Photo-catalytic H2 evolution over a series of Keggin-structure heteropoly blue sensitized Pt/TiO2 under visible light irradiation

被引：42

作者：

Fu, Ning ^{[1
,2
]}

Lu, Gongxuan ^{[1
]}

机构：

[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2009年 / 255卷 / 08期

关键词：

Heteropoly blue (HPB); Visible light; Sensitization; TiO2; PHOTOSYNTHETIC REACTION-CENTER; PHOTOCATALYTIC DECOMPOSITION; HYDROGEN EVOLUTION; ORGANIC-COMPOUNDS; WATER; REDUCTION; TIO2; SEMICONDUCTOR; ACID; OXIDATION;

D O I：

10.1016/j.apsusc.2008.11.056

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：

We report the visible light-induced hydrogen generation over a series of Keggin-structure heteropoly blue (HPB) anions (PW12O403), phosphotungstic blue (PTB), GeW12O404 (GTB), SiW12O404 (STB), BW12O405 (BTB)) sensitized Pt/TiO2 photo-catalysts. The sensitization of TiO2 by HPB was certified using photo-electrochemical measurements and UV-vis absorption spectra. PTB showed the most pronounced sensitization effect for TiO2 in those HPB anions and Pt/TiO2-PTB showed the highest hydrogen generation activity. The sensitization of TiO2 was significantly dependent on the reduction potential of HPA, which was determined by the kind of central atom in HPA. (C) 2008 Elsevier B. V. All rights reserved.

引用

页码：4378 / 4383

页数：6

共 40 条

[1] Efficient hydrogen evolution from aqueous mixture of I- and acetonitrile using a merocyanine dye-sensitized Pt/TiO2 photocatalyst under visible light irradiation [J].