A facile approach to load CdSe nanocrystallites into mesoporous SBA-15

被引：42
|
作者：
Shan, Y [1 ]
Gao, L [1 ]
Zheng, S [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2004年 / 88卷 / 01期
关键词：
microporous materials; nanostructures; semiconductors;
D O I：
10.1016/j.matchemphys.2004.07.007
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
CdSe nanocrystallites have been successfully loaded inside the channel of SBA-15 by a two-step impregnation at room temperature. The method is safe and does not require any special equipment. XRD, N-2 adsorption-desorption isotherms, HRTEM, EDS, FTIR, and UV-vis absorption spectrum were used to characterize the structure of the composite materials. It is found that most of the CdSe nanocrystallites are about 7 nm, and they stretch along the channels of SBA-15 with the length varying from 10 to 40 nm. The CdSe nanocrystallites inside the SBA-15 hosts show a significant blue-shift in the UV-vis absorption spectrum. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：192 / 196
页数：5
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