Support effects on the nucleation, growth, and morphology of gold nano-clusters

被引：72

作者：

Min, BK ^{[1
]}

Wallace, WT ^{[1
]}

Goodman, DW ^{[1
]}

机构：

[1] Texas A&M Univ, Dept Chem, College Stn, TX 77842 USA

来源：

SURFACE SCIENCE | 2006年 / 600卷 / 02期

关键词：

scanning tuneling microscopy; nucleation; defects; metal clusters; catalysis;

D O I：

10.1016/j.susc.2005.10.024

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 nucleation, growth, and morphology of gold (Au) clusters oil ail irreducible oxide (SiO2), highly reduced TiOx (x similar to 1). and less reduced TiO2 (x similar to 2) were investigated by scanning tunneling microscopy (STM) with the goal of understanding the relationship between the nucleation, growth, and morphology of Au clusters and the reducibility of the oxide support. Au clusters show preferential nucleation and growth oil a TiOx surface compared to it SiO2 surface, In addition, higher densities of Au clusters were found oil highly reduced TiOx. suggesting that reduced Ti sites play a role as an active site for the nucleation and growth of Au clusters. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：L7 / L11

页数：5

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