Eu doped Zn-MOF nanofiber fluorescent membrane and its multifunctional detection of nitroaromatic compounds and Fe3+

Metal-organic framework (MOF) fluorescent materials have significant advantages in detecting organic pollutants and metal ion pollution. A zinc metal organic framework nanofiber fluorescent membrane (Zn(Eu)-MOF@PAN NFM) was prepared by doping the lanthanide metal Eu using an electrospinning and impregnation process. The structure and morphology of the membrane was characterized by SEM, XRD, FT-IR and XPS. The results show that the membrane has good fluorescence performance and can successfully and efficiently detect nitrobenzene (NB; detection limit = 0.861 ppm, K sv  = 0.143 ppm −1 ), 4-nitrophenol (4-NP; detection limit = 0.631 ppm, K sv  = 0.178 ppm −1 ), benzaldehyde (BA; detection limit = 0.981 ppm, K sv  = 0.051 ppm −1 ) and Fe 3+ ions (detection limit = 3.418 ppm, K sv  = 3.210×10 −3 ppm −1 ) in solution. In terms of repeatability and stability, the test results are obviously better than the property of the powder.