Photoreactions on LaTiO2N under visible light irradiation

被引：428

作者：

Kasahara, A

Nukumizu, K

Hitoki, G

Takata, T

Kondo, JN

Hara, M

Kobayashi, H

Domen, K

机构：

[1] Tokyo Inst Technol, Chem Resources Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan

[2] Kurashiki Univ Sci Arts, Kurashiki, Okayama 7128505, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY A | 2002年 / 106卷 / 29期

关键词：

D O I：

10.1021/jp025961+

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Photochemical reactions on LaTiO2N, a perovskite-type oxynitride, were examined, Under visible-light irradiation (420 nm < lambda < 600 nm), LaTiO2N reduced H+ into H-2 and oxidized H2O into O-2 in the presence of a sacrificial electron donor (methanol) or acceptor (Ag+) by the band gap transition (2.1 eV). Oxidation of water proceeded with little degradation of the oxynitride, whereas partial substitution of Ca2+ for La3+ of LaTiO2N and modification by IrO2 colloid markedly suppressed degradation of the oxynitride and increased O-2 evolution efficiency.

引用

页码：6750 / 6753

页数：4

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