Synthesis and Characterization of Mesoporous Silica Vesicles Using Cationic-anionic Binary Surfactant as Template

doi:10.7503/cjcu20130106

Chem. J. Chinese Universities ›› 2013, Vol. 34 ›› Issue (6): 1309.doi: 10.7503/cjcu20130106

• Article: Inorganic Chemistry • Previous Articles Next Articles

Synthesis and Characterization of Mesoporous Silica Vesicles Using Cationic-anionic Binary Surfactant as Template

MU Ming-Wei¹, PENG Ce², WANG Song², JIN Chun-Yang¹, CAO Xian-Ying¹, CAI Qiang²

1. College of Materials and Chemical Engineering, Hainan University, Haikou 570228, China;
2. Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China

Received:2013-01-30 Online:2013-06-10 Published:2013-04-08

Abstract

Abstract:

Mesoporous silica vesicles were synthesized using cationic surfactant hexadecyl trimethyl ammonium bromide(CTAB) and anionic surfactants sodium dodecyl sulfonate(SDS) in molar ratios of 1.0-2.3 as templates, tetraethyl orthosilicate(TEOS) as silica source at 68℃ in ammonia solution medium. The samples were characterized by scanning electron microscopy(SEM), small angle X-ray diffraction(SXRD), transmission electron microscopy(TEM), thermo gravimetric analysis(TGA) and nitrogen adsorption-desorption isotherms measurments. The results indicate that the samples are the continue aggregates of mesoporous silica vesicles with diameters of ca. 50 nm. The Brunauer-Emmett-Teller(BET) surface area and nonlocal density functional theory(NLDFT) pore diameter of the samples are 826 m²/g and 4.0 nm, respectively. The formation mechanism of the vesicles was also discussed.

Key words: Anion and cation surfactants, Mesoporous material, Silica, Vesicle

CLC Number:

O613

TrendMD:

MU Ming-Wei, PENG Ce, WANG Song, JIN Chun-Yang, CAO Xian-Ying, CAI Qiang. Synthesis and Characterization of Mesoporous Silica Vesicles Using Cationic-anionic Binary Surfactant as Template[J]. Chem. J. Chinese Universities, 2013, 34(6): 1309.

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Synthesis and Characterization of Mesoporous Silica Vesicles Using Cationic-anionic Binary Surfactant as Template

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