TiO_(2)-ACF复合电极制备及光电催化性能研究  

Preparation of TiO_(2)-ACF Composite Electrode and Study on Its Photoelectrocatalytic Performance

作　　者：泰舒芸 包芮于 陈宸 赵越[1] 马福兰 李华[1] TAI Shuyun;BAO Ruiyu;CHEN Chen;ZHAO Yue;MA Fulan;LI Hua(College of Life and Environmental Sciences,Minzu University of China,Beijing 100081,China)

机构地区：[1]中央民族大学生命与环境科学学院环境系,北京100081

出　　处：《水处理技术》2022年第2期85-88,92,共5页Technology of Water Treatment

基　　金：国家自然科学基金重点资助项目(51609271)。

摘　　要：为有效提高粉末TiO_(2)光电催化活性和分离性,以钛酸异丙酯为钛源,十六烷基三甲基溴化铵为模板,通过水热-提拉浸渍法在活性碳毡(active carbon felt,ACF)上负载TiO_(2)制备复合光电极(TiO_(2)-ACF)。利用SEM、XRD、EDS对材料的形貌、晶型结构及元素分布进行表征。通过改变二氧化钛前驱液比例和水热反应时间优化TiO_(2)-ACF制备条件,改变电压探究最佳光电催化降解条件。结果表明,锐钛矿晶型TiO_(2)颗粒粒径约为12.84 nm,分布均匀无明显团簇,似薄膜状包覆在碳毡表面。在模拟太阳光及0.8 V电压条件下,亚甲基蓝(methylene blue,MB)和邻苯二甲酸二甲酯(dimethyl phthalate,DMP)去除效果显著,符合一级反应动力学模型,三次再生循环后仍可保持90%的降解效率。In order to effectively improve the photoelectric catalytic activity and separation of powdered TiO_(2),using isopropyl titanate as the titanium source and cetyltrimethylammonium bromide as the template,the activated carbon felt(ACF)was loaded with TiO_(2) by the hydrothermal method to prepare a composite photoelectrode(TiO_(2)-ACF).The morphology,crystal structure and element distribution of the material were characterized by SEM,XRD,and EDS.The TiO_(2)-ACF preparation conditions were optimized by changing the ratio of the titanium dioxide precursor liquid and the hydrothermal reaction time,and the voltage was changed to explore the optimal photocatalytic degradation conditions.The results showed that the anatase crystal TiO_(2) particles are approximately 12.84nm in size,uniformly distributed without obvious clusters,and were coated on the surface of the carbon felt like a film.Under the conditions of simulated sunlight and 0.8v voltage,the removal effect of methylene blue(MB)and dimethyl phthalate(DMP)is significant,which conforms to the first-order reaction kineticmodel,and can still be used tomaintain 90%degradation efficiency after three regeneration cycles.

关 键 词：二氧化钛 活性碳毡 光电催化 邻苯二甲酸二甲酯 

分 类 号：O643.3[理学—物理化学] O644.1[理学—化学]