Photoelectrocatalytic Activity of ZnO-Modified Hematite Films in the Reaction of Alcohol Degradation

Thin-film nanocrystalline hematite electrodes were fabricated by electrochemical deposition and loaded with electrodeposited zinc oxide in various amounts. Under visible light illumination, these electrodes demonstrate high activity in the photoelectrochemical degradation of methanol, ethylene glyco...

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Bibliographic Details
Published in:International journal of molecular sciences 2023-09, Vol.24 (18), p.14046
Main Authors: Grinberg, Vitali A, Emets, Victor V, Mayorova, Natalia A, Averin, Aleksey A, Shiryaev, Andrei A
Format: Article
Language:English
Subjects:
Alcohol
Aqueous solutions
Dielectric films
Efficiency
electrochemical deposition
Ethylene glycol
Glass substrates
Glycerin
Glycerol
Hematite
hematite photoanode
methanol
Oxidation
photoelectrocatalytic oxidation
Pollutants
Quantum dots
Raw materials
Thin films
Titanium
Zinc oxide
Zinc oxides
zincoxide
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Description
Summary:Thin-film nanocrystalline hematite electrodes were fabricated by electrochemical deposition and loaded with electrodeposited zinc oxide in various amounts. Under visible light illumination, these electrodes demonstrate high activity in the photoelectrochemical degradation of methanol, ethylene glycol and, in particular, glycerol. Results of intensity-modulated photocurrent spectroscopy show that the photoelectrocatalysis efficiency is explained by the suppression of the electron–hole pair recombination and an increase in the rate of photo-induced charge transfer. Thus, zinc oxide can be considered an effective modifying additive for hematite photoanodes.
ISSN:1422-0067
1661-6596
1422-0067
DOI:10.3390/ijms241814046