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.
| Original language | English |
|---|---|
| Pages (from-to) | 1110-1114 |
| Number of pages | 5 |
| Journal | Wuji Cailiao Xuebao/Journal of Inorganic Materials |
| Volume | 29 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 1 Oct 2014 |
Keywords
- Co-doping
- Degradation
- Photocatalytic
- Visible light