Fabrication of Cu-MOFs derived nanofiber membranes for efficient removal of environmental pollutants

Abstract

Globally, the most significant environmental issue is water pollution from industrial wastes. In this paper, two novel copper-based metal-organic frameworks (Cu-MOFs) were constructed using 1,4-naphthalene dicarboxylic acid (1,4-H2NDC) as the main ligand along with N,N'-bis(pyridin-3-yl)cyclohexane-1,4-dicarboxamide (3-bcda) or N,N'-bis(3-pyridyl)adipamide (3-bpaa) as the secondary ligand under hydrothermal method. Moreover, Cu-based derived materials (Cu-1-X and Cu-2-X, X = 600/800/1000) were prepared by different high temperatures using Cu-MOFs as the precursors. Furthermore, a series of homogeneous nanofiber membrane materials were prepared by sol-gel and electrospinning techniques by using Cu-based derived materials. As a result, Cu-1-1000@PAN and Cu-2-1000@PAN catalysts possessed high-efficiency photocatalytic degradation activity in the water purification process, especially for photodegradation of GV. The pyrolysis temperature had a significant impact on the photodegradation process, which reduced the band gap and improved the degradation efficiency. This research presented an ecologically sustainable and practical solution for the removal of pollutants in water and the treatment of industrial wastewater.