Novel tetrazole‐functionalized absorbent from polyacrylonitrile fiber for heavy‐metal ion adsorption

• DOI: 10.1002/app.35641
• Publication Date: 2011-12-19T20:34:45Z
• Authors: Suihong Yan; Min Zhao; Genhu Lei; Yinmao Wei
• Keywords: Polyacrylonitrile; Tetrazole; Langmuir adsorption model

Abstract A novel functional absorbent, polyvinyltetrazole fiber (PVT), was made from polyacrylonitrile through [3+2] azide‐nitrile cycloaddition reaction of cross‐linked 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), maximum capacities 323, 278, 200, 175 mg g −1 , respectively. process described as an ion exchange mechanism. isotherms were better fitted for Langmuir model, while kinetics by pseudo‐second order equation. In addition, tested ions could be desorbed efficiently at pH below 2.0, capacity regenerated had no loss until seven cycles. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012