非平面胶体晶体的制备及表征  

Preparation and characterization of colloidal crystals on non-planar substrate

作　　者：伍媛婷[1] 王秀峰[1] 胡超超[1] 杨阳[1] 刘泽辉[1] 

机构地区：[1]陕西科技大学材料科学与工程学院,陕西西安710021

出　　处：《陕西科技大学学报（自然科学版）》2013年第4期38-41,共4页Journal of Shaanxi University of Science & Technology

基　　金：陕西省自然科学基金项目(2010JQ6006);陕西科技大学博士科研启动基金项目(BJ13-03);陕西科技大学资助申报国家基金项目(2012SB010);大学生创新创业训练计划项目(XJ201201003)

摘　　要：利用平面和非平面基底,采用垂直沉积法制备了SiO2胶体晶体,采用X射线衍射分析仪(XRD)对颗粒的晶型进行表征,通过扫描电子显微镜(SEM)对粉体的形貌及胶体晶体的结构和排列方式进行测试分析.研究曲面的内径大小及双曲面基底的间距大小对结构的影响规律,对曲面胶体晶体的生长过程进行探讨.结果表明曲面基底有利于胶体晶体结构的有序生长,在适当的双曲面基底间距下,双曲面上所生长的胶体晶体具有更加紧密的结构.Colloidal crystals were fabricated by the vertical deposition method on planar and non-planar substrates. The crystal form was characterized by X-ray diffraction （XRD）. The micromorphology of silica powders and colloidal crystals was characterized by scanning electron microscope （SEM）. The effects of inner diameter of non-planar substrates and spacing between two substrates on the structure of colloidal crystals were discussed. The formation of colloidal crystals on non-planar substrates was studied. The results show that more ordered structure can be obtained with the use of non-planar substrates. With proper spacing between two substrates, the more close-packed structure can be synthesized.

关 键 词：胶体晶体 二氧化硅 自组装 非平面 

分 类 号：TQ127.2[化学工程—无机化工]