石墨烯/Fe_3O_4/TiO_2磁性纳米复合材料的光催化性能研究

Study on the Photocatalytic Performance of Graphene/Fe_3O_4/TiO_2 Magnetic Nanocomposites

利用石墨烯纳米(GNs)片作为载体,将钛酸四正丁酯包裹Fe_3O_4纳米粒子的微乳液通过搅拌和超声负载于其表面或镶嵌于其二维结构的片层间,制备GNs/Fe_3O_4/TiO_2磁性复合光催化材料。通过FTIR、SEM、TEM、EDX、XRD、VSM等手段对样品进行了表征,并对其光催化机理进行了分析。测试结果表明,TiO_2含量对复合材料的光催化性能有显著影响,对对硝基苯酚和罗丹明B的光催化降解率最高分别可达96.0%和98.3%。

Micro-emulsion solution of TNBT coated with Fe3 O4 nanoparticles was stirred and loaded on the surface of graphene（GNs） carrier, and further embedded in its lamellae by means of ultrasonic, forming a kind of Graphene/Fe3 O4/TIO2 photocatalytic nanocomposites. The structure, morphology and properties of the composites were characterized by scanning FTIR, SEM, EDM, TEM, XRD, VSM. The results show that the content of TiO2 has a significant effect on the photocatalytic properties of the composites. The photocatalytic degradation rate to p-nitrophenol and Rhodamine B were 96% and 98.3%, respectively. The photocatalytic mechanism of the material was analyzed according to its structure and properties.