Preparation and Photocatalytic Properties of TiO2/Fe3O4/MWCNTs Photocatalyst

• 1、School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013

Abstract：Currently, photocatalytic technology has been used to remove environmental pollutants and already received widespread attention at home and abroad. Since ordinary photocatalyst itself has limitations, semiconductor compound or molecular imprinting photocatalysts are prepared to expand their range of applications in photocatalytic field.After the activation of TiO2/Fe3O4/MWCNTs composite photocatalyst, the molecular imprinted photocatalysts were synthesized through the suspension polymerization method. 1-Methylimidazole-2-thiol, pyrrole, trimethylolpropane trimeth- acrylate and 2, 2'-Azobis-(2,4-dimethylvaleronitrile) were used as template molecule, functional monomer, crosslinkers and initiator, respectively. XRD, SEM, EDS, TEM, FT-IR, UV-vis DRS, TGA and VSM were characterized for the surface morphology, structure and properties of TiO2/Fe3O4/MWCNTs photocatalysts. The results of photocatalytic degradation showed that the photocatalytic degradation rate was decreased in the presence of external cations. The presence of exogenous anions also has a negative effect on the photocatalytic degradation process. In addition, the photodegradation process obeyed the pseudo-first-order kinetic reaction and exhibited an excellent selective degradation ability of 1-methylimidazole-2-thiol.

Keywords： Catalytic Chemistry Photocatalyst Carbon Nanotubes Photocatalytic Degradation