The Influence of Tin(II) Incorporation on Visible Light Absorption and Photocatalytic Activity in Defect-Pyrochlores

Morten Weiss; Thomas Bredow; Roland Marschall

doi:10.1002/chem.201803276

The Influence of Tin(II) Incorporation on Visible Light Absorption and Photocatalytic Activity in Defect-Pyrochlores

Chemistry. 2018 Dec 10;24(69):18535-18543. doi: 10.1002/chem.201803276. Epub 2018 Nov 19.

Authors

Morten Weiss¹, Thomas Bredow², Roland Marschall^{1

3}

Affiliations

¹ Institute of Physical Chemistry, Justus-Liebig-University Giessen, 35392, Giessen, Germany.
² Mulliken Center for Theoretical Chemistry, Institute of Physical and Theoretical Chemistry, Rheinische Friedrich-Wilhelms-University Bonn, 53115, Bonn, Germany.
³ Chair of Physical Chemistry III, University of Bayreuth, 95447, Bayreuth, Germany.

PMID: 30332500
DOI: 10.1002/chem.201803276

Abstract

The defect pyrochlore KTaWO₆ has been used to systematically investigate the effect of Sn^II incorporation conditions on the band structure and subsequent photocatalytic properties. Different tin precursors show varying influence on the resulting band gap. While the optimum conditions diminish the band gap by up to 1.4 eV, the increase in visible light absorption does not correlate with an increase of photocatalytic activity.

Keywords: hydrogen generation; light absorption; photocatalysis; tin incorporation.

Grants and funding

MA 5392/3-1/Deutsche Forschungsgemeinschaft