甲酰胺系钛溶胶性能对TiO_2材料微结构的影响  

Effect of properties of titanium sol in pure formamide on microstructure of TiO_2 materials

作　　者：吴守红[1] 景文珩[1] 邢卫红[1] 徐南平[1] 王焕章 

机构地区：[1]南京工业大学膜科学技术研究所省部共建材料化学工程教育部重点实验室,江苏南京210009 [2]广东肇庆星湖生物科技股份有限公司,广东肇庆526040

出　　处：《化学工程》2008年第9期55-57,共3页Chemical Engineering(China)

基　　金：国家863计划项目(2006AA03Z534);国家重大基础研究计划(2003CB615707);国家自然科学基金资助项目(NNSFC;20436030);中国博士后科学基金项目(20060400927);江苏省自然科学基金项目(BK2006566);江苏省博士后科研资助计划项目(0601023B)

摘　　要：稳定的甲酰胺系溶胶的制备是乳液模板法制备高度有序多孔陶瓷材料的前提和基础。系统考察了水含量rw对甲酰胺系钛溶胶性能的影响,同时研究了溶胶性能对TiO2材料的孔径及比表面积等微观结构的影响。结果发现溶胶的粒径随rw和放置时间的增加而增大,黏度随rw的增大而增大。rw越大,制备出的TiO2材料的比表面积越小,而孔径(约8 nm)并不随rw的变化而变化。该研究为多孔TiO2材料的微结构控制提供了实验基础。The preparation of the stable sols in formamide is the basis to obtain ordered porous ceramic materials by emulsion templating. The effects of the volume of water added into titanium sols rw in formamide on the properties of them were researched, and the effects of the properties of them on the material microstructures of TiO2 including pore size and specific surface area were investigated. The results show that particle sizes of the sols increase with increasing rw and deposited time, and the viscosities increase with increasing rw of the sols. The specific surface area of TiO2 ceramics obtained from the sols is smaller while rw is larger. The pore size of the ceramic is similar which is about 8 nanometer while rw is changed. The research provides experimental foundation for controlling the microstructure of porous TiO2 material.

关 键 词：甲酰胺 二氧化钛 溶胶-凝胶法 溶胶性能 微结构 

分 类 号：TB383.4[一般工业技术—材料科学与工程]