Study on preparation of ZnO doped Mesoporous TiO2 Microspheres and its Photocatalytic properties

Ti(OC₄H₉)₄ and Zn(NO₃)₂ can be used as raw materials to make ZnO / Mesoporous TiO₂ Nano-assembly with Ultrasound-Hydrothermal method. The purpose of the research is to study the influence of Water Temperature and Ultrasonic treatment on the Crystalline and Microstructure of the Assembly. The results show that Ultrasonic treatment can stimulate Ti(OBu)₄ s Hydrolysis -condensation and Homogeneous nucleation, which is the key factor to get Mesoporous Microspheres with the features of Morphologyrules and Particle size distribution. After the process of Ultrasonic water treatment with 150°C, the sample not only has big surface area, good degree of crystallization and much smaller grain size ,but also increases Photodegradation reaction rate constant to Methyl orange to 0.15 min^-1, which shows good Photocatalytic properties.