Pulsed Plasma-Chemical Modification of SiO2Nanopowder by Zn xO yNanoparticles

Roman Sazonov, Galina Kholodnaya, Denis Ponomarev, Mikhail Zhuravlev, Igor Pyatkov, Fedor Konusov, Olga Lapteva, Ruslan Gadirov

Research output: Contribution to journalArticlepeer-review

Abstract

This work presents the results of pulsed plasma-chemical modification of silicon dioxide nanopowder with zinc oxide nanoparticles (ZnO@SiO2). The obtained ZnO@SiO2 powders were characterized by transmission electron microscopy (TEM) and X-ray phase analysis. The size of the synthesized particles was in the range of 20-100nm. The photocatalytic characteristics of ZnO@SiO2 were studied. When exposed to ultraviolet radiation, the methylene blue (MB) decomposes efficiently. Two samples characterized by the content of silicon tetrachloride in the initial mixture were synthesized. The band gap estimated from the absorption spectra calculated from the diffuse reflectance spectra for these samples was 2.4eV and 2.95eV for indirect transitions and 3.03eV and 3.24eV for direct allowed transitions.

Original languageEnglish
Article number2150005
JournalInternational Journal of Nanoscience
DOIs
Publication statusAccepted/In press - 2020

Keywords

  • Electron beam pulsed plasma-chemical method
  • electrospark method
  • photocatalyst
  • silicon oxide
  • zinc oxide

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Materials Science(all)
  • Condensed Matter Physics
  • Computer Science Applications
  • Electrical and Electronic Engineering

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