文献类型：期刊文献

中文题名：三维有序大孔径介孔二氧化硅载体的仿生合成

英文题名：Biomimetic synthesis of mesoporous silica support with a three-dimensional large-pore ordered structure

作者：曹磊[1];汪志银[2];刘向农[3];杨宇翔[1]

机构：[1]华东理工大学化学与分子工程学院,上海200237;[2]浙江林学院理学院,浙江临安311300;[3]扬州大学测试中心,江苏扬州225002

年份：2010

卷号：27

期号：3

起止页码：437

中文期刊名：浙江林学院学报

外文期刊名：Journal of Zhejiang Forestry College

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD_E2011_2012】；

基金：国家自然科学基金资助项目(20577010;20971043);吉林大学无机合成与制备化学国家重点实验室资助项目

语种：中文

中文关键词：无机化学;大孔;介孔二氧化硅;仿生合成

外文关键词：inorganic chemistry; large pore; mesoporous silica; biomimetic synthesis

摘要：介孔二氧化硅作为固定漆酶的载体,在降解氯酚农药研究中意义重大。以正硅酸乙酯(TEOS)为硅源,以不同链长的长链烷基三甲基溴化铵(CnTAB,n=12,14,16,18)和两性生物表面活性剂椰油基甘氨酸钠(YCS)为混合模板剂,仿生合成了具有三维六方结构的有序介孔二氧化硅。和传统介孔二氧化硅载体相比,三维六方介孔二氧化硅具有较大的孔径及比表面积,且相邻孔道之间发生相互的连通。当使用链长为C16以上的阳离子表面活性剂和YCS混合时,得到孔径为9nm左右,且具有不同形貌的大孔径介孔二氧化硅,为酶的固定化提供了优良载体。
Mesoporous silica was used as a support to immobilize enzyme （laccase） that were important in chlorphenol degeneration research. To biomimetically synthesize the mesoporous silica with an ordered three-dimensional （3D）,hexagonal structure,cationic surfactants,alkyltrimethylammonium bromides （CnTAB,n = 12,14,16,and 18） with different chain lengths and an amphoteric biological surfactant,Sodium N-dodecyl glycine （YCS）,were used as mixed templates in a mixture of H2SO4 as the acid source and tetraethyl orthosilicate （TEOS） as the silica source. The biomimetic synthesizing was successful. Compared with traditional mesoporous silica support,the 3D hexagonal mesoporous silica had a larger pore diameter （5 -10 nm） and surface area. The adjacent pore channel occurred pore link. Using C16TAB or C18TAB along with YCS as mixed templates,mesoporous silica with a pore diameter of about 9 nm was obtained. Mesoporous silica with different morphologies and large pore diameter also provided excellent support for immobilizing laccase.