Preparation of TiO_2/AC composite photocatalyst and its degradation performance for malachite green

TiO2/AC photocatalyst with different loading contents is prepared by sol-gel method with activated carbon(AC) as the carrier and characterized by XRD,SEM and FT-IR.The effects of the amount of loaded TiO2,the amount of light catalyst and the initial concentration of the dye solution on degradation rate of Malachite green(MG) are investigated.The results show that 30% of the amount of TiO2 loaded on activated carbon have possessed not only favorable and stable photocatalytic activity but also considerable recycling value for MG.Degradation effect is still more than 95% after seven recycle.