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Indexed by:期刊论文

Date of Publication:2015-03-01

Journal:MATERIALS LETTERS

Included Journals:SCIE、EI、Scopus

Volume:142

Page Number:269-272

ISSN No.:0167-577X

Key Words:Sol-gel preparation; Porous materials; Hollow spheres; Dual templates; Vesicle approach

Abstract:Hollow mesoporous silica spheres (HMSSs) with ordered mesoporous and uniform size distribution of 200-300 nm were synthesized using mixed surfactant of cationic cetyltrimethylammonium bromide (CTAB) and anionic sodium dodecyl sulfate (SDS) as templates at room temperature. Our work provides a facile approach to synthesize hollow mesoporous silica spheres by a modified Stober method. The results showed that the BET surface area is high up to 951 m(2) g(-1) and the average pores diameter is 2.4 nm. The possible formation mechanism of HMSSs using mixed surfactant templates was discussed by vesicle template approach. (C) 2014 Elsevier B.V. All rights reserved.