Eosin Y/Pt/SiO2催化剂光催化还原水制氢

doi:10.3866/PKU.WHXB20110511

物理化学学报 >> 2011, Vol. 27 >> Issue (05): 1143-1148.doi: 10.3866/PKU.WHXB20110511

Eosin Y/Pt/SiO₂催化剂光催化还原水制氢

张晓杰^1,2, 汤长青², 靳治良¹, 吕功煊¹, 李树本¹

1. 中国科学院兰州化学物理研究所, 羰基合成与选择氧化国家重点实验室, 兰州 730000;
2. 济源职业技术学院冶金化工系, 河南济源 454650

收稿日期:2010-12-13 修回日期:2011-03-06 发布日期:2011-04-28
通讯作者: 吕功煊 E-mail:gxlu@lzb.ac.cn
基金资助:
国家重点基础研究发展规划 (973)(2007CB613305, 2009CB220003)资助项目

Photocatalytic Reduction of Water to Hydrogen over Eosin Y/Pt/SiO₂ Catalysts

ZHANG Xiao-Jie^1,2, TANG Chang-Qing², JIN Zhi-Liang¹, LV Gong-Xuan¹, LI Shu-Ben¹

1. State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China;
2Department of Metallurgical and Chemical Engineering, Jiyuan Vocational and Technical Collage, Jiyuan, 454650, Henan Province, P. R. China

Received:2010-12-13 Revised:2011-03-06 Published:2011-04-28
Contact: LV Gong-Xuan E-mail:gxlu@lzb.ac.cn
Supported by:
The project was supported by the National Key Basic Research Program of China (973) (2007CB613305, 2009CB220003).

摘要/Abstract

摘要：

构建了具有较高可见光还原水制氢性能的Eosin Y/Pt/SiO₂催化体系, 详细考察了二氧化硅性质、曙红Y与二氧化硅的混合方式以及光照强度等因素对光敏化催化剂制氢性能的影响. 实验结果表明: 二氧化硅的比表面积增大, 析氢速率随之提高; 光照强度过高或过低都不利于提高光量子效率; 与曙红Y浸渍法吸附在二氧化硅表面制备的催化剂相比, 原位物理混合制备的催化剂光敏化析氢速率和稳定性均有显著提高.

关键词: 曙红Y, 光敏化析氢, 二氧化硅, 可见光

Abstract:

A novel efficient photoscatalytic system Eosin Y/Pt/SiO₂ for photocatalytic reduction of water to hydrogen under visible light irradiation was constructed. The effects of parameters, such as the surface physical property of SiO₂ (i.e., specific surface area), method of mixing Eosin Y and SiO₂, and light intensity on catalyst properties for hydrogen evolution were investigated systemically. With increase of SiO₂ specific surface area, the rate of hydrogen evolution increased. Either over high or low intensive irradiation is detrimental to obtain high quantum efficiency for hydrogen evolution. Compared to the Eosin Y adsorbed on SiO₂ by an impregnation method, the composite system in which Eosin Y mixed with SiO₂ physically in situ displayed higher rate and superior stability of hydrogen evolution.

Key words: Eosin Y, Photosensitized hydrogen evolution, Silicon dioxide, Visible light

MSC2000:

O643

张晓杰, 汤长青, 靳治良, 吕功煊, 李树本. Eosin Y/Pt/SiO₂催化剂光催化还原水制氢[J]. 物理化学学报, 2011, 27(05): 1143-1148.

ZHANG Xiao-Jie, TANG Chang-Qing, JIN Zhi-Liang, LV Gong-Xuan, LI Shu-Ben. Photocatalytic Reduction of Water to Hydrogen over Eosin Y/Pt/SiO₂ Catalysts[J]. Acta Phys. -Chim. Sin., 2011, 27(05): 1143-1148.

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Eosin Y/Pt/SiO₂催化剂光催化还原水制氢

Photocatalytic Reduction of Water to Hydrogen over Eosin Y/Pt/SiO₂ Catalysts

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