TiO2/AC复合催化剂光催化降解布洛芬

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。

Photocatalytic Degradation of Ibuprofen by TiO2/AC Composite Catalyst

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.