Document Detail

Anion-Exchange-Driven Disassembly of a SiO(2)/CTAB Composite Mesophase: the Formation of Hollow Mesoporous Silica Spheres.
MedLine Citation:
PMID:  22897787     Owner:  NLM     Status:  Publisher    
Silica-based surfactant/inorganic composite mesophases have been extremely studied. In this work, we developed a mild method to realize the room-temperature disassembly of a SiO(2)/cetyltrimethylammonium bromide (CTAB) mesophase in a neutral medium. Using KMnO(4) as a typical etching agent, SiO(2)/CTAB mesophase spheres were partially disassembled into normal or rattle-type hollow structures. The disassembly of the SiO(2)/CTAB spheres was supposed to be driven by anion exchange between permanganate and silicate ions. This unique method makes possible the selective etching of a SiO(2)/CTAB mesophase over a SiO(2) phase.
Qiyu Yu; Junfeng Hui; Pengpeng Wang; Xun Wang
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-8-16
Journal Detail:
Title:  Inorganic chemistry     Volume:  -     ISSN:  1520-510X     ISO Abbreviation:  Inorg Chem     Publication Date:  2012 Aug 
Date Detail:
Created Date:  2012-8-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0366543     Medline TA:  Inorg Chem     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of Chemistry, Tsinghua University , Beijing 100084, People's Republic of China.
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