【作者】 胡曰博； 何文； 周大利； 杨为中； 熊育飞； 尹光福；

【Author】 HU Yue-Bo;He Wen;Zhou Da-Li;Yang Weizhong;Xiong Yufei;Yin Guangfu;College of Materials Science and Engineering, Sichuan University;Department of Materials Science and Engineering , Shandong Institute of Light Industry;

【机构】 四川大学无机非金属材料系； 山东轻工业学院材料科学与工程系；

【摘要】 非硅基介孔材料是近来新兴起的一个研究热点,通过添加复合模板剂吐温（Tween）和司班（Span）,以溶胶-凝胶（sol-gel）工艺制备了介孔二氧化钛（Ti O₂）。采用透射电境（TEM）、环境扫描电境（ESEM）、X衍射（XRD）等手段对介孔材料的显微形貌及晶型结构进行了表征,研究了不同抑制剂和热处理温度对材料结构的影响。结果表明,以硝酸作为抑制剂,当p H值为4时,可以很好的抑制钛酸四正丁酯（TBOT）的水解,有效延缓凝胶化过程;通过控制焙烧温度,可制备所需晶型并具有规则孔隙的介孔二氧化钛。更多还原

【Abstract】 Non-silicon based mesoporous materials has become a heated research topic in recent years. Using a composite surfactant template（Tween and Span）, mesoporous Ti O₂ was synthesized through sol-gel method. The micro-morphology and crystalline structure of the mesoporous Ti O₂ were characterized by TEM, ESEM and XRD. The influence of different depressors and heat-treating temperatures on the structure was investigated. Results indicate that: the hydrolyzation of TBOT is well restrained, and the process of gelation is prolonged when using HNO₃ as depressor and p H value is 4. By controlling calcining temperature, mesoporous Ti O₂ with expected crystalline structure and regular pores could be obtained.更多还原