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论文类型：期刊论文

发表时间：2015-03-01

发表刊物：MATERIALS LETTERS

收录刊物：SCIE、EI、Scopus

卷号：142

页面范围：269-272

ISSN号：0167-577X

关键字：Sol-gel preparation; Porous materials; Hollow spheres; Dual templates; Vesicle approach

摘要：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.