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H3PW12O40/TiO2 nanometer photocatalyst was prepared by one step hydrothermal synthesis from H3PW12O40·nH2O and Ti(OBu) 4,simultaneously realizing the load and modification of H3PW12O40.The catalyst was characterized by Fourier transform infrared spectroscopy(FTIR),powder X-ray diffraction(XRD),nitrogen adsorption-desorption analysis and scanning electron microscopy(SEM).The results show that the catalyst is Keggin structure and crystallized in anatase structure,the diameter and specific area of the prepared catalyst are3.8 nm and177.9 m2/g,respectively,and its dispersity is better.The photocatalytic properties were compared for TiO2,H3PW12O40/TiO2prepared by impregnation and H3PW12O40/TiO2 prepared by hydrothermal method with methyl orange as a probe.The effects of H3PW12O40loadings,crystallization method,initial pH and concentration of dye solution on the degradation of methyl orange were investigated.
H3PW12O40 / TiO2 nanometer photocatalyst was prepared by one step hydrothermal synthesis from H3PW12O40 · nH2O and Ti (OBu) 4, simultaneously realizing the load and modification of H3PW12O40. The catalyst was characterized by Fourier transform infrared spectroscopy (FTIR), powder X-ray diffraction (XRD), nitrogen adsorption-desorption analysis and scanning electron microscopy (SEM). The results show that the catalyst is Keggin structure and crystallized in anatase structure, the diameter and specific area of the prepared catalyst are 3.8 nm and 177.9 m2 / g, respectively, and its dispersity is better. The photocatalytic properties were compared for TiO2, H3PW12O40 / TiO2prepared by impregnation and H3PW12O40 / TiO2 prepared by hydrothermal method with methyl orange as a probe. The effects of H3PW12O40loadings, crystallization method, initial pH and concentration of dye solution on the degradation of methyl orange were investigated.