A strategy to incorporate monodispersed PbS nanoparticles into ordered mesoporous silica monolith

被引：2

作者：

Liu, Dan ^{[1
]}

Lei, Jia-Heng ^{[1
]}

Guo, Li-Ping ^{[1
]}

Yan, Xue-Min ^{[1
]}

机构：

[1] Wuhan Univ Technol, Dept Appl Chem, Sch Sci, Wuhan 430070, Peoples R China

来源：

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 2008年 / 46卷 / 01期

基金：

中国国家自然科学基金;

关键词：

mesoporous silica; host-guest chemistry; semiconductor; monolith;

D O I：

10.1007/s10971-008-1678-3

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A new synthetic procedure has been developed for the preparation of ordered mesoporous silica monoliths doped with uniform PbS nanoparticles (NPs). Ordered mesoporous silica monoliths functionalized with thiol groups have been synthesized through co-condensation method in a lyotropic liquid crystalline system. Thiol groups on the interior wall facilitate the incorporation of Pb2+ cations and the formation of PbS NPs inside the ordered mesopores. Combined analysis results indicate that the PbS NPs with a uniform particle size of about 2.5 nm are mostly confined inside the ordered pores of hosts. A great blue shift in the absorbance spectrum has been observed, which shows an obvious quantum confinement effect.

引用

页码：57 / 62

页数：6

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