Study on Preparation of Photocatalytic Material by Ce Doping in Titanium-Containing Blast Furnace Slag and Its Properties AITranslate

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Chinese Library Classification Number:O643.36[理学]

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To achieve the comprehensive utilization of metallurgical solid waste titanium-containing blast furnace slag resources,the titanium-containing blast furnace slag(TiO₂ mass fraction<20%)was used as the titanium source,and the Ce-doped titanium-containing blast furnace slag photocatalytic material was prepared by a high-temperature solid-phase doping method.The photocatalyst was characterized by XRD,SEM-EDS and UV-Vis DRS analytical techniques,and the effects of catalyst dosage,UV irradiation time and Rhodamine B(RhB)solution pH value on the photocatalytic performance of Ce-doped titanium-contai-ning blast furnace slag were investigated.The results show that Ce ions are successfully doped into the lat-tice of perovskite(CaTiO₃)and diopside(CaO·MgO·2SiO₂)by the high-temperature solid-phase do-ping method,and both CaTiO₃ and CaO·MgO·2SiO₂ participate in the photocatalytic degradation reac-tion of RhB solution.The addition of Ce ions enhances the light absorption capacity of titanium-containing blast-furnace slag and improves the efficiency of the catalyst in RhB degradation.Under the conditions of a catalyst dosage of 1.00 g,a irradiation time of 2.0 h,and a solution pH of 2,the degradation rate of 100 mL RhB solution with an initial concentration of 10 mg/L reaches 97.2%.