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一定条件下用水热法制备了的掺Fe(Ⅲ)的TiO2晶体,XRD分析结果表明它是锐钛矿型Fe(Ⅲ)的TiO2(A-TiO2).研究了以自制的掺Fe(Ⅲ)的A-TiO2为光催化剂对罗丹明B溶液的降解性能.结果表明,在5 mg/L的罗丹明B溶液中,加入0.1650 g自制的掺Fe(Ⅲ)的5%的A-TiO2,用硝酸调节溶液PH=5后,可见光照射下,43℃恒温磁力快速搅拌反应6 h,罗丹明B降解率为76.5%;同样条件下经254nm紫外光照6 h,降解率达到95.7%.
Under certain conditions, the Fe (Ⅲ) -doped TiO2 crystal prepared by hydrothermal method was characterized by XRD. It was found that it is an anatase-type TiO2 (A-TiO2) Of A-TiO2 photocatalyst on rhodamine B solution.The results showed that 0.1650 g of 5% A-TiO2 doped with Fe (Ⅲ) was added to 5 mg / L Rhodamine B solution, Under the condition of visible light irradiation, the reaction solution was stirred at 43 ℃ for 6 h and the degradation rate of rhodamine B was 76.5% under the irradiation of visible light. Under the same conditions, the degradation rate of rhodamine B reached 95.7% under 6 hours UV irradiation at 254 nm.