Study of the adsorption structure of NO on Pt(111) by scanning tunneling microscopy and high-resolution electron energy-loss spectroscopy

被引：45

作者：

Matsumoto, M ^{[1
]}

Fukutani, K

Okano, T

Miyake, K

Shigekawa, H

Kato, H

Okuyama, H

Kawai, M

机构：

[1] Univ Tokyo, Inst Ind Sci, Tokyo 1538505, Japan

[2] Univ Tsukuba, JST, CREST, Inst Appl Phys, Tsukuba, Ibaraki 3058573, Japan

[3] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan

来源：

SURFACE SCIENCE | 2000年 / 454卷 / 01期

关键词：

chemisorption; electron energy loss spectroscopy (EELS); electron stimulated desorption (ESD); nitrogen oxides; platinum; scanning tunneling microscopy; surface structure; morphology; roughness; and topography; vibrations of adsorbed molecules;

D O I：

10.1016/S0039-6028(00)00266-1

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 structure of nitric oxide (NO) on a Pt(111) surface was studied by scanning tunneling microscopy (STM) and high-resolution electron energy-loss spectroscopy (HREELS). The coexistence of two species is observed by STM after saturating the surface with NO at 70 K and annealing to 215 K. Two pairs of N-O and Pt-N stretching vibrational frequencies are observed in HREELS spectra after annealing, which are assigned to the two species observed by STM, Comparison between the spectra of HREELS and infrared absorption spectroscopy (IRAS) indicates that IRAS is less sensitive to the lower-frequency mode. A new model for the adsorption structure of NO on the Pt(111) surface is proposed and discussed, (C) 2000 Published by Elsevier Science B.V. All rights reserved.

引用

页码：101 / 105

页数：5

共 24 条

[1] AN INFRARED STUDY OF NO ADSORPTION AT DEFECT SITES ON PT(111) [J].