KnE Materials Science
ISSN: 2519-1438
The latest conference proceedings on physical materials, energy materials, electrical materials.
Copper-doped quasi-one-dimensional ZnO for effective photooxidation of As (III) to As (V) in visible light
Published date: Dec 31 2020
Journal Title: KnE Materials Science
Issue title: IV Congress “Fundamental Research and Applied Developing of Recycling and Utilization Processes of Technogenic Formations” Volume 2020
Pages: 253–259
Authors:
Abstract:
By temolysis of the Zn1− Cu (HCOO)(OCH2CH2O)1/2 complexes in one step Zn1− Cu O solid solutions were obtained. Сopper in these materials is a regulator of the photoactivity and morphology of aggregates. According to TEM, XPS, optical spectroscopy, and voltammetry, all samples studied contain monovalent copper. It was shown that the maximum photoactivity in the reactions of photooxidation of As in UV and blue light has Zn1− Cu O (0<x<0.1) solid solutions with tubular particle morphology. With an increase in concentration up to 10 at.%, сopper manifests itself as an electron acceptor, which reduces the efficiency of the catalyst in both light ranges.
Keywords: photocatalyst, Cu-doped ZnO, heterostructures, wide-band-gap semiconductors, precursor synthesis
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