Photocatalytic Water Oxidation by a Pyrochlore Oxide upon Irradiation with Visible Light: Rhodium Substitution Into Yttrium Titanate



Kiss, Borbala, Didier, Christophe, Johnson, Timothy, Manning, Troy D ORCID: 0000-0002-7624-4306, Dyer, Matthew S ORCID: 0000-0002-4923-3003, Cowan, Alexander J ORCID: 0000-0001-9032-3548, Claridge, John B ORCID: 0000-0003-4849-6714, Darwent, James R and Rosseinsky, Matthew J ORCID: 0000-0002-1910-2483
(2014) Photocatalytic Water Oxidation by a Pyrochlore Oxide upon Irradiation with Visible Light: Rhodium Substitution Into Yttrium Titanate. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 53 (52). pp. 14480-14484.

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Abstract

A stable visible-light-driven photocatalyst (λ≥450 nm) for water oxidation is reported. Rhodium substitution into the pyrochlore Y2 Ti2 O7 is demonstrated by monitoring Vegard's law evolution of the unit-cell parameters with changing rhodium content, to a maximum content of 3 % dopant. Substitution renders the solid solutions visible-light active. The overall rate of oxygen evolution is comparable to WO3 but with superior light-harvesting and surface-area-normalized turnover rates, making Y2 Ti1.94 Rh0.06 O7 an excellent candidate for use in a Z-scheme water-splitting system.

Item Type: Article
Uncontrolled Keywords: photocatalysis, pyrochlore, rhodium, titanates, water splitting
Depositing User: Symplectic Admin
Date Deposited: 20 Mar 2017 07:26
Last Modified: 19 Jan 2023 07:09
DOI: 10.1002/anie.201407179
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3006505