Facile Synthesis of Au Nanoparticles@Reduced Graphene Oxide Nanocomposition-Modified Electrode for Simultaneous Determination of Copper and Mercury Ions

Youzhi Yao
2019 International Journal of Electrochemical Science  
A highly efficient electrochemical sensor consisted by gold nanoparticles (Au NPs)loaded on reduced graphene oxide (RGO) nanosheets for Cu 2+ and Hg 2+ was developed. The electrochemical performances of as-prepared bare glassy carbon electrode (GCE), RGO/GCE, Au NPs@RGO/GCE were characterized by cyclic voltammetry (CV) and differential pulse voltammetry (DPV), respectively. The Au NPs@RGO/GCE exhibited an excellent sensitivity toward Cu 2+ and Hg 2+ . The results revealed that the detection
more » ... t of Cu 2+ was 0.0015 μM and Hg 2+ was 0.02 μM (S/N = 3). In addition, the Au NPs@RGO nanocomposite modified electrode was optimized and applied for practical water sample analysis with a satisfactory outcome. The electrochemical sensor based on Au NPs@RGO would be expected to expand the application field of heavy metal detection.
doi:10.20964/2019.04.06 fatcat:rfsisv7qkfemzjfuftq7w37m3y