Recently, nanofiber membranes which have extremely high specific surface and high adsorption performance of heavy metal ions are getting noticed. In this study, the polyacrylonitrile (PAN) nanofiber membranes were carbonized and modified with nitro group (-NO2) or amino group (-NH2) in order to obtain a higher adsorption capacity of Cu2+ in solution. And, the optimum pH for adsorption of Cu2+ has been investigated.
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