Preparation and characterization of CuO nanoparticles encapsulated in mesoporous Silica

被引：20
|
作者：
Wang, Peiyu [1 ]
Zheng, Xiaoping [1 ]
Wu, Xueyong [1 ]
Wei, Xiufang [1 ]
Zhou, Ling [1 ]
机构：
[1] Lanzhou City Univ, Inst Elect Informat Sci & Technol, Sch Belie Engn & Technol, Lanzhou 730000, Peoples R China
来源：
MICROPOROUS AND MESOPOROUS MATERIALS | 2012年 / 149卷 / 01期
关键词：
Nanocomposites; Microstructure; Band gap; PORE CHANNELS; COPPER-OXIDE; THIN-FILMS; CATALYSTS; SIZE;
D O I：
10.1016/j.micromeso.2011.07.002
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
CuO nanoparticles supported in mesoporous silica MCM-41 (or CuO-nano-MCM-41 nanocomposites) were prepared via an in situ method. A 2.10 wt.% Cu loading was achieved without the loss of pore ordering. Highly dispersed and uniform CuO nanoparticles could be detected using transmission electron microscopy (TEM) confirming also the absence of large particles outside the mesopore silica. The bandgaps of the resulting CuO particles are widened from 1.7 to 3.15 eV for an indirect allowed bandgap and from 3.25 to 4.43 eV for a direct allowed interband transition owing to the quantum size effect. (C) 2011 Elsevier Inc. All rights reserved.
引用
收藏
页码：181 / 185
页数：5
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