Temperature programmed desorption of weakly bound adsorbates on Au(111)

被引：26

作者：

Engelhart, Daniel P.

Wagner, Roman J. V.

Meling, Artur

Wodtke, Alec M.

Schafer, Tim ^{[1
]}

机构：

[1] Univ Gottingen, Inst Phys Chem, Tammannstr 6, D-37077 Gottingen, Germany

来源：

SURFACE SCIENCE | 2016年 / 650卷

关键词：

Temperature programmed desorption; Dispersion forces; Au(111); PROMOTED ELECTRON-EMISSION; THERMAL-DESORPTION; ENERGY-TRANSFER; METAL-SURFACE; ADSORPTION; CO; EXCITATION; DEPENDENCE; LAYERS;

D O I：

10.1016/j.susc.2015.06.010

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 performed temperature programmed desorption (TPD) experiments to analyze the desorption kinetics of Ar, Kr, Xe, C2H2, SF6, N-2, NO and CO on Au(111). We report desorption activation energies (Edes), which are an excellent proxy for the binding energies. The derived binding energies scale with the polarizability of the molecules, consistent with the conclusion that the surface-adsorbate bonds arise due to dispersion forces. The reported results serve as a benchmark for theories of dispersion force interactions of molecules at metal surfaces. (C) 2015 Elsevier B.V. All rights reserved.

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页码：11 / 16

页数：6

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