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RAS Chemistry & Material ScienceЖурнал неорганической химии Russian Journal of Inorganic Chemistry

  • ISSN (Print) 0044-457X
  • ISSN (Online) 3034-560X

Hydrothermal Synthesis and Photocatalytic Properties of Cobalt-Doped Tungsten Oxide

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PII
10.31857/S0044457X22602127-1
DOI
10.31857/S0044457X22602127
Publication type
Status
Published
Authors
G. S. Zakharova
  • Affiliation: Postovsky Institute of Organic Synthesis, Ural Branch, Russian Academy of Sciences
Volume/ Edition
Volume 68 / Issue number 4
Pages
435-443
Abstract
Hexagonal tungsten trioxide–base interstitial solid solutions of general formula CoxWO3, where 0.01 ≤ x ≤ 0.09, were prepared hydrothermally. The dopant homogeneity extent was found to depend on рН in the working solution. Interstitial solid solutions with the highest Co2+ concentrations were formed at рН of 2.3. The CoxWO3 samples with a fiber-like morphology with a fiber diameter of ca. 40 nm, which were prepared at рН of 2.3, had the highest specific surface area, equal to 38.6 m2/g. The key parameter for the stability of the CoxWO3 crystal structure appeared to be ammonium ions residing in the hexagonal channels of the crystal structure. When tested as photocatalysts of 1,2,4-trichlorobenzene oxidation under the UV light, the prepared samples showed high chloroarene conversions and low selectivities to yield a wide range of organic compounds, including chlorine-free ones.
Keywords
оксид вольфрама допирование кобальт гидротермальный синтез фотокатализ
Date of publication
01.04.2023
Year of publication
2023
Number of purchasers
0
Views
36

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