SURFACE-STRUCTURES AND ELECTRONIC-PROPERTIES OF SO2 ADSORBED ON NI(111) AND NI(100) STUDIED BY S-K-EDGE X-RAY-ABSORPTION FINE-STRUCTURE SPECTROSCOPY

被引：69

作者：

YOKOYAMA, T

TERADA, S

YAGI, S

IMANISHI, A

TAKENAKA, S

KITAJIMA, Y

OHTA, T

机构：

[1] UNIV TOKYO,SCH MED,DEPT CHEM,BUNKYO KU,TOKYO 113,JAPAN

[2] HIROSHIMA UNIV,FAC SCI,DEPT MAT SCI,HIGASHIHIROSHIMA 724,JAPAN

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

来源：

SURFACE SCIENCE | 1995年 / 324卷 / 01期

关键词：

CHEMISORPTION; LOW INDEX SINGLE CRYSTAL SURFACES; NEAR EDGE EXTENDED X-RAY ABSORPTION FINE STRUCTURE (NEXAFS); NICKEL; SULFUR DIOXIDE; SURFACE STRUCTURE; MORPHOLOGY; ROUGHNESS; AND TOPOGRAPHY; SURFACE EXTENDED X-RAY ABSORPTION FINE STRUCTURE (SEXAFS); X-RAY PHOTOELECTRON SPECTROSCOPY;

D O I：

10.1016/0039-6028(94)00692-X

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：

Surface structures and electronic properties of submonolayer sulfur dioxide, SO2, molecularly adsorbed on Ni(111) and Ni(100) at similar to 170 K have been investigated by means of S K-edge surface extended X-ray-absorption fine structure (SEXAFS), near-edge X-ray-absorption fine structure (NEXAFS) and S1s X-ray photoelectron spectroscopy (XPS) measurements. NEXAFS and SEXAFS have clarified that on both surfaces the SO2 molecule adsorbs with the molecular plane parallel to the surface and the elongated intramolecular S-O bond lengths. The S atom directly interacts with substrate Ni, located at the bridge sites on both surfaces. Such adsorption geometries for submonolayer SO2 on metal surfaces have never been reported before. Comparing to other SO2/metal systems the determined surface structures are discussed in terms of chemical bonding.

引用

页码：25 / 34

页数：10

共 24 条

[1] SO2 STRUCTURE AND REACTIVITY ON CLEAN AND SULFUR MODIFIED PD(100) [J].