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Issue 12, 2018
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New rare earth hafnium oxynitride perovskites with photocatalytic activity in water oxidation and reduction

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Abstract

RHfO2N perovskites with R = La, Nd and Sm show a GdFeO3-type structure and are semiconductors with band gaps of 3.35, 3.40 and 2.85 eV and relative dielectric constants of 30, 16 and 28 respectively. These compounds have adequate reduction and oxidation potentials to conduct the overall water splitting reaction, and the analogous perovskite LaZrO2N with a band gap of 2.8 eV shows photocatalytic activity under visible light irradiation for O2 evolution.

Graphical abstract: New rare earth hafnium oxynitride perovskites with photocatalytic activity in water oxidation and reduction

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Supplementary files

Article information


Submitted
21 Nov 2017
Accepted
17 Jan 2018
First published
17 Jan 2018

Chem. Commun., 2018,54, 1525-1528
Article type
Communication

New rare earth hafnium oxynitride perovskites with photocatalytic activity in water oxidation and reduction

A. P. Black, H. Suzuki, M. Higashi, C. Frontera, C. Ritter, C. De, A. Sundaresan, R. Abe and A. Fuertes, Chem. Commun., 2018, 54, 1525
DOI: 10.1039/C7CC08965A

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