以L-2-甲基丁醇为结构助剂制备螺旋介孔亚乙烯基氧化硅

Preparation of helical mesoporous ethenylene-silica nanofibers using L-2-methyl-1-butanol as co-structure-directing agent

用十六烷基三甲基溴化铵(CTAB)作模板剂,L-2-甲基丁醇(MB)为结构助剂,经溶胶-凝胶过程,制备介孔1,2-亚乙烯基氧化硅纳米结构.使用透射电镜和冷场发射扫描电镜,表征了多种反应条件下样品的形貌.结果表明,通过调节MB/CTAB的摩尔量比为1∶1,可以得到螺旋介孔1,2-亚乙烯基氧化硅纳米纤维,其长度为数百纳米,孔径为2.6nm.

Helical mesoporous ethenylene-silica nanofibers was prepared by sol-gel method using cetyltri-methyl ammonium bromide （CTAB） as template and L-2-methyl-l-butanol（MB）as a co-structure-direc- ting agent. The morphologies and pore architectures of the mesoporous ethenylene-silicas were charac- terized using transmission electron microscopy （TEM） and field emitted scanning electron microscopy （FESEM）. By controlling the MB/CTAB molar ratio, mesoporous helical ethenylene-silica nanofibres were obtained, which were hundreds nanometers in length and 2.6 nm in inner-pore-diameter.