Jump to main content
Jump to site search


High-performance Electrochemical Dopamine Sensor based on Platinum-nickel Bimetallic Decorated Poly(dopamine)-functionalized Reduced Graphene Oxide Nanocomposite

Abstract

A nanocomposite of platinum-nickel bimetallic decorated poly(dopamine)-functionalized reduced graphene oxide (Pt-Ni/PDA/rGO) was prepared by a facile and attractive method. Further, a high-performance electrochemical sensor for the detection of dopamine was fabricated by dropping the Pt-Ni/PDA/rGO nanocomposites on a glassy carbon electrode. The morphology and composition of the Pt-Ni/PDA/rGO nanocomposites were characterized by field emission-scanning electron microscopy, transmission electron microscopy, X-ray powder diffraction, energy-dispersive X-ray spectroscopy, Raman microscope and X-ray photoelectron spectrometer. Electrochemical impedance spectroscopy, cyclic voltammetry and chronoamperometry were used to investigate the electrochemical behavior of Pt-Ni/PDA/rGO nanocomposites. The linear range and detection limit were 0.2 - 911 μM and 0.07 μM, respectively. The sensitivity of this non-enzymatic dopamine sensor was calculated to be 912.8 μA mM-1cm-2. Moreover, the Pt-Ni/PDA/rGO nanocomposites-modified GCE also showed good anti-interference ability and stability.

Back to tab navigation

Supplementary files

Publication details

The article was received on 17 Mar 2017, accepted on 12 Jul 2017 and first published on 12 Jul 2017


Article type: Paper
DOI: 10.1039/C7AY00717E
Citation: Anal. Methods, 2017, Accepted Manuscript
  •   Request permissions

    High-performance Electrochemical Dopamine Sensor based on Platinum-nickel Bimetallic Decorated Poly(dopamine)-functionalized Reduced Graphene Oxide Nanocomposite

    Y. Shen, Q. Sheng and J. Zheng, Anal. Methods, 2017, Accepted Manuscript , DOI: 10.1039/C7AY00717E

Search articles by author

Spotlight

Advertisements