活性炭纤维负载TiO_2催化剂的制备及其电催化性能  

Preparation of TiO_2 Loaded Activated Carbon Fiber and Its Electro-catalytic Activity

作　　者：陆素洁[1] 孙亚兵[1] 赵泽华[1] 边琳[1] 张艳[1] 

机构地区：[1]南京大学环境学院污染控制与资源化研究国家重点实验室,江苏南京210046

出　　处：《化工环保》2014年第6期571-574,共4页Environmental Protection of Chemical Industry

基　　金：江苏省环保科研课题(201305)

摘　　要：采用溶胶-凝胶法制备了活性炭纤维负载TiO2催化剂(TiO2/ACF),并通过SEM和XRD等手段对TiO2/ACF进行了表征。以邻苯二甲酸二甲酯(DMP)为目标降解物,考察了催化材料的电催化活性。实验结果表明:在反应温度为25℃、初始DMP质量浓度为100.0 mg/L、电解质Na2SO4质量浓度为100 mg/L、电流密度为62.5 m A/cm2、电极板间距为4 cm的条件下,经过40 min的降解,DMP质量浓度为1.8 mg/L,DMP去除率为98.2%;Ti O2/ACF在反应过程中可以原位再生,经6次重复使用后仍保持很高的催化活性,对DMP的去除率仍达90%以上。TiO2 loaded activated carbon fiber catalyst （TiOJACF） was prepared by sol-gel-adsorption method and characterized by SEM and XRD. Its electro-catalytic activity was investigated using dimethyl phthalate （DMP） as objective decomposition substance. The experimental results show that： Under the conditions of reaction temperature 25 ℃, initial DMP mass concentration 100 mg/L, electrolyte Na2SO4 mass concentration 100 mg/L, current density 62.5 mA/cm^2, electrode interspace 4 cm, and reaction time 40 min, the DMP mass concentration is reduced to 1.8 mg/L with 98.2% of removal rate; The catalyst can be regenerated in situ, and after 6 times of reuse, it can remain a higher activity with over 90% of DMP removal rate.

关 键 词：活性炭纤维 二氧化钛 电催化 邻苯二甲酸二甲酯 

分 类 号：X52[环境科学与工程—环境工程]