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题名: Kinetics of photogenerated electrons involved in photocatalytic reaction of methanol on Pt/TiO2
作者: Chen, Tao;  Wu, Guo-Peng;  Feng, Zhao-Chi;  Shi, Tan-Ying;  Ma, Gui-Jun;  Ying, Pin-Liang;  Li, Can
通讯作者: 李灿
关键词: methanol photocatalytic reaction ;  time-resolved IR ;  Pt/TiO2 photocatalyst ;  photogenerated electron ;  decay kinetic
刊名: CHINESE JOURNAL OF CHEMICAL PHYSICS
发表日期: 2007-08-27
DOI: 10.1088/1674-0068/20/04/483-488
卷: 20, 期:4, 页:483-488
收录类别: SCI
文章类型: Article
部门归属: 5
项目归属: 503
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Physics, Atomic, Molecular & Chemical
研究领域[WOS]: Physics
英文摘要: Time-resolved IR spectroscopy was used to detect the photocatalytic reaction of methanol for H-2 production on Pt/TiO2 catalysts. There exists an optimal amount of Pt loading in the Pt/TiO2 catalysts for the reaction of the photogenerated long-lived electrons. For a given amount of Pt loading, the reaction rate of the long-lived electrons on Pt/TiO2 catalysts varies greatly with the different reduction temperature of the catalysts. The possible reason is that the Pt particles occupy the surface active sites for methanol adsorption on Pt/TiO2 catalysts reduced at high temperature. This phenomenon is not observed obviously on Pt/TiO2 catalysts reduced at low temperature. The decay rate of the long-lived electrons evaluated by time-resolved IR method qualitatively correlates well with the activity of H-2 production under steady-state irradiation conditions.
关键词[WOS]: INFRARED-ABSORPTION SPECTROSCOPY ;  DIFFUSE-REFLECTANCE SPECTROSCOPY ;  TIO2 PARTICLES ;  HYDROGEN-PRODUCTION ;  CHARGE SEPARATION ;  CARRIER DYNAMICS ;  WATER ;  OXIDATION ;  LIGHT ;  IR
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000249465100024
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/99641
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Chen, Tao,Wu, Guo-Peng,Feng, Zhao-Chi,et al. Kinetics of photogenerated electrons involved in photocatalytic reaction of methanol on Pt/TiO2[J]. CHINESE JOURNAL OF CHEMICAL PHYSICS,2007,20(4):483-488.
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