Dioxygen evolution induced by visible light at layered sensitizer water oxidation catalyst

被引：9
|
作者：
Yagi, M
Takahashi, Y
Ogino, I
Kaneko, M
机构：
[1] NIIGATA UNIV, FAC EDUC, NIIGATA 95021, JAPAN
[2] RIKEN, WAKO, SAITAMA 35101, JAPAN
来源：
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1997年 / 93卷 / 17期
关键词：
D O I：
10.1039/a702661g
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：
Photoelectrocatalytic water oxidation was investigated using a multilayer-modified electrode composed of a Nafion (Nf)) membrane incorporating tris(2,2'-bipyridine)ruthenium(II) ([Ru(bpy)(3)](2+)) sensitizer and an electrodeposited platinum black (Pt-black) adsorbing trinuclear ruthenium complex (Ru-red) ([(NH3)(5)Ru(mu-O)Ru (NH3)(4)(mu-O)Ru(NH3)(5)](6+)) as a water oxidation catalyst. In this multilayered indium tin oxide (ITO)/Nf [Ru(bpy)(3)(2+)]/Pt-black[Ru-red] system, an anodic photocurrent was generated induced by photoexcitation of [Ru(bpy)(3)](2+). This anodic photocurrent was much higher than that generated without Ru-red. Dioxygen evolution was also induced by visible light at anodic applied potentials, which was ascribed to rapid transfer of positive charge from [Ru(bpy)(3)](3+) to Ru-red where water oxidation takes place.
引用
收藏
页码：3125 / 3127
页数：3
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