| 磁载光催化剂Fe3O4/C/TiO2的制备及对三氯苯酚的降解 |
| Preparation of Magnetical Photocatalyst Fe3O4/C/TiO2 for Degradation of 2,4,6-Trichlorophenol in Aqueous Solution |
| 作者 | 单位 | E-mail | | 杨静 | Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210097, China
State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry & Chemical Engineering and Center of Materials Analysis, Nanjing University, Nanjing 210093, China | | | 崔世海 | Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210097, China | | | 练鸿振 | State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry & Chemical Engineering and Center of Materials Analysis, Nanjing University, Nanjing 210093, China | hzlian@nju.edu.cn |
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| 摘要: 以FeCl3为铁源,葡萄糖为碳源,钛酸四丁酯为钛源,采用水热法制备了磁载光催化剂Fe3O4/C/TiO2,用TEM、EDX、VSM、XRD和IR对Fe3O4/C/TiO2的粒径、形貌和物相等进行了表征。研究了该催化剂对三氯苯酚的降解性能,探讨了其重复使用的可能性,用荧光光谱法推测了可能的反应机理。结果表明该材料结合了光催化与可再生的优点,1g·L-1Fe3O4/C/TiO2在18W紫外灯下,50min内可将三氯苯酚降解97.9%以上,6次循环使用后降解率仍保持在95.1%,降解过程中有羟基自由基生成。 |
| 关键词: 磁载光催化剂 降解 2,4,6-三氯苯酚(TCP) |
| 基金项目: 国家重点基础研究发展计划(973计划)(No.2009CB421601,2011CB911003);国家自然科学基金(No.21275069,21177061);江苏省高校自然科学基金(No.11KJB150008)江苏高校优势学科建设工程资助项目。 |
| Abstract: Aseparable magnetic photocatalyst (Fe3O4/C/TiO2) was prepared by a hydrothermal reaction with the reaction of FeCl3, glucose and tetrabutyltitanate. The catalyst Fe3O4/C/TiO2 was characterized in terms of particle size, morphology and phase by transmission electron microscopy (TEM), energy dispersive X-ray (EDX) spectrometry, vibration sample magnetometry (VSM), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The catalytic activities and mechanism were evaluated by degradation of 2,4,6-trichlorophenol (TCP) aqueous solution. The reaction mechanism was investigated by the fluorescence technique. The results indicate that the catalyst has high degradation abilities and can be easily separated and reused by an external magnetic field. TCPcan be effectively degraded by 97.9% in the use of 1 g·L-1 Fe3O4/C/TiO2 under 18 W UVlight within 50 min. Adegradation rate of 95.1% can be maintained after 6 cycles. The hydroxyl radicals (OH) have been detected in the reaction. |
| Keywords: magnetic photocatalyst degradation 2,4,6-trichlorophenol (TCP) |
| 投稿时间：2013-03-27 修订日期：2013-05-17 |
| 摘要点击次数: 2039 |
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| 杨静,崔世海,练鸿振.磁载光催化剂Fe3O4/C/TiO2的制备及对三氯苯酚的降解[J].无机化学学报,2013,29(10):2043-2048. |
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