Issue 3, 2021

Highly crystalline Na0.5Bi0.5TiO3 of a photocatalyst valence-band-controlled with Bi(iii) for solar water splitting

Abstract

Na0.5Bi0.5TiO3 (BG 3.1 eV) with a valence band formed by Bi(III) was found as a new photocatalyst for solar water splitting. The water splitting activity of highly crystalline Na0.5Bi0.5TiO3 synthesized by a flux method was much higher than that of the samples synthesized by a solid-state reaction. The optimized RhCr2Ox(0.1 mol%)/Na0.5Bi0.5TiO3/CoOOH(0.02 mol%) gave a 5.1% apparent quantum yield at 350 nm and split water even under simulated sunlight irradiation with a 0.05% solar to hydrogen energy conversion efficiency. We have successfully achieved solar water splitting using a one-step photoexcitation type photocatalyst valence-band-controlled with Bi(III).

Graphical abstract: Highly crystalline Na0.5Bi0.5TiO3 of a photocatalyst valence-band-controlled with Bi(iii) for solar water splitting

Supplementary files

Article information

Article type
Communication
Submitted
09 Nov 2020
Accepted
07 Dec 2020
First published
08 Dec 2020
This article is Open Access
Creative Commons BY-NC license

Chem. Commun., 2021,57, 323-326

Highly crystalline Na0.5Bi0.5TiO3 of a photocatalyst valence-band-controlled with Bi(III) for solar water splitting

K. Watanabe, Y. Iikubo, Y. Yamaguchi and A. Kudo, Chem. Commun., 2021, 57, 323 DOI: 10.1039/D0CC07371G

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