A Highly Effective Copper Nanoparticle Coupled with RGO for Electrochemical Detection of Heavy Metal Ions

• Published in: International journal of electrochemical science 2017-11, Vol.12 (11), p.10933-10945
• Main Authors: Li, Dan, Wang, Chongxu, Zhang, Hui, Sun, Youyi, Duan, Qianqian, Ji, Jianlong, Zhang, Wendong, Sang, Shengbo
• Format: Article
• Language: English
• Subjects: CuNP/RGO; electrochemical measurement; heavy metals; SWASV
• ISSN: 1452-3981; 1452-3981
• DOI: 10.20964/2017.11.19

A highly effective copper nanoparticle (CuNP) coupled with reduced graphene oxide was successfully prepared by liquid phase reduction. The as-prepared products were tested with X-ray diffraction, field-emission transmission electron microscopy, and scanning electron microscopy. CuNPs were distributed averagely on the surface of reduced graphene oxide. CuNP/RGO nanocomposites modified bare glassy carbon electrode was measured by electrochemical impedance spectroscopy and cyclic voltammetry. The availability of CuNP/RGO nanocomposites was analyzed by square wave anodic stripping voltammetry (SWASV). The nanocomposites showed a high electroanalytical activity and eximious sensitivity to Hg(II), Cu(II), Cd(II) and Pb(II), these ions exhibited sensitivities of 27.76, 25.86, 66.30 and 50.17 μA/μM, respectively, and the limits of detection were 0.051, 0.111, 0.203 and 0.186 μM, respectively. The CuNP/RGO nanocomposite was used firstly to detect individually and simultaneously various heavy metal ions. Furthermore, CuNP/RGO/GCE has good anti-interference properties and stability. In this study, CuNP/RGO nanocomposites are presented as a potential material to detect individually and simultaneously heavy metal ions.