Fe_3O_4@TiO_2壳核结构微球的制备及其光催化性能  

Preparation and Photocatalytic Performance of Fe_3O_4@TiO_2 Microsphere with Core-shell Structure

作　　者：吴正[1,2] 王斌[2] 朱光[2] 张莉[2] 

机构地区：[1]安徽理工大学化学工程学院,安徽淮南232001 [2]宿州学院自旋电子与纳米材料安徽省重点实验室,安徽宿州234000

出　　处：《宿州学院学报》2015年第1期79-81,共3页Journal of Suzhou University

基　　金：国家自然科学基金"无机纳米微粒的层层自组装薄膜的制备及应用研究"(20871089);"高灵敏高选择磁性核壳纳米SERS探针的构筑及其对农药残留的检测研究"(21271136);宿州学院创新团队建设计划(2013kytd02)

摘　　要：以水热法合成的Fe3O4为磁载体,合成了Fe3O4@TiO2磁性光催化剂。使用透射电子显微镜(TEM)、X射线衍射仪(XRD)、紫外-可见光谱(UV-vis)等对样品进行分析表征。透射电子显微镜观察表明,TiO2均匀地包覆在纳米Fe3O4颗粒表面,形成核壳结构。以Fe3O4@TiO2为光催化剂,降解亚甲基蓝(MB)水溶液,分析了Fe3O4@TiO2的光催化性能,结果表明:紫外光照射下,MB水溶液在15min后降解率约为93%,Fe3O4@TiO2重复利用5次后,MB的降解率仍能达到87%。The magnetic photocatalyst Fe3O4@TiO2 was prepared by the hydrothermal reaction with magnetic Fe304 which was obtained by hydrothermal reaction. The as-prepared samples were characterized by transmistures showed that Fe304 was evenly coated per[ormance was evaluated by degradation by TiO2 nanoparticle to form a core-shell structure. Photocata of methylene blue （MB） solution under UV light irradiation piclytic over Fe3O4@TiO2. Results show that the degradation rate of MB solution under UV light irradiation in 15 min is about 93% ,and the degradation rate is still able to reach 87% after recycling 5 times.

关 键 词：Fe3O4@TiO2 光降解 亚甲基蓝 

分 类 号：O643.32[理学—物理化学]