Size-controlled preparation of Cu2O octahedron nanocrystals and studies on their optical absorption

被引：154

作者：

He, P ^{[1
]}

Shen, XH ^{[1
]}

Gao, HC ^{[1
]}

机构：

[1] Peking Univ, Coll Chem & Mol Engn, Dept Appl Chem, Beijing 100871, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2005年 / 284卷 / 02期

基金：

中国国家自然科学基金;

关键词：

cuprous oxide; nanooctahedron; gamma-irradiation; microemulsion;

D O I：

10.1016/j.jcis.2004.10.060

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：

We report herein the size-controlled preparation of monodispersed cuprous oxide octahedron nanocrystals smaller than 100 mm. The method is based on the reduction of copper nitrate in Triton X-100 water-in-oil (w/o) microemulsions by gamma-irradiation. The average edge length of the octahedron-shaped nanocrystals varies from 45 to 95 nm as a function of the dose rate. The quantum confinement effect was illustrated by the blueshift in the optical absorption. In addition, the growth process was also traced by absorption spectra. (c) 2004 Elsevier Inc. All rights reserved.

引用

页码：510 / 515

页数：6

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