Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials
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Sorption and photocatalytic activity of Zn1-xCuxO (x = 0,05 and 0,15) to As(III) in an alkaline medium

O.I. Gyrdasova, L.A. Pasechnik, V.N. Krasil'nikov, V.T. Surikov, M.V. Kuznetsov

The Institute of Solid State Chemistry of the Ural Branch of RAS

DOI: 10.26456/pcascnn/2020.12.792

Original article

Abstract: 1D solid solutions Zn1-xCuxO and composites Zn1-xCuxO / CuO with spherical morphology of aggregates from formate glycolate complexes Zn1-xCux (HCOO)(OCH2CH2O)1/2 (0 ≤ x ≤ 0,15)  were obtained. All materials have been tested in the reaction of As(III) photooxidation upon exposure to ultraviolet and visible radiation.  It was found that copper is an effective doping impurity in the composition of the solid solution Zn1-xCuxO (0 ≤ x ≤ 0,1). Its presence in the shell of the Zn1-xCuxO / CuO composite negatively affects the photoactivity of the material up to suppression of photocatalysis in the visible light range. The sorption efficiency of materials for arsenic is also shown, regardless of the composition and morphology of the material. According to x-ray photoelectron spectroscopy data, the surface of the samples after sorption contains arsenic mainly in the form of As(III).

Keywords: zinc oxide, nanoheterostructures, synthesis, precursors, morphology, microstructure, defective structure, dynamics of electronic excitations, photocatalysts

  • Olga I. Gyrdasova – Ph. D., Leading Researcher, Laboratory of Inorganic Synthesis, The Institute of Solid State Chemistry of the Ural Branch of RAS
  • Liliya A. Pasechnik – Ph. D., Leading Researcher, Laboratory of Heterogeneous Processes, The Institute of Solid State Chemistry of the Ural Branch of RAS
  • Vladimir N. Krasil'nikov – Dr. Sc., Professor, Chief Researcher, Laboratory of Inorganic Synthesis, The Institute of Solid State Chemistry of the Ural Branch of RAS
  • Vladimir T. Surikov – Researcher, Laboratory of Physico-chemical Analytical Methods, The Institute of Solid State Chemistry of the Ural Branch of RAS
  • Mikhail V. Kuznetsov – Dr. Sc., Professor, Head of the Laboratory of Quantum Chemistry and Spectroscopy named after prof. A.L. Ivanovskii, The Institute of Solid State Chemistry of the Ural Branch of RAS

Reference:

Gyrdasova, O.I. Sorption and photocatalytic activity of Zn1-xCuxO (x = 0,05 and 0,15) to As(III) in an alkaline medium / O.I. Gyrdasova, L.A. Pasechnik, V.N. Krasil'nikov, V.T. Surikov, M.V. Kuznetsov // Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials. – Tver: TSU, 2020. — I. 12. — P. 792-804. DOI: 10.26456/pcascnn/2020.12.792. (In Russian).

Full article (in Russian): download PDF file

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