Research on Preparation Characterization and Application of Photocatalytic Material of Nanometer TiO_2/Montmorillonite

Materials of composite photocatalyst were prepared which TiO2/Ca-montmorillonite,TiO2/Na-montmorillonite and TiO2/organic-montmorillonite by the sol-gel and modified of montmorillonite as a substrate.Test techniques of XRD,FT-IR、AFM、SEM were adopted to characterized the properties of the materials.The test results showed that TiO2 presented at all of anatase,particle size of crystal TiO2 was ranged from 12 nm to 27 nm.Nanometer TiO2 crystal on the surface of Ca-montmorillonite growing upward.At top end of mono-crystal;a crystal film formed on the surface of Na-montmorillonite which growth at multcrystal together;Nanometer TiO2 crystal on the surface of the organic montmorillonite distributed at reunite state.The rate of decolorization of photocatalysts for azo dye wastewater were respectively 95.87,96.28 and 71.07 percent as 400 mg/L for wastewater concentration,3 g/L dosages of photocatalyst,photocatalysis 60 min in UV-light.