| In this paper TiO2/minerals have been prepared using natural minerals as carrier and the industrial metatitanic acid and the industrial sulfate titanium liquid as the raw material based on the effects such as loading capacity of TiO2, specific surface area of minerals, different mineral source and preparation cost. The acid treatment and heat treatment of minerals, preparation methods and condition of TiCVminerals have been studied, the photocatalytic experiments on samples were tested from degrading methylene blue solution, and some important results as follows:1. TiO2/sepiolite and TiCVzeolite with high photocatalytic activity have been prepared using sepiolite and zeolite minerals as carrier and the industrial metatitanic acid and the industrial sulfate titanium liquid as the raw materials for the first time. XRD results show that TiO2on the sepiolite and zeolite surface were anatase, and the specific surface arrived 255m2/g and 161m2/g for TiO2/sepiolite and TiO2/zeolite respectively;2. The decoloring rate and photocatalytic degradation of methylene blue solution for TiO2/sepiolite and TiO2/zeolite were high under sunlight;3. Also decoloring rate and photocatalytic degradation of methylene blue werehigh for TiO2/sepiolite and TiO2/zeolite, and so much as sample reusing several times;4. The samples have higher decoloring rate and photocatalytic activity for TiO2/zeolite without calcining, and lower cost for the preparation of TiO2/zeolite;5. Without any other treatment the decoloring rate for waste printworks water was 92.37% using TiO2/zeolite as a photocatalyst.
|
PDF Full Text Request