分别以钛酸正丁酯和四氯化钛为前驱体,采用溶胶-凝胶法制备不同形貌的纳米TiO2.利用十二烷基苯磺酸钠(DBS)、十二烷基磺酸钠(SDS)、羟丙基甲基纤维素(HPMCS) 控制纳米TiO2形貌,考察了纳米TiO2对甲基橙的光催化活性.XRD分析表明焙烧温度500℃时所得纳米TiO2为锐钛型晶相.UV-vis分析表明加表面活性剂时所制备纳米TiO2吸收发生红移,带隙能下降.不同形貌纳米TiO2具有不同的光催化活性,加SDS时所得立方形纳米TiO2的光催化活性高于其它样品.焙烧温度600℃时纳米TiO2对甲基橙的光催化活性最强.
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