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CH3OH/TiO2(110)界面的光电子能谱研究
郝群庆,王志强,戴东旭,周传耀*,杨学明*
作者单位E-mail
郝群庆 中国科学院大连化学物理研究所分子反应动力学国家重点实验室, 大连 116023  
王志强 中国科学院大连化学物理研究所分子反应动力学国家重点实验室, 大连 116023;西安电子科技大学物理与光电工程学院, 西安 710071  
戴东旭 中国科学院大连化学物理研究所分子反应动力学国家重点实验室, 大连 116023  
周传耀* 中国科学院大连化学物理研究所分子反应动力学国家重点实验室, 大连 116023 chuanyaozhou@dicp.ac.cn 
杨学明* 中国科学院大连化学物理研究所分子反应动力学国家重点实验室, 大连 116023 xmyang@dicp.ac.cn 
摘要:
关键词:  
DOI:10.1063/1674-0068/30/cjcp1711219
分类号:
基金项目:This work was supported by the National Natural Science Foundation of China (No.21573225 and No.21703164), the Youth Innovation Promotion Association of CAS (No.2017224) and the Natural Science Foundation of Liaoning Province (No.2015020242).
Photoelectron Spectroscopic Study of Methanol Adsorbed Rutile TiO2(110) Surface
Qun-qing Hao,Zhi-qiang Wang,Dong-xu Dai,Chuan-yao Zhou*,Xue-ming Yang*
Abstract:
Methanol/TiO2(110) is a model system in the surface science study of photocatalysis where methanol is taken as a hole capture. However, the highest occupied molecular orbital of adsorbed methanol lies below the valence band maximum of TiO2, preventing the hole transfer. To study the level alignment of this system, electronic structure of methanol covered TiO2(110) surface has been measured by ultraviolet photoelectron spectroscopy and the molecular orbitals of adsorbed methanol have been clearly identified. The results indicate the weak interaction between methanol and TiO2 substrate. The static electronic structure also suggests the mismatch of the energy levels. These static experiments have been performed without band gap excitation which is the prerequisite of a photocatalytic process. Future study of the transient electronic structure using time-resolved UPS has also been discussed.
Key words:  Methanol  TiO2  Ultraviolet photoelectron spectroscopy  Level alignment