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Preparation of hydrazine‐modified polyacrylonitrile nanofibers for the extraction of metal ions from aqueous media
Author(s) -
Saeed Khalid,
Park SooYoung,
Oh TaeJin
Publication year - 2011
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.33614
Subject(s) - polyacrylonitrile , hydrazine (antidepressant) , nanofiber , aqueous solution , adsorption , electrospinning , materials science , metal ions in aqueous solution , fourier transform infrared spectroscopy , nuclear chemistry , polymer chemistry , metal , chemistry , chemical engineering , polymer , organic chemistry , composite material , chromatography , metallurgy , engineering
Polyacrylonitrile (PAN) nanofibers (prepared by an electrospinning technique) were chemically modified with hydrazine. The Fourier transform infrared spectrum of the hydrazine‐modified polyacrylonitrile (HM–PAN) showed that the intensity of the nitrile peak (2250 cm −1 ) of the PAN nanofibers decreased significantly after treatment with hydrazine. New peaks at about 3400–3100 cm −1 (NH stretching vibration) also appeared, which showed that the hydrazine was chemically attached to the PAN nanofibers. HM–PAN had a smooth surface (as confirmed by a scanning electron microscopy) and was a suitable material for the adsorption of metal ions from aqueous solutions. The adsorption capacity of HM–PAN increased as the adsorption time increased and became constant at 114 and 217 mg/g for Cu(II) and Pb(II) ions, respectively, after 24 h. In addition, more than 90% of the adsorbed Cu(II) and Pb(II) ions were recovered in a 1 M HNO 3 solution after 1 h. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011