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Catalysis for Sustainable Energy

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2084-6819
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Composition of Surface Adsorbed Layer of TiO<sub>2</sub> Stored in Ambient Air

V.S. Zakharenko
  • Boreskov Institute of Catalysis, pr. Ak. Lavrentieva 5, Novosibirsk 630090, Russian Federation
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ M.N. Lyulyukin
  • Corresponding author
  • Boreskov Institute of Catalysis, pr. Ak. Lavrentieva 5, Novosibirsk 630090, Russian Federation
  • Email
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ D.V. Kozlov
Published Online: 2017-11-09 | DOI: https://doi.org/10.1515/cse-2017-0005

Abstract

The processes of dark, UV, and visible light promoted desorption of surface species were investigated for three different TiO2 samples: TiO2 prepared by dispersion of the titania single crystal, TiO2 prepared by combustion of a pyrotechnic mixture in air, and commercial TiO2 P25. The composition of the adsorbed layer was identified in the dark and under UV and visible light irradiation. The composition of desorption products showed the dependence of the adsorption layer state on the TiO2 nature. Methane photodesorption was detected only for the commercial TiO2 P25. Possible reasons for methane emission include the capturing of complete molecules during the TiO2 production process and photocatalytic hydrogenation of CO2 under UV-light.

Keywords: TiO2; CO2; methane; photodesorption; adsorbed layer

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About the article

Received: 2017-07-03

Accepted: 2017-10-13

Published Online: 2017-11-09

Published in Print: 2017-11-27


Citation Information: Catalysis for Sustainable Energy, Volume 4, Issue 1, Pages 25–30, ISSN (Online) 2084-6819, DOI: https://doi.org/10.1515/cse-2017-0005.

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© 2017. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License. BY-NC-ND 4.0

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