STM studies of methanol oxidation to formate on Cu(110) surfaces: I. sequential dosing experiments

被引：36

作者：

Silva, SL ^{[1
]}

Lemor, RM ^{[1
]}

Leibsle, FM ^{[1
]}

机构：

[1] Univ Missouri, Dept Phys, Kansas City, MO 64110 USA

来源：

SURFACE SCIENCE | 1999年 / 421卷 / 1-2期

关键词：

scanning tunneling microscopy; copper; formate; formic acid; methoxy; methanol;

D O I：

10.1016/S0039-6028(98)00844-9

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：

We have used STM to study the oxidation of methanol (CH3OH and CD3OH) to formate on Cu(110) surfaces. Our observations resolve the conflicting conclusions found in a variety of previous studies. We find that, over time, sequential dosing of oxygen followed by methanol onto Cu(110) surfaces will result in quantities of adsorbed formate molecules. These formate molecules, however, can be quite mobile on the surface and thus difficult to image via STM. We have developed and tested a methodology of performing STM experiments by which we can trap rapidly diffusing formate molecules into structures which can be imaged. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：135 / 145

页数：11

共 18 条

[1] XPS, UPS AND THERMAL-DESORPTION STUDIES OF ALCOHOL ADSORPTION ON CU(110) .1. METHANOL [J].