In situ adsorption method for synthesis of binary semiconductor US nanocrystals inside mesoporous SBA-15

被引：39

作者：

Gao, F ^{[1
]}

Lu, QY ^{[1
]}

Zhao, DY ^{[1
]}

机构：

[1] Fudan Univ, Mol Catalysis & Innovat Mat Lab, Dept Chem, Shanghai 200433, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2002年 / 360卷 / 5-6期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/S0009-2614(02)00897-7

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：

Binary semiconductor CdS nanocrystals have been prepared inside the channels of mesoporous SBA-15 using an in situ adsorption method combining a surface modification scheme and a wet impregnation technique by functionalizing the SBA-15 surface with thiol groups, adsorbing cadmium cations, and calcining in N-2 atmosphere at 300 degreesC. The combined results of X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM) firstly reveal that CdS nanocrystals with uniform size of about 6 nm are formed and mono-dispersed inside the channels of mesoporous SBA-15. And a blue shift is observed in UV-Vis absorption spectrum and photoluminescence (PL) spectrum, indicating the quantum size effect of nanocrystalline CdS. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：585 / 591

页数：7

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