【作者】 胡军； 周丽绘； 李鸿宁； 刘洪来； 胡英；

【Author】 HU Jun, ZHOU Li-hui, Li Hong-ning, LIU Hong-Lai, HUYing(Department of Chemistry, National United Chemical Engineering Laboratory, East China University of Science and Technology, Shanghai 200237, China)

【机构】 华东理工大学化学系国家重点化学工程联合实验室；

【摘要】 以Gemini表面活性剂GEM16-1-Ar-1-16为模板剂,在其乙醇水溶液中合成了500-700 nm粒径的氧化硅纳米空心球体,对其微观结构进行了表征和讨论,探讨了偶联表面活性剂的结构特征,和以其为模板剂合成空心球结构的机理.更多还原

【Abstract】 Gemini surfactants, GEM16-1-Ar-1-16, with two quaternary ammonium head groups separated by a rigid hydrophobic chain spacer, and two 16-carbon length hydrophobic tail, can form large scale aggregations of micelles. Simply assembling oligomeric silica onto the GEM16-l-Ar-1-16 surfactant templated micelles, and subsequently decomposing the template by calcination lead to preparation of hollow silica spheres with diameter between 500 to 700 nm. Scanning and transmission electron microscopy images demonstrate the structure of the hollow spheres clearly. The proposed mechanism of formation can partly be suggested by the X-ray diffraction.更多还原