以四氯化钛为原料采用溶胶-凝胶法制备了负载型TiO2/硅藻土复合光催化剂,并通过XRD,IR,SEM等手段对样品进行了表征.实验中分别以300 W高压汞灯和太阳光为光源,研究了硅藻土载体上TiO2负载量不同对甲基橙溶液光催化氧化效果的影响.实验结果表明:复合光催化剂的催化性能随着TiO2负载量增大先提高,而后有所下降,其中以1 g硅藻土与1.8 ml四氯化钛制备的TiO2/硅藻土复合催化剂光催化活性最高.
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