由钛铁矿制备磁性Fe3O4/TiO2复合物及其在光催化降解有机污染物中的应用
Preparation of Magnetic Fe3O4/TiO2 Composites from Ilmenite and Its Application in Photocatalytic Degradation of Organic Pollutants
DOI: 10.12677/JAPC.2017.61002, PDF, HTML, XML,  被引量 下载: 1,970  浏览: 3,539  国家自然科学基金支持
作者: 马桑桑, 俞戈凤, 张雨婷, 苏 琦, 李 雷：嘉兴学院生物与化学工程学院，浙江 嘉兴
关键词: 钛铁矿；TiO2；Fe3O4；磁性；光催化；Ilmenite； TiO2； Fe3O4； Magnetic； Photocatalysis
摘要: 以钛铁矿为原料，分离获得二氧化钛和Fe单质，并采用水热法制备磁性Fe3O4/TiO2光催化材料。采用 XRD、SEM、IR、氮气物理吸附和紫外可见漫反射等手段表征了Fe3O4/TiO2复合物的结构，并考察其降解罗丹明B溶液的光催化性能。结果表明，磁性Fe3O4/TiO2光催化材料在紫外光和可见光条件下表现出较好的光催化性能，并表现出良好的稳定性。故该制备方法既能有效提高钛铁矿的利用率，也可获得利于回收利用的磁性光催化剂。
Abstract: Ilmenite was used as source to prepare TiO2 and Fe, which were used to prepare magnetic Fe3O4/TiO2 photocatalysts via hydrothermal method. Fe3O4/TiO2 composites were characterized by XRD, SEM, IR, N2-physisorption and UV-Vis diffuse reflectance spectra. The results indicate that the magnetic Fe3O4/TiO2 photocatalysts present a high photocatalytic activity and stability for degradation of RhB dye under UV-light and visible light. Therefore, the preparation method not only promotes the utilization of ilmenite, but also directly prepares magnetic and recyclable photocatalysts.
文章引用：马桑桑, 俞戈凤, 张雨婷, 苏琦, 李雷. 由钛铁矿制备磁性Fe3O4/TiO2复合物及其在光催化降解有机污染物中的应用[J]. 物理化学进展, 2017, 6(1): 9-16. https://doi.org/10.12677/JAPC.2017.61002

参考文献

[1] 刘守新, 刘鸿. 光催化及光电催化基础与应用[M]. 城市: 化学工业出版社, 2007: 1-3.
[2] 张剑琦, 李莉, 柳迪, 等. 3DOM TiO2-ZrO2复合材料制备与多模式光催化降解有机污染物[J]. 分子催化, 2015, 29(4): 348-358.
[3] Fujishima, A., Rao, T.N. and Tryk, D.A. (2000) Titanium Dioxide Photocatalysis. Journal of Photochemistry & Photobiology C Photochemistry Reviews, 1, 1-21. https://doi.org/10.1016/S1389-5567(00)00002-2
[4] 叶少博, 卫芝贤. 磁性光催化剂去除有机物的研究进展[J]. 化工新型材料, 2013, 41(10): 187-189.
[5] Xin, T., Ma, M., Zhang, H., et al. (2014) A Facile Approach for the Synthesis of Magnetic Separable Fe3O4@TiO2, Core-Shell Nanocomposites as Highly Recyclable Photocatalysts. Applied Surface Science, 288, 51-59. https://doi.org/10.1016/j.apsusc.2013.09.108
[6] Liu, H., Zeng, P., Ji, S., et al. (2010) Synthesis of TiO2/SiO2@Fe3O4 Magnetic Microspheres and Their Properties of Photocatalytic Degradation Dyestuff. 6th International Conference on Environmental Catalysis, 229-229.
[7] He, Q., Zhang, Z., Xiong, J., et al. (2008) A Novel Biomaterial—Fe3O4:TiO2, Core-Shell Nano Particle with Magnetic Performance and High Visible Light Photocatalytic Activity. Optical Materials, 31, 380-384.
[8] Rao, B.P. (2014) Fe3O4/TiO2 Core/Shell Nanocubes: Single-Batch Surfactantless Synthesis, Characterization and Efficient Catalysts for Methylene Blue Degradation. Ceramics International, 40, 11177-11186. https://doi.org/10.1016/j.ceramint.2014.03.148
[9] Li, C., Younesi, R., Cai, Y., et al. (2014) Photocatalytic and Antibacterial Properties of Au-Decorated Fe3O4@mTiO2, Core-Shell Microspheres. Applied Catalysis B Environmental, 156-157, 314-322.
[10] 李新海, 伍凌, 王志兴, 等. 综合利用钛铁矿制备二氧化钛、钛酸锂和磷酸铁锂[J]. 中国有色金属学报, 2011, 21(10): 2697-2708.
[11] 张明. 用攀枝花钛铁矿制备球形二氧化钛[J]. 湿法冶金, 2013, 32(5): 336-339.
[12] 张茜芸, 仲兆平, 姚杰, 等. 由钛铁矿制备SCR催化剂载TiO2的优化试验[J]. 钢铁钒钛, 2014, 35(2): 26-30.
[13] 郑琦, 陈恒初, 王靖宇, 等. 铁掺杂纳米二氧化钛溶胶的制备及性能研究[J]. 环境科学与技术, 2007, 30(4): 14-15.
[14] Jin, H., Wen, L.I., Xiang, J., et al. (2001) Nanometer Particles of Fe3+/TiO2/SiO2 Complex: Synthesis and Usefulness in Photocatalytic Degradation of Nitrite. Chinese Journal of Applied Chemistry, 18, 636-639.
[15] Sivakumar, S., Pillai, P.K., Mukundan, P., et al. (2002) Sol-Gel Synthesis of Nanosized Anatase from Titanyl Sulfate. Materials Letters, 57, 330-335. https://doi.org/10.1016/S0167-577X(02)00786-3