Improved quantum yield for photocatalytic hydrogen generation under visible light irradiation over eosin sensitized TiO2 -: Investigation of different noble metal loading

被引：115

作者：

Jin, Zhiliang ^{[1
]}

Zhang, Xiaojie ^{[1
]}

Lu, Gongxuan ^{[1
]}

Li, Shuben ^{[1
]}

机构：

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

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2006年 / 259卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

hydrogen evolution; visible light irradiation; dye-sensitized TiO2;

D O I：

10.1016/j.molcata.2006.06.035

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：

In the present study, visible light induced hydrogen generation (> 420 nm) over the dye-sensitized M/TiO2, (M = Pt, Ru and Rh) photocatalysts has been achieved in the presence of electron donors such as triethanolamine, acetonitrile and triethylamine. The significant enhancement of quantum yield was achieved via noble metal loading and subsequent dye sensitization of M/TiO2. The highest quantum yield for hydrogen generation was 10.27% under irradiation with a wavelength longer than 420nm. The strong adsorption of dye eosin has been found to enhance this high efficient hydrogen generation, which is supported by the comparsion results of dye eosin adsorption per square nanometer on noble metal loading TiO2, UV-vis adsorption spectra, activity tests and stability tests. In addition, improvement of adsorption of dye on the catalyst, for example, by multidentate co-ordination complexion, may result in higher photocatalytic efficiency of hydrogen generation under visible light illumination. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：275 / 280

页数：6

共 25 条

[1] Steady hydrogen evolution from water on Eosin Y-fixed TiO2 photocatalyst using a silane-coupling reagent under visible light irradiation [J].