Adsorption state and molecular orientation of ammonia on ZnO(1010) studied by photoelectron spectroscopy and near-edge X-ray absorption fine structure spectroscopy

被引：38
|
作者：
Ozawa, K [1 ]
Hasegawa, T
Edamoto, K
Takahashi, K
Kamada, M
机构：
[1] Tokyo Inst Technol, Dept Chem & Mat Sci, Meguro Ku, Tokyo 1520033, Japan
[2] Inst Mol Sci, Okazaki, Aichi 4448585, Japan
来源：
JOURNAL OF PHYSICAL CHEMISTRY B | 2002年 / 106卷 / 36期
关键词：
D O I：
10.1021/jp0205970
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The adsorption state of ammonia (NH3) on the ZnO(10 (1) over bar0) surface has been investigated using photoelectron spectroscopy (PES) and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy. The core-level and valence-band PES measurements reveal that ammonia adsorbs molecularly via its N atom on ZnO(10 (1) over bar0) and that no dissociated species are formed at room temperature. The orientation of adsorbed NH3 is investigated by the polarization-dependent N K-edge NEXAFS measurements, and it is found that the C-3v molecular axis of NH3 is inclined in the [000 (1) over bar] direction with the tilt angle of 33degrees-41degrees from the surface normal.
引用
收藏
页码：9380 / 9386
页数：7
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