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以高炉渣纤维(BFSF)为载体,采用溶胶凝胶法,在BFSF表面负载TiO2,制备BFSF负载TiO2(TiO2/BFSF)光催化材料.利用差热-热重(TG-DTA)、X射线衍射仪(XRD)、场发射扫描电镜(SEM)及能谱元素分析(EDS)等近代测试方法对TiO2/BFSF的显微结构和相组成进行了表征.以模拟印染废水的亚甲基蓝(MB)的降解,评价样品的光催化活性.实验结果表明:TiO2溶胶负载3次,煅烧温度为450℃时,TiO2/BFSF光催化材料表面负载了一层均匀密实的锐钛矿型TiO2,当紫外光照射180 min时,亚甲基蓝的降解率达到92.5%.循环利用TiO2/BFSF光催化材料4次,亚甲基蓝的降解率依然能够达到63%.

参考文献

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