TiO_2/AC复合催化剂光催化降解布洛芬  

Photocatalytic Degradation of Ibuprofen by TiO_2/AC Composite Catalyst

作　　者：闫春燕[1,2] 伊文涛[1,2] 李法强[3] 

机构地区：[1]枣庄学院化学化工与材料科学学院,山东枣庄277160 [2]鲁南煤化工工程技术研究院,山东枣庄277160 [3]中国科学院青海盐湖研究所,青海西宁810008

出　　处：《化工环保》2014年第3期281-286,共6页Environmental Protection of Chemical Industry

基　　金：山东省科技发展计划项目(2012GSF11703);山东省自然科学基金项目(ZR2010BL007);国家自然科学基金项目(21001111)

摘　　要：以钛酸丁酯为钛源、粉末活性炭为载体,采用溶胶-凝胶法制备了活性炭负载型二氧化钛(TiO2/AC)复合催化剂,并运用XRD和FE-SEM技术对其进行了表征。在紫外光条件下,研究了TiO2/AC光催化降解布洛芬的影响因素。研究结果表明:布洛芬质量浓度为40 mg/L时,在室温、焙烧温度500℃、TiO2/AC催化剂加入量2.0 g/L、溶液pH 3.0的最佳条件下,光催化降解180 min时布洛芬的降解率达85.6%;阴离子Cl-和NO3-对布洛芬的降解有强烈的抑制作用;阳离子Fe2+和Cu2+及氧化性物种H2O2对布洛芬的降解均呈现两面性,随物种浓度的增加,布洛芬的降解率先增大后减小;该催化剂具有良好的稳定性,可多次重复使用而不失活。The activated carbon（AC） supported TiO2 photocatalyst（TiO2/AC） was prepared by sol-gel method using tetrabutyl titanate as titanium source and powder activated carbon as carrier. The products were characterized by XRD and FE-SEM. The factors affecting the photocatalytic degradation of ibuprofen by the TiO2/AC catalyst under UV light radiation were studied. The results show that： When the ibuprofen mass concentration is 40 mg/L, the ibuprofen removal rate is 85.6% under the optimum conditions of room temperature, calcinations temperature 500 ℃, TiO2/AC catalyst dosage 2.0 g/L, solution pH 3.0 and reaction time 180 min; The anions such as Cl- and NO3- can strongly inhibit the degradation of ibuprofen; While Fe2＋, Cu2＋ and H2O2 show dual character on ibuprofen degradation, with the increasing of the concentrations of these substances, the ibuprofen removal rate increased first and then decreased; This photocatalyst has a good stability, and can be reused many times without inactivation.

关 键 词：布洛芬 二氧化钛 活性炭 光催化降解 

分 类 号：X523[环境科学与工程—环境工程]