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Novel tetrazole‐functionalized absorbent from polyacrylonitrile fiber for heavy‐metal ion adsorption
Author(s) -
Yan Suihong,
Zhao Min,
Lei Genhu,
Wei Yinmao
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.35641
Subject(s) - polyacrylonitrile , adsorption , acrylonitrile , tetrazole , azide , fiber , langmuir adsorption model , metal ions in aqueous solution , nitrile , polymer chemistry , materials science , ion exchange , metal , chemistry , inorganic chemistry , nuclear chemistry , ion , organic chemistry , polymer , copolymer
A novel functional absorbent, polyvinyltetrazole fiber (PVT), was made from polyacrylonitrile fiber through [3+2] azide‐nitrile cycloaddition reaction of cross‐linked polyacrylonitrile with sodium azide. The obtained PVT showed strong adsorption ability to the investigated heavy‐metal ions, Cu(II), Cd(II), Ni(II), and Zn(II), with the maximum adsorption capacities of 323, 278, 200, and 175 mg g −1 , respectively. The adsorption process was described as an ion exchange mechanism. The adsorption isotherms were better fitted for Langmuir model, while adsorption kinetics was better described by the pseudo‐second order equation. In addition, the tested heavy‐metal ions could be desorbed efficiently from PVT at pH below 2.0, and the adsorption capacity of the regenerated PVT had no loss until seven cycles. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012