Flower-like iron alkoxide was synthesized by a solvothermal method under nitrogen(N2) flow,and porous flower-like α-ferric oxide(α-Fe2O3) particles were obtained with a subsequent heat treatment at 500℃ in air.The products were characterized and analyzed.The degradation experiment on methyl orange was also carried out.The results shown that the α-Fe2O3 had a large specific surface area of 66.92m2/g.And it was weak ferromagnetic.The saturation magnetization value(Ms),remanence value(Ms) and coercivity value(Hc) were 2.11emu/g,0.55emu/g and 210.91Oe respectively.When the concentration of α-Fe2O3 microspheres was 0.5g/L and methyl orange solution was 10mg/L,it had an excellent photocatalytic rate of methyl orange,namely 60.05% after ultraviolet radiation for 3h.It can be collected simply by a magnetite and the degradation rate of methyl orange remained 50.85% after 6 cycles.
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基金资助
纺织之光基金(J201601)
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