Self-assembly of a silica-surfactant nanocomposite in a porous alumina membrane

被引:439
作者
Yamaguchi, A [1 ]
Uejo, F
Yoda, T
Uchida, T
Tanamura, Y
Yamashita, T
Teramae, N
机构
[1] Tohoku Univ, Grad Sch Sci, Dept Chem, Aoba Ku, Sendai, Miyagi 9808578, Japan
[2] Japan Sci & Technol Agcy, CREST, Sendai, Miyagi 9808578, Japan
基金
日本学术振兴会;
关键词
D O I
10.1038/nmat1107
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
A mesoporous membrane composed of nanochannels with a uniform diameter has a potential use for precise size-exclusive separation of molecules. Here, we report a novel method to form a hybrid membrane composed of silica-surfactant nanocomposite and a porous alumina membrane, by which size-selective transport of molecules across the membrane becomes possible. The nanocomposite formed inside each columnar alumina pore was an assembly of surfactant-templated silica-nanochannels with a channel diameter of 3.4 nm; the channel direction being predominantly oriented along the wall of the columnar alumina pore. Molecules could be transported across the membrane including the silica-surfactant nanocomposite with a capability of nanometre-order size-exclusive separation. Our proposed membrane system has a potential use not only for separation science, but also catalysis and chip technologies.
引用
收藏
页码:337 / 341
页数:5
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