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Gyrdasova, O. I., Krasil’nikov, V. N., & Sycheva, N. S. (2020). Copper-doped quasi-one-dimensional ZnO for effective photooxidation of As (III) to As (V) in visible light. KnE Materials Science, 6(1), 253–259. https://doi.org/10.18502/kms.v6i1.8082

https://doi.org/10.18502/kms.v6i1.8082

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authors

  • Olga I. Gyrdasova

    Olga I. Gyrdasova

    Institute of Solid State Chemistry of the Ural Branch of the Russian Academy of Sciences, 620990 Ekaterinburg, Russian Federation
  • Vladimir N. Krasil’nikov

    Vladimir N. Krasil’nikov

    Institute of Solid State Chemistry of the Ural Branch of the Russian Academy of Sciences, 620990 Ekaterinburg, Russian Federation
  • Natalya S. Sycheva

    Natalya S. Sycheva

    Institute of Solid State Chemistry of the Ural Branch of the Russian Academy of Sciences, 620990 Ekaterinburg, Russian Federation

Published Date

  • Dec 31, 2020

Copper-doped quasi-one-dimensional ZnO for effective photooxidation of As (III) to As (V) in visible light

KnE Materials Science / IV Congress “Fundamental Research and Applied Developing of Recycling and Utilization Processes of Technogenic Formations” Volume 2020 / Pages 253–259

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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