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学科主题: 物理化学
题名: Photoinduce Chemistry of Methanol on Stoichiometric TiO2(110) Surface
作者: Yang XM(杨学明)
会议名称: The 6th Joint Meeting of Chinese Physisists Worldwide
会议日期: 2009-8-3
出版日期: 2009-08-03
会议地点: 中国
通讯作者: 杨学明
部门归属: 十一室
主办者: 兰州大学
摘要: We report direct evidence of methanol photodissociation on stoichiometric TiO2(110) detected by time-resolved two-photon photoemission (2PP) spectroscopy. The rise of an excited resonance in the 2PP spectra on thd CD3OD/TiO2(110) surface as a unction of laser illumination time strongly suggests that the observed excited resonance is photoinduced by the 400 nm laser. The appearance rate of the excited resonance is strongly dependent on the laser power. A large isotope effect on the appearance rate of the excited resonance has also been observed. Based on these experimental results along with results of previous experimental and theoretical studies, we believe that the excited resonance observed in the 2PP spectra is possibly due to methanol photodissociation on the TiO2(110) surface in which the hydroxyl hydrogen on methanol is transferred from the methanol oxygen atom, which is bonded to the Ti4+ sites, to thd nearby bridge bonded oxygen (BBO) site. The kinetics of the photoinduced chemistry of methanol appears to fractal-like.
语种: 中文
内容类型: 会议论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/113984
Appears in Collections:中国科学院大连化学物理研究所_会议论文

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Recommended Citation:
Yang XM. Photoinduce Chemistry of Methanol on Stoichiometric TiO2(110) Surface[C]. 见:The 6th Joint Meeting of Chinese Physisists Worldwide. 中国. 2009-8-3.
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