Degradation Effect of Super Acid Modified Fe2O3-TiO2-N on Acrylic Acid under Visible Light
Super acid modified Fe2O3-TiO2-N was prepared by hydrolysis precipitation method and sulfuric acid impregnation method.X-ray diffraction (XRD) showed that the catalysts were anatase,Fe2O3 were highly decentralized in the catalysts with amorphous form,and modification of SO42 inhibited grain growth.Ultraviolet-visible spectra (UV-Vis) showed that Fe and N co-doping made the visible light absorption to the red shift,and sulfuric acid impregnation treatment made the light absorption to the blue shift.Diffuse reflectance Fourier transform infrared (DRIFT-IR) spectra showed that sulfuric acid impregnation can improve the surface acidity of catalysts.X-ray photoelectron spectra (XPS) showed that the valence of S was +6 in the catalysts.Its photocatalytic activity on the degradation of acrylic acid under visible light was studied.The one hour degradation rate of super acid modified Fe2O3-TiO2-N catalyst under visible light was improved 57％ than that of the N-doping sample under the same condition.
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NSTL
万方数据
维普
