| TiO2/PANI/Fe3O4光催化磁流体的全流态合成及其光催化和磁回收性能 |
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| 引用本文： | 谭光杰, 任学昌, 王拯, 刘鹏宇, 常青. TiO2/PANI/Fe3O4光催化磁流体的全流态合成及其光催化和磁回收性能[J]. 环境工程学报, 2017, 11(4): 2313-2320. doi: 10.12030/j.cjee.201602113 |
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| 作者姓名： | 谭光杰 任学昌 王拯 刘鹏宇 常青 |
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| 作者单位： | 1.兰州交通大学环境与市政工程学院, 兰州 730070 |
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| 基金项目： | 国家自然科学基金资助项目（51268026）. |
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| 摘 要： | 以Fe3O4磁流体为磁核，经微乳液聚合包覆聚苯胺后制成催化剂载体，再采用低温水热法合成TiO2并使其负载于载体表面，不经过烘干、研磨等步骤，在全程流态的情况下制备出具有复合结构的TiO2/PANI/Fe3O4光催化磁流体。用X射线衍射仪（XRD）、透射电子显微镜（TEM）、扫描电子显微镜（SEM）、傅里叶红外分光光度计（FT-IR）、振动样品磁强计（VSM）对样品的物相组成、形貌、表面性质和磁学性质进行了表征。以苯酚为模拟污染物，评价其光催化活性；通过自制的磁回收装置，考察其磁回收特性。结果表明：在表面活性剂以及微乳液聚合法的作用下，合成反应过程中的团聚现象得到有效的抑制。在不经过烘干、研磨的条件下，制备出了颗粒均匀、催化活性和磁回收性能良好的TiO2/PANI/Fe3O4光催化磁流体。不仅简化了合成的步骤，同时也避免了研磨等物理作用对催化剂结构的破坏，为光催化磁流体的合成提供了新的思路。
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| 关 键 词： | TiO2 光催化磁流体 全程流态 光催化活性 磁回收 |
| 收稿时间： | 2016-04-05 |
Synthesis of TiO2/PANI/Fe3O4 photocatalytic magnetic fluid without drying process and its photocatalytic activity and magnetic recovery |
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| TAN Guangjie, REN Xuechang, WANG Zheng, LIU Pengyu, CHANG Qing. Synthesis of TiO2/PANI/Fe3O4 photocatalytic magnetic fluid without drying process and its photocatalytic activity and magnetic recovery[J]. Chinese Journal of Environmental Engineering, 2017, 11(4): 2313-2320. doi: 10.12030/j.cjee.201602113 |
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| Authors: | TAN Guangjie REN Xuechang WANG Zheng LIU Pengyu CHANG Qing |
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| Affiliation: | 1.School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China |
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| Abstract: | A composite magnetic photocatalytic titania (photoactive shell)/polyaniline (intermediate layer)/ferroferric oxide (magnetic core) fluid was prepared by microemulsion polymerization and hydrothermal methods without the requirement for a drying or grinding process. The prepared composite particles were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) spectroscopy, and vibrating sample magnetometry (VSM). The photocatalytic activity of the magnetic fluid was evaluated in the photocatalytic degradation of phenol, and the magnetic recovery rate was studied using in-house recovery equipment. The results indicated that the photocatalytic activity and magnetic recovery of the TiO2/PANI/Fe3O4 photocatalytic magnetic fluid were acceptable, and that agglomeration was avoided using our microemulsion polymerization technique. This novel new method not only simplified the synthetic route to a photocatalytic magnetic fluid, but also avoided the damaging drying and grinding steps reported in previous preparations. |
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| Keywords: | titanium doxide photocatalytic magnetic fluid whole process in solution photocatalytic activity magnetic recovery |
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