Affordable Access

deepdyve-link
Publisher Website

Synthesis of a new ion-imprinted polymer for selective Cr(VI) adsorption from aqueous solutions effectively and rapidly.

Authors
  • Kong, Zhiyun1
  • Du, Yajie2
  • Wei, Junfu3
  • Zhang, Huan4
  • Fan, Longwei2
  • 1 State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes, Tiangong University, Tianjin 300387, China; School of Environmental Science and Engineering, Tiangong University, Tianjin 300387, China; Tianjin Engineering Center for Safety Evaluation of Water & Safeguards Technology, Tianjin 300387, China. Electronic address: [email protected] , (China)
  • 2 State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes, Tiangong University, Tianjin 300387, China; School of Environmental Science and Engineering, Tiangong University, Tianjin 300387, China. , (China)
  • 3 State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes, Tiangong University, Tianjin 300387, China; School of Chemistry and Chemical Engineering, Tiangong University, Tianjin 300387, China. , (China)
  • 4 State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes, Tiangong University, Tianjin 300387, China; School of Environmental Science and Engineering, Tiangong University, Tianjin 300387, China; Tianjin Engineering Center for Safety Evaluation of Water & Safeguards Technology, Tianjin 300387, China. , (China)
Type
Published Article
Journal
Journal of Colloid and Interface Science
Publisher
Elsevier
Publication Date
Apr 15, 2021
Volume
588
Pages
749–760
Identifiers
DOI: 10.1016/j.jcis.2020.11.107
PMID: 33317852
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

Removing hexavalent chromium (Cr(VI)) from aqueous solution is strategically important. A novel and selective adsorbent was synthesized using a high electron beam irradiation pre-grafting and post-surface ion imprinting method using Cr(VI) and polypropylene (PP) fibers as the template and substrates, respectively. The results obtained using Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and thermogravimetric analysis (TG) indicated that the prepared sorbent was successfully synthesized. At the same time, the adsorption performances were studied through batch experiments. The results exhibited rapid adsorption kinetics, a wide working pH range, and excellent selectivity and regeneration. The equilibrium adsorption was achieved within 30 min, the maximum sorption capacity of Cr(VI)-IIPs was 156.5 mg g-1 and partition coefficients (PC) was 0.591 mg g-1 uM-1 at 400 mg L-1 initial concentration and 298 K. The relative selectivity coefficients of the ion-imprinted polymer (IIP) for Cr2O72-/HPO42- and Cr2O72-/NO3- were 36.7 and 39.9, respectively. In addition, the prepared sorbent has a negligible loss in adsorption capacity after five cycles. IIP has good application prospects in the selective removal of Cr(VI) ions. Copyright © 2020 Elsevier Inc. All rights reserved.

Report this publication

Statistics

Seen <100 times