Quenching of growth of ZnO nanoparticles by adsorption of octanethiol

被引：207

作者：

Pesika, NS

Hu, ZS

Stebe, KJ

Searson, PC ^{[1
]}

机构：

[1] Johns Hopkins Univ, Dept Chem Engn, Baltimore, MD 21218 USA

[2] Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2002年 / 106卷 / 28期

基金：

美国国家科学基金会; 美国国家航空航天局;

关键词：

D O I：

10.1021/jp0144606

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：

To exploit the size dependent properties of nanoparticles, it is essential to control the particle size. We show that injection of octanethiol into suspensions of, ZnO particles can be used to quench particle growth. X-ray photoelectron spectroscopy studies of the adsorption of octanethiol on ZnO single crystals indicate relatively weak adsorption of thiolate and sulfonate species dependent on the crystal orientation. These results suggest that adsorption of thiolate and sulfonate groups on ZnO particles in suspension prevent dissolution of the solid phase. Furthermore, the octanethiol is adsorbed sufficiently strongly to quench growth but can be easily removed for-subsequent surface functionalization.

引用

页码：6985 / 6990

页数：6