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

Author(s) Black, A.P.; Suzuki, H.; Higashi, M.; Frontera, C.; Ritter, C.; De, C.; Sundaresan, A.; Abe, R.; Fuertes, A.
Journal Chem Commun (Camb)
Date Published 2018 Feb 06
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.

DOI 10.1039/c7cc08965a
ISSN 1364-548X
Citation Black AP, Suzuki H, Higashi M, Frontera C, Ritter C, De C, et al. New rare earth hafnium oxynitride perovskites with photocatalytic activity in water oxidation and reduction. Chem Commun (Camb). 2018;54(12):1525-1528.

Related Applications, Forms & Industries