catalysts: Kinetic and Initial Transformation Path

Claudia Aguilar
* ,
Mayra Garcia
ORCID logo ,
Carlos Montalvo
,
Edgar Moctezuma
,
Francisco Anguebes
,
Mohamed Abatal
ORCID logo ,
Sandra Figueroa
ORCID logo
Version 1 : Received: 14 August 2020 / Approved: 14 August 2020 / Online: 14 August 2020 (11:23:10 CEST)

A peer-reviewed article of this Preprint also exists.

Aguilar, C.; Garcia, M.; Montalvo, C.; Anguebes, F.; Moctezuma, E.; Abatal, M.; Figueroa, S. Removal of Nonylphenol Polyethylene Glycol (NPEG) with Au-TiO2 Catalysts: Kinetic and Initial Transformation Path. Catalysts 2020, 10, 1205. Aguilar, C.; Garcia, M.; Montalvo, C.; Anguebes, F.; Moctezuma, E.; Abatal, M.; Figueroa, S. Removal of Nonylphenol Polyethylene Glycol (NPEG) with Au-TiO2 Catalysts: Kinetic and Initial Transformation Path. Catalysts 2020, 10, 1205.

Abstract

Gold nanoparticles, were deposited in titanium oxide (TiO2) Degussa-P25 with the Photodeposition method in the presence of UV light at different concentrations. It was determined by diffuse reflectance (DF), Scanning electron microscopy (SEM), that the Photodeposition method is effective for the inclusion of gold particles on the surface. The catalyst band gap showed a reduction to 2.9 e.V, as well as it was observed that the gold-doped catalyst shows absorption in the visible light range around 500 to 600 nm. The percentage of deposited gold nanoparticles was determined by energy dispersive spectroscopy (EDS). The experimental data were analyzed using different analytical techniques (UV-Vis spectrophotometry, TOC total organic carbon), with these results a carbon-based mass balance and reaction kinetics were generated using the Langmuir-Hinshelwood (LH-HW) heterogeneous catalysis model. For the estimation of the kinetic constants, the non-linear regression of the Levengerd Marquad algorithm was used, with these results, kinetic models of the degradation of the molecule and the generation and consumption of Organic Intermediate Products (OIP) were generated.

Keywords

photocatalytic degradation; ethoxylated alkylphenols; gold titanium catalyst

Subject

Environmental and Earth Sciences, Environmental Science

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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