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  • Title: Synthesis of Pb nanowires-Au nanoparticles nanostructure decorated with reduced graphene oxide for electrochemical sensing.
    Author: Dong W, Ren Y, Zhang Y, Chen Y, Zhang C, Bai Z, Ma R, Chen Q.
    Journal: Talanta; 2017 Apr 01; 165():604-611. PubMed ID: 28153305.
    Abstract:
    Graphene sheets are a sp2-hybridized carbon material that offer extraordinary electrical conductivity and excellent thermal and mechanical properties. They are expected to find use in a wide variety of applications. In this study, a new novel electrocatalyst, a Pb nanowires-Au nanoparticles nanocomposite decorated with reduced graphene oxide (rGO-Pb NWs-Au NPs), was successfully synthesized by an effective and simple approach. Transmission electron microscopy (TEM), X-ray diffraction (XRD) and Raman spectroscopy were employed to observe the as-prepared nanomaterial. In addition, the electrochemical behaviors of a rGO-Pb NWs-Au NPs-modified glassy carbon (GC) electrode were evaluated by cyclic voltammetry and chronoamperometry. The final prepared sensor exhibited favorable electroreduction activity towards H2O2 with a remarkable sensitivity of 552.43µAmM-1cm-2, a wide linear range of 0.005-1.25mM, a detection limit of 0.6µM and a rapid response time (within 5s). Moreover, the sensor also exhibited good reproducibility, selectivity and stability. Therefore, the present work also provides a potential practicable approach to fabricate various of non-enzymatic amperometric sensors, such as sensors for the detection of glucose, urea, ascorbic acid and dopamine.
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