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以TiO_2/K2S2O8为催化剂,以碱性橙为目标降解物,研究TiO_2协同K2S2O8的紫外光催化降解反应,通过对比TiO_2/K2S2O8和纯TiO_2在紫外灯光照下碱性橙的降解效果,来探究TiO_2协同K2S2O8光催化降解碱性橙的可行性。重点考察了K2S2O8的浓度、碱性橙的不同初始浓度、p H值和光照时间等因素从而确定碱性橙的最佳降解条件。实验结果表明:当碱性橙的初始浓度为10 mg/L,TiO_2的用量为1.0 g/L,K2S2O8的用量为0.5 g/L,p H为6.7,紫外灯光照降解碱性橙溶液50min的条件下,碱性橙的降解率可达95.71%。通过比较得出,在最佳条件下TiO_2/K2S2O8对碱性橙的降解率明显高于纯TiO_2。
Using TiO2 / K2S2O8 as catalyst and basic orange as degradation target, the photocatalytic degradation reaction of TiO2 with K2S2O8 was studied. By comparing the degradation of alkaline orange with TiO2 / K2S2O8 and pure TiO2 under ultraviolet light, Feasibility of synergistic K2S2O8 photocatalytic degradation of alkaline orange. The concentration of K2S2O8, different initial concentration of alkaline orange, p H value and light time were investigated emphatically to determine the best degradation conditions of basic orange. The experimental results show that when the initial concentration of alkaline orange is 10 mg / L, the dosage of TiO 2 is 1.0 g / L, the dosage of K2S2O8 is 0.5 g / L, p H is 6.7, Under the conditions, the degradation rate of alkaline orange can reach 95.71%. By comparison, the degradation rate of alkaline orange under the optimal conditions is obviously higher than that of pure TiO_2.