Nucleation and growth kinetics of gold nanoparticles on MgO(100) studied by UHV-AFM

被引：46

作者：

Hojrup-Hansen, K ^{[1
]}

Ferrero, S ^{[1
]}

Henry, CR ^{[1
]}

机构：

[1] CNRS, CRMC2, F-13288 Marseille 09, France

来源：

APPLIED SURFACE SCIENCE | 2004年 / 226卷 / 1-3期

关键词：

MgO(100); gold clusters; nucleation; growth; AFM;

D O I：

10.1016/j.apsusc.2003.11.017

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：

Nucleation kinetics of gold on MgO(1 0 0) has been, for the first time, studied in situ by atomic force microscopy (AFM). The density of clusters first increases and reach a saturation value before to decrease when the coalescence stage is reached. The saturation density of clusters decreases when the substrate temperature increases following an Arrhenius law with an activation energy of 0.12 eV. It is shown that the same behaviour occurs for the, previously studied, nucleation of Ag and Pd on MgO(1 0 0). In each case the activation energy is proportional to the calculated adsorption energy of a single metal atom on the MgO(1 0 0) surface. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：167 / 172

页数：6