Synthesis and characterization of bimetallic metal-organic frameworksbased on Cu and Zr for absorption and photocatalytic degradation oforganophosphorus compounds

Metal-organic framework (MOF) is a new class of porous crystalline materials featured withregular pores, open channels and high surface area [۱,۲]. In particular, a few bimetallic MOFscan be obtained when two kinds of metal ions are coordinated with ligands among the MOFstructures[۳]. Adsorption desulfurization is very effective for the removal of organophosphoruscompounds from the environment. The metal-organic frameworks have emerged as a new typeof adsorbents because of their porous nature and large specific surface area[۴]. In this study,Cu۲+ was covalently introduced into the UiO-۶۶ framework at the defective sites with H۲BDC asa ligand by the solvothermal method. Then, the structure of the synthesized compounds isinvestigated by using SEM, TEM, EDX, XRD, DRS and FT-IR.The photocatalytic activitieswere investigated via the degradation of organophosphorus pesticidesusing the Cu/Zr MOFsunder UV light irradiation. On the basis of the results, a possible photocatalytic mechanism ofthe prepared samples was proposed.The results indicate that Cu/Zr bimetallic metal-organicframework have great application potential in pollutant degradation.

کلیدواژه ها:

metal organic framework ، bimetallic MOF ، photocatalyst ، photocatalytic degradation ، organophosphorus compounds