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Polymers 2016, 8(4), 78; doi:10.3390/polym8040078

Preparation of Highly Dispersed Reduced Graphene Oxide Modified with Carboxymethyl Chitosan for Highly Sensitive Detection of Trace Cu(II) in Water

1
School of Ocean Science and Biochemistry Engineering, Fuqing Branch of Fujian Normal University, 1 Longjiang Road, Fuqing 350300, China
2
College of Environmental Science and Engineering, Fujian Normal University, 8 Shangsan Road, Fuzhou 350007, China
3
College of Chemistry and Chemical Engineering, Fujian Normal University, 8 Shangsan Road, Fuzhou 350007, China
4
Jiangsu Key Laboratory for Organic Electronics & Information Displays and Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, Nanjing 210046, China
These authors contributed equally to this work.
*
Authors to whom correspondence should be addressed.
Academic Editor: Frank Wiesbrock
Received: 31 January 2016 / Revised: 1 March 2016 / Accepted: 7 March 2016 / Published: 1 April 2016
(This article belongs to the Special Issue Nano- and Microcomposites for Electrical Engineering Applications)
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Abstract

In this article, reduced graphene oxide (RGO)/carboxymethyl chitosan (CMC) composites (RGO/CMC) were synthesized by a hydrothermal method through in-situ reduction and modification of graphene oxide (GO) in the presence of CMC. An electrochemical sensor for the determination of Cu(II) by differential pulse anodic stripping voltammetry (DPASV) was constructed by an electrode modified with RGO/CMC. The fabricated electrochemical sensor shows a linear range of 0.02–1.2 μmol·L−1, a detection limit of 3.25 nmol·L−1 (S/N = 3) and a sensitivity of 130.75 μA·μmol·L−1·cm−2, indicating the sensor has an excellent detection performance for Cu(II). View Full-Text
Keywords: graphene; carboxymethyl chitosan; sensor; differential pulse anodic stripping voltammetry; Cu(II) graphene; carboxymethyl chitosan; sensor; differential pulse anodic stripping voltammetry; Cu(II)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Chen, S.; Ding, R.; Ma, X.; Xue, L.; Lin, X.; Fan, X.; Luo, Z. Preparation of Highly Dispersed Reduced Graphene Oxide Modified with Carboxymethyl Chitosan for Highly Sensitive Detection of Trace Cu(II) in Water. Polymers 2016, 8, 78.

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