Room temperature adsorption of NH3 on Zn-terminated ZnO(0001)

被引：7
|
作者：
Hasegawa, T
Shirotori, Y
Ozawa, K [1 ]
Edamoto, K
Takahashi, K
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：
APPLIED SURFACE SCIENCE | 2004年 / 237卷 / 1-4期
关键词：
photoelectron spectroscopy; ammonia; zinc oxide; low-index surfaces; adsorption; alkali metal;
D O I：
10.1016/j.apsusc.2004.06.129
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：
Adsorption process of ammonia on the Zn-terminated ZnO(0001) surface at room temperature has been studied by photoelectron spectroscopy utilizing synchrotron radiation. Coverage-dependent measurements of the N 1s core-level peak and the work function change have been carried out. It is revealed that ammonia adsorbs molecularly in the initial stages of adsorption, whereas deprotonated species are formed after some amount of molecular ammonia is accumulated on the surface. The reactivity of the K-modified ZnO(0001) surface towards ammonia adsorption has also been investigated and found to be significantly lowered by predeposited K. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：352 / 357
页数：6
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