Nanoparticles of gold on γ-Al2O3 produced by dc magnetron sputtering

被引：83

作者：

Veith, GM ^{[1
]}

Lupini, AR ^{[1
]}

Pennycook, SJ ^{[1
]}

Ownby, GW ^{[1
]}

Dudney, NJ ^{[1
]}

机构：

[1] Oak Ridge Natl Lab, Condensed Matter Sci Div, Oak Ridge, TN 37831 USA

来源：

JOURNAL OF CATALYSIS | 2005年 / 231卷 / 01期

关键词：

sputtering; oxidation catalysts; XPS; aberration-corrected STEM; gold nanoparticles; CO oxidation; gamma-Al2O3;

D O I：

10.1016/j.jcat.2004.12.008

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：

This paper describes a one-step magnetron sputtering technique for the preparation of supported catalyst particles that has a number of advantages over existing methods. In order to demonstrate the effectiveness of this technique, a supported gold on gamma-Al2O3 oxidation catalyst has been prepared. This catalyst is as active as catalysts prepared via traditional chemical methods for the oxidation of carbon monoxide (TOF 1.1 conversions/surface Au atom/second at 300 K and 16% CO/8% O-2/He). Aberration-corrected scanning transmission electron microscopy demonstrates that this technique produces gold nanoparticles in a size range that is claimed in the literature to be most active (about 2 nm). (c) 2004 Elsevier Inc. All rights reserved.

引用

页码：151 / 158

页数：8