Long-range ordered lyotropic liquid crystals in intermediate-range ordered protic ionic liquid used as templates for hierarchically porous silica

被引：26
作者：
Chen, Zhengfei [1 ,2 ]
Greaves, Tamar L. [2 ]
Caruso, Rachel A. [1 ,2 ]
Drummond, Calum J. [2 ]
机构：
[1] Univ Melbourne, Sch Chem, PFPC, Melbourne, Vic 3010, Australia
[2] CSIRO Mat Sci & Engn, Clayton, Vic 3169, Australia
来源：
JOURNAL OF MATERIALS CHEMISTRY | 2012年 / 22卷 / 19期
基金：
澳大利亚研究理事会;
关键词：
MESOPOROUS SILICA; CONTROLLED-RELEASE; PHYSICOCHEMICAL PROPERTIES; INORGANIC MATERIALS; PHASE-BEHAVIOR; NANOSTRUCTURE; NANOPARTICLES; AMPHIPHILES; STRATEGIES; MONOLITHS;
D O I：
10.1039/c2jm30708a
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：
An approach to prepare hierarchically nanostructured silica materials possessing both micro- and mesoporosity has been investigated. Tetramethoxysilane was hydrolysed in the long-range ordered lyotropic liquid crystal (LLC) phase formed from the non-ionic block copolymer Pluronic P123 in the intermediate-range ordered protic ionic liquid (PIL), ethylammonium nitrate (EAN). The structures of the silica materials prepared with various amounts of inorganic precursor were characterized by using small angle X-ray scattering, N-2 gas sorption, and TEM. The final silica materials contained a disordered population of micropores coexisting with an ordered population of mesopores with an average pore size of 1.0 nm and 4.5 nm respectively. The bimodal nanoscale pore structure reflects the nanostructure of the EAN PIL and that of the P123-EAN LLC phase, respectively. The specific surface area of the micro/mesoporous silica ranged from 485 to 949 m(2)g(-1), depending on the inorganic precursor concentration.
引用
收藏
页码：10069 / 10076
页数：8
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