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学科主题: 物理化学
题名: A Compact Apparatus for Surface Photocatalytic Reaction Dynamics: Low Background Detection of H2
作者: Ren ZF(任泽峰) ;  Guo Q(郭庆) ;  Xiao CL(肖春雷) ;  Xu CB(徐晨彪) ;  Yang XM(杨学明)
会议名称: XXIII International Symposium on Molecular Beams
会议日期: 2009-6-1
出版日期: 2009-06-01
会议地点: 中国
通讯作者: 杨学明
部门归属: 十一室
主办者: 中国科学大连化学物理研究所
摘要: A compact apparatus based on universal detector with electron bombardment ionization has been constructed for surface photocatalytic dynamics. Extremely high vacuum (<5×10-12 Torr) for the detector’s ionization region is achieved using multiple ultrahigh vacuum pumps. In addition to a home-made liquid nitrogen shielding and a turbomolecular pump, a simple and low-consumption titanium sublimation pump, rather than the complicated and high-consumption He cold head1 is used to pump the detector’s ionization region with the high pumping speed for H2. Therefore, the background H2 in the detector can be considerablely reduced. This apparatus will be employed to quantitatively measure the products, like H2 and H, from the surface reaction. A home-made quantitative molecular beam doser is also built2-4, and will be used to acquire temperature program desorption spectra. The apparatus includes the standard surface science tools for preparation and characterization of surface samples, LEED, AES, ion gun and so on. This apparatus will be coupled to a set of femtosecond laser system to study the surface photocatalytic system, like water and methanol on TiO2(110) surfaces.
语种: 中文
内容类型: 会议论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/113964
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:
Ren ZF,Guo Q,Xiao CL,et al. A Compact Apparatus for Surface Photocatalytic Reaction Dynamics: Low Background Detection of H2[C]. 见:XXIII International Symposium on Molecular Beams. 中国. 2009-6-1.
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