Title:	Platinum nanoparticlesedecorated graphene-modified glassy carbon electrode toward the electrochemical determination of ascorbic acid, dopamine, and paracetamol
Authors:	Anupam Kumar, Manne Lakshminarayanan, V. Ramamurthy, Sai Sathish
Keywords:	Platinum nanoparticleedecorated graphene Ascorbic acid Dopamine Paracetamol
Issue Date:	Jan-2019
Publisher:	Elsevier Masson SAS
Citation:	Comptes Rendus Chimie, 2019, Vol. 484, p 81–92
Abstract:	In the present study, we report the synthesis and characterization of platinum nanoparticles decorated graphene (GPtNPs) nanocomposite toward the electrochemical determination of ascorbic acid (AA), dopamine (DA), and paracetamol (PCT). GPtNPs demonstrated synergistic catalytic activity with enhanced currents in all of the measurements when compared with graphene-modified glassy carbon electrode (G-GCE) and bare GCE. The nanocomposite exhibited low overpotential for AA oxidation and good peak-to-peak separation of 218.0, 218.0, and 436.0 mV for AA–DA, DA–PCT, and AA–PCT, respectively. Cyclic voltammetry (CV) and chronoamperometry (CA) determination of AA, DA, and PCT showed wide linearity ranges. CV determination of AA exhibited linearity range from 300 μM to 20.89 mM and from 22.02 to 39.87 mM. DA determination using CV exhibited linearity range from 5 to 104 μM and from 114 to 684 μM, whereas CA determination of PCT showed a linearity range from 20 μM to 6.43 mM. Differential pulse voltammetry determinations of AA, DA, and PCT exhibited low detection limits of 300, 5, and 5 μM, respectively.
Description:	Restricted Access.
URI:	http://hdl.handle.net/2289/7231
ISSN:	1631-0748
Alternative Location:	https://doi.org/10.1016/j.crci.2018.09.015
Copyright:	2018 Académie des sciences
Appears in Collections:	Research Papers (SCM)

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