Preparation of TiO_2 photocatalyst by hydrothermal method from aqueous peroxotitanium acid gel

摘要

Well-dispersed nanocrystalline TiO_2 powders were prepared by hydrothermal method from aqueous peroxotitanium acid gel obtained by addition of H_2O_2 solution to freshly prepared and well-washed titanic acid gel. The obtained TiO_2 powders were characterized by FTIR spectrophotometer, X-ray diffraction (XRD), transmission electron microscope (TEM) and N_2 adsorption. The powders obtained by hydrothermally treating at 393 K for 6 h showed the highest photocatalytic activity for the degradation of aqueous methyl orange Solution