TiO2光催化剂的制备及可见光催化性能研究

Study on TiO2 Photocatalyst and Visible Light Catalytic Performance

半导体光催化技术被认为是解决当前面临的能源危机和环境问题的理想途径,其主要是通过光催化剂,利用太阳能对污染物进行降解、有机物合成以及太阳能电池等应用。TiO2具有高活性、稳定性强和安全无毒等特点而被作为一种常用的光催化剂。本文以石墨烯和TiO2为原材料,利用溶剂热还原石墨烯的方法,进行复合光催化剂的制备,并通过紫外可见漫反射光谱和X-射线衍射两个测试手段对制备的复合光催化剂进行了表征,结果显示,制备的复合光催化剂具有在可见光下就可以进行光催化的性能,弥补了单独TiO2作催化剂时只能利用紫外线的缺点。

Semiconductor photocatalysis technology is considered to be an ideal way to solve the current energy crisis and environmental problems.It mainly uses photocatalysts to use solar energy to degrade pollutants,organic matter synthesis,and solar cell applications.TiO2 has the characteristics of high activity,strong stability,safety and non-toxicity,and is used as a commonly used photocatalyst.In this paper,graphene and TiO2 were used as raw materials,and the method of solvothermal reduction of graphene was used to prepare the composite photocatalyst.The composite photocatalyst of vegetation is carried out by two test methods of ultraviolet-visible diffuse reflection spectroscopy and X-ray diffraction.Characterization,the results show that the prepared composite photocatalyst has the performance of being able to perform photocatalysis under visible light,making up for the shortcomings that only ultraviolet light can be used when TiO2 is used alone.