The influence of oxygen concentration on the formation of CuO and Cu2O crystalline phases during the synthesis in the plasma of low pressure arc discharge

Тип публикации: статья из журнала

Год издания: 2016

Идентификатор DOI: 10.1016/j.vacuum.2016.03.025

Ключевые слова: Oxides, Vapor deposition, X-ray diffraction, Transmission electron microscopy (TEM), Catalytic properties, Catalytic properties, Oxides, Transmission electron microscopy (TEM), Vapor deposition, X-ray diffraction, Azo dyes, Crystalline materials, Electric discharges, Electron microscopy, Energy dispersive spectroscopy, Fourier transform infrared spectroscopy, Gas mixtures, Gases, Oxides, Oxygen, Particle size, Protactinium, Synthesis (chemical), Transmission electron microscopy, Vapor deposition, X ray diffraction, X ray spectroscopy, Average particle size, Catalytic properties, Copper oxide nanoparticles, Energy dispersive X ray spectroscopy, Evaporation-condensation, Influence of oxygen, Photocatalytic property, Plasma-chemical process, High resolution transmission electron microscopy

Аннотация: This paper describes the synthesis of copper oxide nanoparticles with different percentages of CuO and Cu2O phases. It was achieved by the control of the percentage of oxygen in the gas mixture (N-2 + O-2) in a plasma-chemical process of evaporation-condensation by means of low-pressure arc discharge. In all the experiments, the pressure in the plasma-chemical reactor remained constant at 60 Pa. By means of X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM), energy-dispersive X-ray spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR) it was found that the average particle size was 6 nm, and Cu2O phase content decreases with increasing oxygen content in the gas mixture. High photocatalytic properties of Cu2O powder were shown by the example of the reaction of the methyl orange dye decomposition in water solution. The problems, associated with the performance of this method and the formation of crystalline phases, are discussed. (C) 2016 Elsevier Ltd. All rights reserved.

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Издание

Журнал: VACUUM

Выпуск журнала: Vol. 128

Номера страниц: 123-127

ISSN журнала: 0042207X

Место издания: OXFORD

Издатель: PERGAMON-ELSEVIER SCIENCE LTD

Авторы

  • Uschakov A.V. (Reshetnev Siberian State Aerospace University)
  • Karpov I.V. (Reshetnev Siberian State Aerospace University)
  • Lepeshev A.A. (Krasnoyarsk Scientific Center of the Siberian Branch of the Russian Academy of Science)
  • Zharkov S.M. (Kirensky Institute of Physics,Russian Academy of Sciences)

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