Journal of Inorganic Materials ›› 2014, Vol. 29 ›› Issue (10): 1110-1114.DOI: 10.15541/jim20140234

• Orginal Article • Previous Articles     Next Articles

Degradation Effect of Super Acid Modified Fe2O3-TiO2-N on Acrylic Acid under Visible Light

HAN Zhi-Yue, DU Zhi-Ming, ZHANG Ying-Hao, ZHAO Lin-Shuang, CONG Xiao-Min   

  1. (State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China)
  • Received:2014-05-05 Published:2014-10-20 Online:2014-09-22

Abstract:

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.

Key words: co-doping, degradation, visible light, photocatalytic

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