Development of visible-light-responsive Ru-doped KTaO3 photocatalyst for overall water splitting with one-step photoexcitation and the effects of codoping with La

Akihide Iwase; Miyu Kasahara; Haruka Misono

doi:10.1039/D3TA03392A

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Development of visible-light-responsive Ru-doped KTaO₃ photocatalyst for overall water splitting with one-step photoexcitation and the effects of codoping with La†

Akihide Iwase,

*^a Miyu Kasahara^a and Haruka Misono^a

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* Corresponding authors

^a Department of Applied Chemistry, School of Science and Technology, Meiji University, Kanagawa 214-8571, Japan
E-mail: a_iwase@meiji.ac.jp

Abstract

Ru-doped KTaO₃ prepared by a conventional solid–state reaction is found as an active photocatalyst for overall water splitting into H₂ and O₂ under visible light irradiation when a Rh-core/Cr₂O₃-shell cocatalyst is loaded. The water splitting activity is improved by codoping with a suitable amount of La. The optimized Ru and La-codoped KTaO₃ splits water into H₂ and O₂ using visible light up to 540 nm with an apparent quantum yield of 0.03% at 420 nm.

This article is part of the themed collection: Journal of Materials Chemistry A HOT Papers

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Article information

DOI: https://doi.org/10.1039/D3TA03392A
Article type: Paper
Submitted: 08 Jun 2023
Accepted: 25 Sep 2023
First published: 26 Sep 2023

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J. Mater. Chem. A, 2023,11, 22161-22166

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Development of visible-light-responsive Ru-doped KTaO₃ photocatalyst for overall water splitting with one-step photoexcitation and the effects of codoping with La

A. Iwase, M. Kasahara and H. Misono, J. Mater. Chem. A, 2023, 11, 22161 DOI: 10.1039/D3TA03392A

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Journal of Materials Chemistry A