Green Preparation And Photocatalytic Properties Of 3D TiO₂

Due to its unique properties and potential application prospects,3D nanostructures have been highly valued by many researchers in recent years.Researchers have prepared a variety of well-aligned 3D nanomaterials by using ZnO、TiO2、CuO and other excellent performing metals or metal oxides.TiO2 is a chemically stable and functionally diverse semiconductor compound,which has been extensively studied in the field of photocatalysis due to its advantages such as low cost and high activity under the drive of ultraviolet light.In this paper,TiO2 particles with different morphologies were prepared under normal temperature and pressure under the reaction environment of aloe extract,and on this basis,three-dimensional TiO2 nanoparticles with good crystallization status were prepared by combining hydrothermal and calcining crystallization methods.The photocatalytic properties of three-dimensional TiO2 were studied,and the mechanism of its photocatalytic degradation of antibiotics was investigated.In addition,three-dimensional TiO2 with different morphologies was prepared by hydrothermal method in the reaction environment of plant extracts.The main research contents are as follows:(1)Fresh aloe extract was prepared and used as the reaction environment to prepare club-shaped and flower-shaped amorphous TiO2 particles at room temperature.The effects of extraction concentration,precursor concentration,reaction time and other factors on the product morphology were investigated,which provided a theoretical basis for subsequent studies.(2)The bar particles generated in aloe extract environment were crystallized by hydrothermal method and calcining method,and the 3d TiO2 particles of anatase phase were obtained.The transformation process of particle morphology and the effect of hydrothermal temperature on product morphology were studied.The photocatalytic degradation experiment of antibiotics was designed with simulated visible light as the light source,and the photocatalytic performance of the catalyst was studied comprehensively by combining quenching experiment and stability experiment.(3)Three dimensional TiO2 particles with different morphologies were prepared using hydrothermal method with aloe extract as the reaction environment.The influence of precursor concentration on the product morphology was investigated.