Characterisation of oxygen defects and nitrogen impurities in TiO2 photocatalysts using variable-temperature X-ray powder diffraction

Christopher Foo; Yiyang Li; Konstantin Lebedev; Tianyi Chen; Sarah Day; Chiu Tang; Shik Chi Edman Tsang

doi:10.1038/s41467-021-20977-z

Nature Communications (Jan 2021)

Characterisation of oxygen defects and nitrogen impurities in TiO2 photocatalysts using variable-temperature X-ray powder diffraction

Christopher Foo,
Yiyang Li,
Konstantin Lebedev,
Tianyi Chen,
Sarah Day,
Chiu Tang,
Shik Chi Edman Tsang

Affiliations

Christopher Foo: Wolfson Catalysis Centre, Department of Chemistry University of Oxford
Yiyang Li: Wolfson Catalysis Centre, Department of Chemistry University of Oxford
Konstantin Lebedev: Wolfson Catalysis Centre, Department of Chemistry University of Oxford
Tianyi Chen: Wolfson Catalysis Centre, Department of Chemistry University of Oxford
Sarah Day: Diamond Light Source
Chiu Tang: Diamond Light Source
Shik Chi Edman Tsang: Wolfson Catalysis Centre, Department of Chemistry University of Oxford

DOI: https://doi.org/10.1038/s41467-021-20977-z
Journal volume & issue: Vol. 12, no. 1
pp. 1 – 13

Abstract

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Nitrogen-doped TiO2 exhibits improved photocatalytic water-splitting activity partially due to enhanced oxygen vacancy formation. Here, authors demonstrate the temperature-dependent lattice distortion of oxygen vacancies, and identify the presence of a titanium oxynitride phase in high activity catalysts.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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