以柚子皮为基底碳负载型多相Fenton-like催化剂制备及性能研究

Preparation and activity of heterogeneous catalyst based on pomelo peel for Fenton-like reaction

以柚子皮为基底,采用浸渍法将合成与负载一步完成,制备出碳负载型高效多相Fenton-like催化剂,并将其应用于酸性橙Ⅱ溶液的脱色降解反应中。实验结果表明:催化剂中铁以Fe OOH形式存在,在催化剂用量为1 g/L、溶液p H为4条件下,反应30 min后酸性橙Ⅱ的脱色率达到78.5%,反应60 min后酸性橙Ⅱ的脱色率达到97.5%。加入可见光可以明显增强Fenton的反应效果,反应30 min后酸性橙Ⅱ的脱色率就达到98.5%。催化剂重复使用,酸性橙Ⅱ的脱色率差别不大,证明制备的催化剂具有良好的稳定性。

With pomelo peel as substrate, the heterogeneous Fenton-like catalyst was prepared by the impregnation method to realize the synthesis and loading in one step.The prepared catalyst was used to catalyze the decolorization reaction of acid orange（AO） II solution.Experimental results showed that the element Fe existed in the form of FeOOH in the catalyst.Under the optimum reaction conditions of catalyst dosage of 1 g/L,solution pH of 4,and the reaction time of 30 min,the decolorization efficiency of AO II reached 78.5%.After reaction of 60 min, the decolorization efficiency of AO II rate reached 97.5%. Visible light could obviously enhance Fenton reaction effect. Only after reaction of 30 min with visible light,the decolorization efficiency of AO II reached 98.5%.After repeated use of catalyst, AO II decolorization rate did not changed a lot, thus proved that the catalyst possessed well stability.