Journal
MICROPOROUS AND MESOPOROUS MATERIALS
Volume 131, Issue 1-3, Pages 21-27Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.micromeso.2009.11.036
Keywords
Mesoporous silica; Multilayer vesicle; Co-surfactant; Self-assembly
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Funding
- National Natural Science Foundation of China [20273075, 20221603, 20490200]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry
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Mesoporous silica vesicles (MSV) with a hierarchical structure were developed using triblock copolymer Pluronic P103 and anionic surfactant sodium dodecyl sulfate (SDS) as a co-surfactant in the present of an inorganic salt, sodium fluoride (NaF). To some extent, variation in the particle size and vesicle cavity diameter can be achieved by adjusting the anionic-nonionic surfactant molar ratio. An onion-like vesicle morphology was obtained by changing the inorganic salt concentration. Based on the fitting of small angle neutron scattering data, a formation mechanism has been proposed. This work opens up a new way to synthesize mesoporous silica vesicles with controllable hierarchical structure using nonionic surfactant P103 and anionic surfactant SDS. (C) 2009 Elsevier Inc. All rights reserved.
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