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Polymers 2016, 8(12), 445; doi:10.3390/polym8120445

Design of Graphene- and Polyaniline-Containing Functional Polymer Hydrogel as a New Adsorbent for Removal of Chromium (VI) Ions

1
Department of Chemistry Education, Kyungpook National University, Daegu 41566, Korea
2
Department of Nanoscience and Nanotechnology, Kyungpook National University, Daegu 41566, Korea
3
Research Institute of Advanced Energy Technology, Kyungpook National University, Daegu 41566, Korea
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: Christine Wandrey
Received: 24 October 2016 / Revised: 8 December 2016 / Accepted: 16 December 2016 / Published: 21 December 2016
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Abstract

Hydrogels find applications in various fields, and the ever-growing spectrum of available monomers, crosslinking, and nanotechnologies widen the application of polymer hydrogels. Herein, we describe the preparation of a new graphene (G)- and polyaniline (PANI)-containing functional polymer gel (G/PANI/FG) through a facile crosslinking copolymerization approach. Several characterization techniques such as field-emission scanning electron microscopy, Fourier-transform infrared, and X-ray photoelectron spectroscopy were employed to understand the physicochemical characteristics of the G/PANI/FG. The new G/PANI/FG was used as an adsorbent for chromium (VI) and exhibited the highest Cr (VI) removal efficiency (~97%). The inclusion of G and PANI in the gel results in high surface area, 3D porous structure, and Cr (VI)-chelating amine sites, which enhanced the Cr (VI) removal efficiency and thermal stability of the gel adsorbent. The results of our study revealed that G/PANI/FG is suited for the removal of Cr (VI) from aqueous solution. View Full-Text
Keywords: functional gel; graphene; polyaniline; chromium ions functional gel; graphene; polyaniline; chromium ions
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Chin, J.-S.; Gopalan, A.-I.; Muthuchamy, N.; Lee, K.-P. Design of Graphene- and Polyaniline-Containing Functional Polymer Hydrogel as a New Adsorbent for Removal of Chromium (VI) Ions. Polymers 2016, 8, 445.

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