STUDY ON PHOTOCALYTIC DEGRADATION OF ANILINE WITH α-Fe2O3

The nano--Fe2O3 was prepared by a hydrothermal process and then sintered at temperature of 420℃. The prepared sample was characterized by X-ray diffraction (XRD), infrared spectroscopy(FT-IR) and thermogravimetry (TG). The aniline was used as a model compound because of its toxicity. The main factors such as initial concentration of aniline, adding dose of hematite，solution pH value and time of degradation were discussed for the removal efficiency of aniline. The orthodoxy experiment was investigated to get the optimized conditions that the initial concentration of aniline is about 7 mg/L，the adding dose of hematite is 0.025g/L，the pH value is 6 and the time of degradation is 90 min．The effect order of factors to photocatalytic degradation is:A?D?C?B. Photocatalytic degradation of aniline is fit well to the model of Langmuir-Hinshelwood (L-H)．