Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Photocatalytic and Cathode Active Abilities of Ni-Substituted α-FeOOH Nanoparticles

Ahmed Ibrahim
ORCID logo ,
Mikan Shiraishi
,
Zoltan Homonnáy
,
Stjepko Krehula
,
Marijan Marciuš
ORCID logo ,
Arijeta Bafti
,
Luka Pavic
ORCID logo ,
Shiro Kubuki
* ORCID logo
Version 1 : Received: 20 August 2023 / Approved: 21 August 2023 / Online: 21 August 2023 (07:21:12 CEST)

A peer-reviewed article of this Preprint also exists.

Ibrahim, A.; Shiraishi, M.; Homonnay, Z.; Krehula, S.; Marciuš, M.; Bafti, A.; Pavić, L.; Kubuki, S. Photocatalytic and Cathode Active Abilities of Ni-Substituted α-FeOOH Nanoparticles. Int. J. Mol. Sci. 2023, 24, 14300. Ibrahim, A.; Shiraishi, M.; Homonnay, Z.; Krehula, S.; Marciuš, M.; Bafti, A.; Pavić, L.; Kubuki, S. Photocatalytic and Cathode Active Abilities of Ni-Substituted α-FeOOH Nanoparticles. Int. J. Mol. Sci. 2023, 24, 14300.

Abstract

The present study investigates the relationship between the local structure, photocatalytic ability, and cathode performances in sodium-ion batteries (SIBs) and lithium-ion batteries (LIBs) using Ni-substituted goethite nanoparticles (NixFe1-xOOH NPs) with a range of 'x' values from 0 to 0.5. The structural characterization was performed applying various techniques, including X-ray diffractometry (XRD), Thermogravimetry differential thermal analysis (TG-DTA), Fourier Transform Infrared Spectroscopy (FT-IR), X-ray absorption spectroscopy (XANES/EXAFS), both measured at room temperature (RT), and 57Fe Mössbauer spectroscopy recorded at RT and at low temperatures (LT) from 20 K to 300 K, Brunauer-Emmett-Teller surface area measurement (BET), and diffuse reflectance spectroscopy (DRS). In addition, the electrical properties of NixFe1-xOOH NPs were evaluated by impedance spectroscopy. XRD showed the presence of goethite as the only crystalline phase in prepared samples with x ≤ 0.20, and goethite and α-Ni(OH)2 in the samples with x > 0.20. Sample with x = 0.10 (Ni10) showed the highest photo-Fenton ability with a first-order rate constant value (k) of 15.8×10-3 min-1. The 57Fe Mössbauer spectrum of Ni0, measured at RT, displayed a sextet corresponding to goethite, with an isomer shift (δ) of 0.36 mm s-1 and a hyperfine magnetic distribution (Bhf) of 32.95 T. Moreover, the DC conductivity decreased from 5.52×10-10 to 5.30×10-12 (Ω.cm)–1 with 'x' increasing from 0.10 to 0.50. Ni20 showed the highest initial discharge capacity of 223 mAh g-1, attributed to its largest specific surface area of 174.0 m2 g-1. In conclusion, NixFe1-xOOH NPs can be effectively utilized as visible-light-activated catalysts and active cathode materials in secondary batteries.

Keywords

goethite nanoparticles; impedance spectroscopy; Fourier Transform Infrared Spectros-copy (FT-IR); visible-light activated photocatalyst; cathode active material; sodium-ion batteries; lithium-ion batteries

Subject

Chemistry and Materials Science, Nanotechnology

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.

Download PDF

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.

Leave a public comment
Send a private comment to the author(s)
* All users must log in before leaving a comment
Views 0
Downloads 0
Comments 0
Metrics 0
Get PDF Cite Share 0
Bookmark BibSonomy Mendeley Reddit Delicious
×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.