Elaborate control over the morphology and structure of mercapto-functionalized mesoporous silicas as multipurpose carriers

被引：25
作者：
Du, Xin [1 ,2 ,3 ]
He, Junhui [1 ,2 ]
机构：
[1] Chinese Acad Sci, Funct Nanomat Lab, Beijing 100190, Peoples R China
[2] Chinese Acad Sci, Key Lab Photochem Convers & Optoelect Mat, Tech Inst Phys & Chem, Beijing 100190, Peoples R China
[3] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
来源：
DALTON TRANSACTIONS | 2010年 / 39卷 / 38期
基金：
中国国家自然科学基金;
关键词：
NOBLE-METAL NANOPARTICLES; ULTRATHIN TIO2-GEL FILMS; IN-SITU SYNTHESIS; GOLD NANOPARTICLES; CDTE NANOCRYSTALS; ORGANIC FUNCTIONALIZATION; COLLOIDAL SUSPENSIONS; THERMAL-STABILITY; AQUEOUS SYNTHESIS; NANOFIBERS;
D O I：
10.1039/c0dt00194e
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
In this article, mercapto-functionalized helical mesoporous silica nanorods have been synthesized by a one-step co-condensation of tetraethoxysilane (TEOS) and 3-mercaptopropyltrimethoxysilane (MPTS) using cetyltrimethylammonium bromide (CTAB) as a template. Process parameters, including MPTS concentration, stirring time and added volume of ethanol as co-solvent, were both carefully and accurately regulated, and obtained results showed that these parameters all had large effects on the morphology and structure of products. Furthermore, the helical mesoporous silica nanorods were successfully employed as multipurpose carriers for Au nanoparticles (NPs) and CdTe nanocrystals (NCs) by in situ formation and post-loading, respectively. In a preliminary catalytic test, Au NPs as small as ca. 0.6 nm in the helical mesoporous silica nanorods after calcination showed much enhanced catalytic activity for reduction of methylene blue (MB+).
引用
收藏
页码：9063 / 9072
页数：10
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