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

被引：35

作者：

Black, Ashley P. ^{[1
]}

Suzuki, Hajime ^{[2
]}

Higashi, Masanobu ^{[2
]}

Frontera, Carlos ^{[1
]}

Ritter, Clemens ^{[3
]}

De, Chandan ^{[4
,5
]}

Sundaresan, A. ^{[4
,5
]}

Abe, Ryu ^{[2
]}

Fuertes, Amparo ^{[1
]}

机构：

[1] Inst Ciencia Mat Barcelona ICMAB CSIC, Campus UAB, Bellaterra 08193, Spain

[2] Kyoto Univ, Dept Energy & Hydrocarbon Chem, Grad Sch Engn, Nishikyo Ku, Kyoto 6158510, Japan

[3] Inst Laue Langevin, 71,Ave Martyrs, F-38000 Grenoble, France

[4] Jawaharal Nehru Ctr Adv Sci Res, Chem & Phys Mat Unit, Int Ctr Mat Sci, Bangalore 560064, Karnataka, India

[5] Jawaharal Nehru Ctr Adv Sci Res, New Chem Unit, Int Ctr Mat Sci, Bangalore 560064, Karnataka, India

来源：

CHEMICAL COMMUNICATIONS | 2018年 / 54卷 / 12期

关键词：

VISIBLE-LIGHT IRRADIATION; DIELECTRIC-PROPERTIES; CRYSTAL-STRUCTURE; TAON PHOTOANODE; ANION ORDER; SYSTEM; SR; CA; DIFFRACTION; NITRIDE;

D O I：

10.1039/c7cc08965a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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 O-2 evolution.

引用

页码：1525 / 1528

页数：4

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