Characterization of the Excited State on Methanol/TiO2(110) Interface

	Characterization of the Excited State on Methanol/TiO2(110) Interface
	Wang, Zhi-qiang 1; Hao, Qun-qing 1; Mao, Xin-chun 1; Zhou, Chuan-yao 1; Ma, Zhi-bo 1; Ren, Ze-feng 2,3,4; Dai, Dong-xu 1; Yang, Xue-ming 1
刊名	chinese journal of chemical physics
	2015-04-01
卷号	28 期号:2 页码:123-127
关键词	Titanium dioxide Excited states Two-photon photoemission Time-resolved
英文摘要	the electronic structure of methanol/tio2(110) interface has been studied by photoeraission spectroscopy. the pronounced resonance which appears at 5.5 ev above the fermi level in two-photon photoemission spectroscopy (2ppe) is associated with the photocatalyzed dissociation of methanol at fivefold coordinated ti sites (ti-5c) on tio2(110) surface [chemical science 1, 575 (2010)]. to check whether this resonance signal arises from initial or intermediate states, photon energy dependent 2ppe and comparison between one-photon photoemission spectroscopy and 2ppe have been performed. both results consistently suggest the resonance signal originates from the initially unoccupied intermediate states, i.e., excited states. dispersion measurements suggest the excited state is localized. time-resolved studies show the lifetime of the excited state is 24 fs. this work presents comprehensive characterization of the excited states on methanol/tio2(110) interface, and provides elaborate experimental data for the development of theoretical methods in reproducing the excited states on tio2 surfaces and interfaces.
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]	semiconductor photocatalysis ; titanium-dioxide ; inverse-photoemission ; electron dynamics ; tio2(110) surface ; water ; spectroscopy ; methanol ; tio2
收录类别	SCI
语种	英语
WOS记录号	WOS:000354757300001
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/146239]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China 2.Peking Univ, Int Ctr Quantum Mat, Beijing 100871, Peoples R China 3.Peking Univ, Sch Phys, Beijing 100871, Peoples R China 4.Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Wang, Zhi-qiang,Hao, Qun-qing,Mao, Xin-chun,et al. Characterization of the Excited State on Methanol/TiO2(110) Interface[J]. chinese journal of chemical physics,2015,28(2):123-127.
APA	Wang, Zhi-qiang.,Hao, Qun-qing.,Mao, Xin-chun.,Zhou, Chuan-yao.,Ma, Zhi-bo.,...&Yang, Xue-ming.(2015).Characterization of the Excited State on Methanol/TiO2(110) Interface.chinese journal of chemical physics,28(2),123-127.
MLA	Wang, Zhi-qiang,et al."Characterization of the Excited State on Methanol/TiO2(110) Interface".chinese journal of chemical physics 28.2(2015):123-127.