TiO_2/ACF光催化降解甲基橙废水性能研究

Study on photocatalytic activity of TiO_2-loaded activated carbon fiber for degradation of methyl orange

以活性炭纤维(ACF)为载体,采用溶胶-凝胶法制备活性炭纤维负载二氧化钛复合材料(TiO_2/ACF)。以甲基橙为模型化合物,研究TiO_2/ACF对染料废水的光催化降解活性,考察光照时间、溶液初始浓度、pH值、光强、重复使用次数等因素对甲基橙溶液去除率的影响。结果表明,TiO_2/ACF对甲基橙废水具有较好的光催化降解活性和重复利用性,ACF吸附和TiO_2光催化产生了协同作用。

TiO2-1oaded activated carbon fiber was prepared by the sol-gel method. The photocatalytic activity of TiO2/ACF was evaluated by the photocatalytic degradation of methyl orange. The effects of various factors such as the light time,initial concentration, p H value of solution,light intensity and reuse times were studied. The results indicated that TiO2/ACF had good photocatalytic activity of degradation for methyl orange and can be repeated used for several times. The reason was ascribed to the synergy of absorption of ACF and photocatalysis of TiO2.