Preparation and Photocatalytic Properties of Fe-Doped TiO2 Nanocrystalline Composite Particles

摘要

Metatitanic acid was adopted as the raw material to prepare Fe-doped TiO2 nanocrystalline composite particles using suspension polymerization and sol-gel method,which were then characterized with XRD,TEM,TG-DTA and IR,etc..The results showed the samples were nanocrystal accumulated porous particles,with average particle size of 29nm.Through doping of Fe3+ ion,the photo catalytic activities of particles under Xe lamp were investigated by photodegrading the methyl orange.It was found that,the TiO2 nanocrystal doped with 0.5％ Fe3+ ion (accounted as mass fraction) had the highest catalytic activity.The Fe-doped TiO2 nanocrystalline composite particles prepared in this study has high activity,is easy for separation,recovery and reuse.