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学科主题物理化学
Surface Photocatalysis-TPD Spectrometer for Photochemical Kinetics
Ren, Ze-feng1; Guo, Qing1; Xu, Chen-biao1,2; Yang, Wen-shao1; Xiao, Chun-lei1; Dai, Dong-xu1; Yang, Xue-ming1; Yang XM(杨学明)
关键词Temperature Programmed Desorption Time Of Flight Spectrum Surface Photochemical Kinetics
刊名CHINESE JOURNAL OF CHEMICAL PHYSICS
2012-10-01
DOI10.1088/1674-0068/25/05/507-512
25期:5页:507-512
收录类别SCI
文章类型Article
部门归属11
项目归属1102
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
关键词[WOS]ULTRAHIGH-VACUUM ; DESORPTION ; WATER ; ADSORPTION ; TIO2(110) ; AG(111) ; DISSOCIATION ; CHEMISTRY ; HYDROGEN ; METHANOL
英文摘要A surface photocatalysis-TPD apparatus devoted to studying kinetics and mechanism of photocatalytic processes with various signal crystal surfaces has been constructed. Extremely high vacuum (similar to 0.2 nPa) in the ionization region is obtained by using multiple ultrahigh vacuum pumps. Compared with similar instruments built previously by others, the H-2, CH4 background in the ionization region can be reduced by about two orders of magnitude, and other residual gases in the ionization region can be reduced by about an order of magnitude. Therefore, the signal-to-noise ratio for the temperature programmed desorption (TPD) and time of flight (TOF) spectra is substantially enhanced, making experimental studies of photocatalytic processes on surfaces much easier. In this work, we describe the new apparatus in detail and present some preliminary studies on the photo-induced oxygen vacancy defects on TiO2(110) at 266 nm by using the TPD and TOF methods. Preliminary results suggest that the apparatus is a powerful tool for studying kinetics and mechanism of photochemical processes.
语种英语
WOS记录号WOS:000311582400001
引用统计
被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/117948
专题中国科学院大连化学物理研究所
通讯作者Yang XM(杨学明)
作者单位1.Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
2.Dalian Univ Technol, Sch Phys & Optoelect Technol, Dalian 116024, Peoples R China
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GB/T 7714
Ren, Ze-feng,Guo, Qing,Xu, Chen-biao,et al. Surface Photocatalysis-TPD Spectrometer for Photochemical Kinetics[J]. CHINESE JOURNAL OF CHEMICAL PHYSICS,2012,25(5):507-512.
APA Ren, Ze-feng.,Guo, Qing.,Xu, Chen-biao.,Yang, Wen-shao.,Xiao, Chun-lei.,...&杨学明.(2012).Surface Photocatalysis-TPD Spectrometer for Photochemical Kinetics.CHINESE JOURNAL OF CHEMICAL PHYSICS,25(5),507-512.
MLA Ren, Ze-feng,et al."Surface Photocatalysis-TPD Spectrometer for Photochemical Kinetics".CHINESE JOURNAL OF CHEMICAL PHYSICS 25.5(2012):507-512.
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