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

Ashley P. Black, Hajime Suzuki, Masanobu Higashi, Carlos Frontera, Clemens Ritter, Chandan De, A. Sundaresan, Ryu Abe, Amparo Fuertes

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    20 Cites (Scopus)

    Resum

    © 2018 The Royal Society of Chemistry. 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.
    Idioma originalEnglish
    Pàgines (de-a)1525-1528
    RevistaChemical Communications
    Volum54
    Número d'incidència12
    DOIs
    Estat de la publicacióPublicada - 1 de gen. 2018

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