详细信息
乙醇调控合成MgO复合硅基纳米空心球
Effect of Ethanol on Controlling Synthesis of MgO Modified Silica Hollow Spheres
文献类型:期刊文献
中文题名:乙醇调控合成MgO复合硅基纳米空心球
英文题名:Effect of Ethanol on Controlling Synthesis of MgO Modified Silica Hollow Spheres
作者:范玉冰[1];荆长勇[1];马燕辉[1];胡军[1];刘洪来[1]
机构:[1]华东理工大学化学工程联合国家重点实验室和化学系,上海200237
年份:2010
卷号:36
期号:2
起止页码:216
中文期刊名:华东理工大学学报(自然科学版)
外文期刊名:Journal of East China University of Science and Technology
收录:CSTPCD;;Scopus;北大核心:【北大核心2008】;CSCD:【CSCD2011_2012】;
基金:国家高技术研究发展计划(2008AA062302);国家自然科学基金(0776045;20736002);上海市自然科学基金(07ZR14029)
语种:中文
中文关键词:纳米空心球;MgO-SiO2复合材料;表面诱导;金属掺杂
外文关键词:nano hollow sphere; MgO-SiO_2 complex material; interface selfassembly; metal impregnation
摘要:以Gemini表面活性剂GEM16-6-16为模板剂,乙醇为调控剂,采用共聚或浸渍方法,合成了MgO-SiO2复合材料。分别采用X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电镜(TEM)等方法对该复合材料进行了表征,结果表明:该材料为粒径600~700 nm的纳米空心球,部分MgO晶体在空心球体表面生长。通过研究GEM16-6-16在乙醇水溶液中的结构特征,探讨了以其为模板剂合成空心球结构的机理。
Using Gemini surfactants GEM16-6-16 as template and ethanol as controlling agent,MgO-SiO_2 complexes hollow spheres were synthesized by co-condensation or impregnation methods.As observed by XRD,SEM and TEM,the complexes are hollow spheres with diameter of 600 to 700 nm,and some of the MgO crystals grow on the surface of hollow spheres.The synthesis mechanism of hollow spheres was tentatively elucidated by studying the change of micelle structures of GEM16-6-16 in ethanol aqueous solutions with different molar ratios of ethanol to water,and also the effects of ethanol on the competition between hydrolysis and condensation of TEOS.
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