MIL-101(Fe)的合成条件优化及RhB催化降解

Optimization of synthesis conditions of MIL-101(Fe)and its catalytic degradation of RhB

通过溶剂热法合成了拉瓦锡材料研究所骨架材料(Materials of Institute Lavoisier,MILs)中的MIL-101(Fe)材料,将其应用于活化过二硫酸盐(PDS)降解罗丹明B(RhB),并优化了反应物配比、合成温度、合成时间等制备条件,优化后的MIL-101(Fe)催化活性得到有效提升。同时探究了MIL-101(Fe)/PDS体系催化降解RhB的最佳反应条件,在RhB初始质量浓度为10 mg/L、PDS投加量为6 mmol/L、催化剂投加量0.2 g/L、初始pH=3、t=25℃的条件下,t<20 min,RhB去除率即可达到100%。

MIL-101(Fe)materials of MIL series were synthesized by solvothermal method.They were applied to activate PDS(persulfate)to degrade RhB(Rhodamine B),and the preparation conditions such as reactant ratio,synthesis temperature and synthesis time were optimized.The optimized MIL-101(Fe)catalytic activity was effectively improved.At the same time,the optimal reaction conditions of MIL-101(Fe)/PDS system for catalytic degradation of RhB were explored.When the initial concentration of RhB was 10 mg/L,PDS dosage of 6 mmol/L,catalyst dosage of 0.2 g/L,initial pH=3,and T=25℃,the RhB removal rate can reach 100%within 20 minutes.