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室温下以Gemini表面活性剂为模板剂合成介孔TiO2
Synthesis of Mesoporous TiO2 Using Gemini Surfactant at Room Temperature
【摘要】 采用双子型季铵盐类阳离子表面活性剂溴代Gemini1231做模板剂,用溶胶-凝胶(sol-gel)法在室温合成了介孔TiO2材料,用TG-DTA、XRD、N2吸附-脱附、TEM等进行表征.结果表明,用该模板剂合成的介孔TiO2材料,合适的煅烧温度为480℃,其比表面积可达383.8m2/g,最可几孔径为5.8nm,广角XRD测试发现较强的锐钛矿型特征峰,而未发现金红石相特征衍射峰,说明本实验制备的介孔TiO2为稳定锐钛矿型.通过小角X射线衍射分析发现,产物具有规整有序的介孔结构.
【Abstract】 Using Gemini231 quaternary ammonium salts cationic surfactant as template,mesoporous titanium dioxide material was synthesized by sol-gel method at room temperature.The synthesized samples were investigated by thermogravimetic-differential thermal analysis,X-ray diffraction,nitrogen adsorption-desorption and transmission electron microscope(TEM) techniques.The results show that the obtained mesoporous TiO2 calcined at 480℃ have a high specific surface area up to 383.8m2·g-1,and a mean pore size of about 5.8nm in diameter,and crystallized anatase framework.No rutile phase is found.Small-angle X-ray diffraction analysis shows that the sample has an ordered mesoporous structure.
- 【文献出处】 无机材料学报 ,Journal of Inorganic Materials , 编辑部邮箱 ,2009年01期
- 【分类号】O614.411
- 【被引频次】11
- 【下载频次】455