晶种法制备3D-TNAs@NH2-MIL-125复合电极及其光电催化性能研究  

Preparation of 3D-TNAs@NH 2-MIL-125 composite electrodes by crystal seed method and its photoelectrocatalytic performance

作　　者：赵越[1] 包芮于 谢娴 李华[1] ZHAO Yue;BAO Rui-yu;XIE Xian;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：《应用化工》2023年第4期995-998,1004,共5页Applied Chemical Industry

基　　金：国家自然科学基金(51609271);中央民族大学青年学术团队引领计划项目(2022QNYL25)。

摘　　要：以钛丝网为基底制备三维二氧化钛纳米管阵列电极(3D-TNAs),之后通过晶种滴加法将NH2-MIL-125与三维二氧化钛纳米管阵列复合,制备3D-TNAs@NH2-MIL-125复合电极材料。通过调节晶种时间,研究不同制备时间对复合电极表面形貌、物理化学性质及光电化学性能的影响。结果表明,通过晶种滴加法合成的3D-TNAs@NH2-MIL-125复合电极具有优异的光电化学性能,其中晶种时间为6 h的复合电极综合性能最好,在模拟太阳光及0.7 V外加偏压的条件下,反应时间为150 min时对亚甲基蓝的降解率可达97.8%。In order to effectively improve the photocatalytic performance of titanium dioxide,NH_(2)-MIL-125 was combined with titanium dioxide nanotubes by seed drop addition to prepare 3D-TNAs@NH_(2)-MIL-125 composite electrode.The effect of different seed time on the performance of composite electrode was studied.The morphology,crystal structure and photoelectric properties of the materials were characterized by SEM,XRD and photocurrent.The results show that 3D-TNAs@NH_(2)-MIL-125 prepared by seed drop addition has excellent photoelectric properties,and NH_(2)-MIL-125 with seed time of 6 h is in the best loading state on 3D-TNAs.Under the condition of simulated sunlight and 0.7 V voltage,the removal efficiency of methylene blue reached 97.8%after 150 min.

关 键 词：三维二氧化钛纳米管阵列 NH2-MIL-125 晶种滴加 光电催化 

分 类 号：TQ09[化学工程] X703[环境科学与工程—环境工程]