期刊
JOURNAL OF MATERIALS SCIENCE
卷 45, 期 20, 页码 5567-5573出版社
SPRINGER
DOI: 10.1007/s10853-010-4618-x
关键词
-
资金
- National Natural Scientific Foundation of China (NNSFC) [50821062]
- Chinese Academy of Sciences
Porous silica with hierarchical structures was prepared from ethyl-cyanoethyl cellulose/poly(3-(methacryloyloxy)propyl-trimethoxysilane) (E-CE)C/P(MPTOS) composites with fixed cholesteric liquid crystalline (LC) phase. The scanning and transmission electron microscopy (SEM and TEM) and N-2 sorption measurements results indicate that the silica prepared from cholesteric LC composites is of hierarchical macro-, meso- and micro-porous structures, and the average pore size of the silica can be tailored by the content of the cholesteric LC phase in the (E-CE)C/P(MPTOS) composites. The resultant silicas have high specific surface area with the highest value of 837 m(2)/g at the pore volume of 0.83 cm(3)/g. This approach provides a new choice for the preparation of porous silica materials, especially from the templates that are not compatible with aqueous system.
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