PHOTOCATALYTIC DECOMPOSITION OF WATER OVER A NI-LOADED RB4NB6O17 CATALYST

被引：80

作者：

SAYAMA, K

TANAKA, A

DOMEN, K

MARUYA, K

ONISHI, T

机构：

[1] TOKYO INST TECHNOL,RESOURCES UTILIZAT RES LAB,4259 NAGATSUTA,YOKOHAMA 227,JAPAN

[2] NIKON CO,SAGAMIHARA 228,JAPAN

来源：

JOURNAL OF CATALYSIS | 1990年 / 124卷 / 02期

关键词：

D O I：

10.1016/0021-9517(90)90200-4

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：

Nickel-loaded Rb4Nb6O17, which has the same layered structure of niobium oxide sheets with interlayers as that of K4Nb6O17, exhibits a high activity for photocatalytic water splitting to form H2 and O2 under band gap irradiation. In order to obtain an efficient catalyst, it was essential to treat the Rb4Nb6O17 powder before nickel-loading by washing the Rb4Nb6O17 with deionized water and then recalcining this powder in air in the temperature range 1153-1173 K for more than 10 h. The maximum activity was obtained when the reaction was carried out in distilled water where the pH was ca. 9.7 and the quantum efficiency at 330 nm was ca. 10% at the initial stage of the reaction over NiO(0.1 wt%)-Rb4Nb6O17. © 1990.

引用

页码：541 / 547

页数：7

共 14 条

[1] PHOTODECOMPOSITION OF WATER AND HYDROGEN EVOLUTION FROM AQUEOUS METHANOL SOLUTION OVER NOVEL NIOBATE PHOTOCATALYSTS [J].