TiO_2/AC复合材料的制备及其对孔雀石绿的光催化降解  

Preparation of TiO_2/AC composite photocatalyst and its degradation performance for malachite green

作　　者：董社英[1] 田菲[1] 潘晓峰[1] 田安祥[1] 马彩莲[1] 黄廷林[2] 

机构地区：[1]西安建筑科技大学理学院,陕西西安710055 [2]西安建筑科技大学环境与市政工程学院,陕西西安710055

出　　处：《现代化工》2012年第4期55-58,60,共5页Modern Chemical Industry

基　　金：国家自然科学基金重点项目(50830303);长江学者与创新团队发展计划(IRT0853);陕西省教育厅专项研究基金(11JK0570)

摘　　要：以活性炭为载体,用溶胶-凝胶法制备了不同TiO2负载量的TiO2/AC复合光催化剂,运用X射线衍射仪(XRD)、扫描电子显微镜(SEM)和红外光谱仪(FT-IR)对该催化剂进行表征。探讨了TiO2的负载量、光催化剂质量浓度、溶液的初始质量浓度等因素对孔雀石绿降解效率的影响,并对催化剂进行了回收再生实验。结果表明,TiO2负载量为30%时的复合催化剂为锐钛矿相,对孔雀石绿的降解具有良好的光催化活性,且回收7次重复使用降解效果仍在95%以上。TiOJAC photocatalyst with different loading contents is prepared by sol-gel method with activated carbon （AC） as the carrier and characterized by XRD, SEM and FT-1R. The effects of the amount of loaded TiO2, the amount of light catalyst and the initial concentration of the dye solution on degradation rate of Malachite green （MG） are investigated. The results show that 30% of the amount of TiO2 loaded on activated carbon have possessed not only favorable and stable photocatalytic activity but also considerable recycling value for MG. Degradation effect is still more than 95% after seven recycle.

关 键 词：TIO2/AC 复合材料 光催化 降解 孔雀石绿 

分 类 号：O643.3[理学—物理化学]