Chemical properties of size-selected Au clusters treated under ambient conditions

被引：15

作者：

Lim, Dong Chan ^{[2
]}

Dietsche, Rainer ^{[3
]}

Gantefoer, Gerd ^{[3
]}

Kim, Young Dok ^{[1
]}

机构：

[1] Sungkyunkwan Univ, Dept Chem, Suwon, Gyeonggi Do, South Korea

[2] Korea Inst Mat Sci, Dept Surface Technol, Chang Won 641010, South Korea

[3] Univ Konstanz, Dept Phys, D-78457 Constance, Germany

来源：

CHEMICAL PHYSICS LETTERS | 2008年 / 457卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2008.04.059

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：

Mass-selected Au clusters consisting of 5-8 atoms deposited on silica were treated with water and aqueous NaOH solution, and the change of their chemical properties upon these treatments was studied. With water, no change was observed, indicating that the clusters survive as individual entities under such realistic conditions. After immersing the samples into the NaOH solution, a change of the oxidation behaviors of the Au clusters was found to occur; the originally oxidation resistant Au-5 and Au-7 become more reactive than the other clusters towards oxidation. Non-scalable chemical behaviors can be obtained from the small clusters even under realistic conditions. (c) 2008 Elsevier B. V. All rights reserved.

引用

页码：391 / 395

页数：5

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