Adsorption of SO2 on Pd(100) studied by S K-edge XAFS

被引：6

作者：

Terada, S ^{[1
]}

Sakano, M ^{[1
]}

Kitajima, Y ^{[1
]}

Yokoyama, T ^{[1
]}

Ohta, T ^{[1
]}

机构：

[1] NATL LAB HIGH ENERGY PHYS,PHOTON FACTORY,TSUKUBA,IBARAKI 305,JAPAN

来源：

JOURNAL DE PHYSIQUE IV | 1997年 / 7卷 / C2期

关键词：

D O I：

10.1051/jp4:1997211

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Surface structure and an electronic property of SO2 adsorbed on Pd(100) were studied by S K-edge NEXAFS, SEXAFS and Sis XPS. The molecule was found by the polar-angle dependent NEXAFS to adsorb with the molecular plane normal to the Pd(100) surface. This is a clear contrast to the SO2/Ni(100) case where the molecule lies flat on the surface. From the peak position of XPS and the pi* peak height of the NEXAFS spectra, we can deduce that the amount of the charge transfer from Pd to SOI is smaller than that from Ni. The SEXAFS analysis indicates that the S atom of the molecule is located at the bridge site and that one O atom also directly interacts with the metal surface. The difference of the adsorbate structure between SO2/Pd and SO2/Ni can be explained in terms of chemical bonding between the substrate and SO2.

引用

页码：703 / 704

页数：2

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