Spectroscopic evidence for the partial dissociation of H2O on ZnO(1010)

被引：103

作者：

Wang, Y ^{[1
]}

Muhler, M

Wöll, C

机构：

[1] Ruhr Univ Bochum, Lehrstuhl Phys Chem 1, D-44780 Bochum, Germany

[2] Ruhr Univ Bochum, Lehrstuhl Tech Chem, D-44780 Bochum, Germany

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2006年 / 8卷 / 13期

关键词：

D O I：

10.1039/b515489h

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 interaction of water with the non-polar ZnO(10 (1) over bar0) surface has been studied by high resolution electron energy loss spectroscopy (HREELS) and thermal desorption spectroscopy (TDS). Adsorption of water at room temperature leads to the partial dissociation of water molecules giving rise to a well defined (2 x 1) superstructure. This observation was conformed by the HREELS data which show the water-induced O-H stretching modes at 396 and 460 meV ( 3193 and 3709 cm(-1)) as well as the peak at 456 meV (3677 cm(-1)) arising from the OH species. The large red shift of the loss at 396 meV indicates unusually strong hydrogen bonding interactions of water to both neighbouring adsorbate molecules and the surface O atoms which are responsible for the partial dissociation of water molecules on the perfect ZnO(10 (1) over bar0) surface.

引用

页码：1521 / 1524

页数：4

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