摘要
基于SO42-对TiO2超强酸化改性制备了SO42-/TiO2催化剂,以茜素红为目标物试验研究了该催化剂的催化降解性能,并考察了降解条件等因素对脱色率的影响.结果表明,SO42-/TiO2具有较强催化降解性能及一定的光催化活性,降解过程中SO42-流失是催化剂失活的主要原因.在pH=7,催化剂加入量为2.5g/L,起始浓度为140mg/L,太阳光等优化工艺条件下降解效果最好,脱色率达到92%.
The catalyst of SO42-/TiO2 was prepared with SO42- superacidification modifying. Properties of catalytic degradation were investigated by alizarin used as objective compound, and the influence of the factors enchase degradation conditions on the decolorization rate were explored. The results showed that SO42-/TiO2 had better catalytic degradation activity and definite photocatalytic activity. In degradation process, lose of SO42- was the main cause of deactivation of the catalyst. The decolouration rate reached the best effect of 92% on the superior technical conditions (pH=7, original concentration 140mg/L and 2.5g/L catalyst added and sun light).
出处
《中国环境科学》
EI
CAS
CSSCI
CSCD
北大核心
2003年第5期535-538,共4页
China Environmental Science
基金
安徽省教育厅自然科学基金资助项目(2003kj051)
