采用溶胶-凝胶法,以硝酸镧和钛酸丁酯为原料,以活性炭纤维为载体,制备了镧掺杂TiO2/ACF复合材料,通过紫外灯照射,对甲醛气体进行光催化降解,考察材料的光催化活性.结果表明:镧的掺杂能够提高TiO2/ACF复合材料的光催化活性.当焙烧温度为400℃,镧的掺杂量为2％(摩尔分数)时,材料的光催化活性达到最佳效果.
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