高等学校化学学报2013，Vol.34Issue(6)：1309-1312,4.DOI:10.7503/cjcu20130106
二元阴阳离子表面活性剂法合成介孔氧化硅囊泡
Synthesis and Characterization of Mesoporous Silica Vesicles Using Cationic-anionic Binary Surfactant as Template
摘要
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.关键词
阴、阳离子表面活性剂/介孔材料/氧化硅/囊泡Key words
Anion and cation surfactants/ Mesoporous material/ Silica/ Vesicle分类
化学化工引用本文复制引用
牟鸣薇,彭策,王颂,金春阳,曹献英,蔡强..二元阴阳离子表面活性剂法合成介孔氧化硅囊泡[J].高等学校化学学报,2013,34(6):1309-1312,4.基金项目
国家"九七三"计划项目(批准号:20131970096)资助. （批准号:20131970096）
