制备具有吸附性质的氨基接枝电纺聚丙烯腈螯合纤维

Polyacrylonitrile (PAN) nanofibers have been fabricated via electrospinning technique. Then an aminated chelating PAN nanofiber (APAN nfs) with high adsorption capacity for copper and dichromate ions have been prepared by a one-step reaction between the PAN nanofibers and diethylenetriamine (DETA). The morphology, structure of the as-prepared chelating nanofibers are characterized by scanning electron microscopy (SEM), FT-IR spectroscopy, respectively. The as-prepared chelating nanofibers show high metal removal properties, such as the maximum removal capacity of copper ion is 137.83 mg/g and dichromate ions are 156.25 mg/g. The adsorption mechanism of copper and dichromate ions have also been discussed in this work.