Preparation and Utilization of UiO-66-NH2 Nanofiber Composite Membrane for Adsorption Purposes
Organic pollutants such as water-soluble dyes are widely distributed in soil and water,causing serious damage to the ecosystem.In this work,a water-stable zirconium-based metal-organic framework(UiO-66-NH2)was loaded onto an organic-inorganic hybrid electrospun fiber membrane by an in situ solvothermal method.This new composite membrane has the advantages of large specific surface area and good adsorption performance.The adsorption performance of the composite membrane for methylene blue(MB),rhodamine B(RhB)and sodium fluorescein(SF)was investigated.The maximum adsorption capacities were 64.5 mg/g for MB,34.4 mg/g for RhB,and 70.08 mg/g for SF.Under the action of the admixture persulfate,the UiO-66-NH2-based nanofiber composite membrane can quickly degrade the adsorbed dyes and restore their adsorption performance.It is easy to operate and has a high reuse rate.It has a good application prospect in wastewater purification.
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