不同结构的Fe3O4TiO2Graphene三元复合材料的制备及光催化性能的开题报告VIP专享

精品文档---下载后可任意编辑不同结构的 Fe3O4TiO2Graphene 三元复合材料的制备及光催化性能的开题报告【摘要】本文讨论了不同结构的 Fe3O4TiO2Graphene 三元复合材料的制备及光催化性能。通过简单的水热法制备出纳米 Fe3O4 和 TiO2 粉末，并将其与石墨烯（Graphene）混合制备成 Fe3O4TiO2Graphene 三元复合材料。利用扫描电子显微镜（SEM）、透射电子显微镜（TEM）、X射线衍射（XRD）和傅里叶红外光谱（FTIR）对复合材料进行了表征。讨论了不同结构的复合材料对甲醛的光降解性能。实验结果表明，将纳米 Fe3O4 和 TiO2 与石墨烯混合后制备的Fe3O4TiO2Graphene 三元复合材料，具有较高的光催化降解性能。其中，以 Fe3O4TiO2@Graphene 为前驱体制备的复合材料，具有最好的光催化性能。在可见光照射下，其甲醛的降解率为 86%。同时，讨论表明，复合材料的光催化活性与其结构、化学组成以及光捕获能力密切相关。【关键词】Fe3O4; TiO2; Graphene; 三元复合材料; 光催化性能【Abstract】In this paper, we study the preparation and photocatalytic properties of Fe3O4TiO2Graphene ternary composite materials with different structures. Nanoscale Fe3O4 and TiO2 powders are prepared by a simple hydrothermal method and mixed with graphene to prepare Fe3O4TiO2Graphene ternary composite materials. The composite materials were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR). The photocatalytic degradation of formaldehyde by different structures of composite materials was studied.The experimental results show that Fe3O4TiO2Graphene ternary composite materials prepared by mixing nanoscale Fe3O4 and TiO2 with graphene have high photocatalytic degradation performance. Among them, Fe3O4TiO2@Graphene composite prepared as a precursor has the best photocatalytic performance. Under visible light irradiation, its formaldehyde degradation rate is 86%. At the same time, research shows that the photocatalytic activity of 精品文档---下载后可任意编辑composite materials is closely related to their structure, chemical composition, and light capture capacity.【Keywords】Fe3O4; TiO2; Graphene; ternary composite material; photocatalytic performance