Size-controlled preparation of Cu2O octahedron nanocrystals and studies on their optical absorption
Size-controlled preparation of Cu2O octahedron nanocrystals and studies on their optical absorption
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DOI：
10.1016/j.jcis.2004.10.060
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发表时间：
2005-04-15
影响因子：
9.9
通讯作者：
Gao, HC
中科院分区：
文献类型：
--
作者：
He, P;Shen, XH;Gao, HC
本文报道了尺寸可控的单分散氧化亚铜八面体纳米晶的制备。该方法基于Triton X-100油包水(W/O)微乳液中硝酸铜的伽马辐照还原。八面体形状纳米晶体的平均边缘长度随着剂量率的变化而变化，从45 nm到95 nm不等。光吸收的蓝移说明了量子限制效应。此外，还通过吸收光谱对生长过程进行了跟踪。(C)2004 Elsevier Inc.保留所有权利。
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.