Highly sensitive and selective electrochemical dopamine sensing properties of multilayer graphene nanobelts

Nanotechnology
Padmanathan Karthick KannanChandra Sekhar Rout

Abstract

In the present study, we report the electrochemical sensing property of multi-layer graphene nanobelts (GNBs) towards dopamine (DA). GNBs are synthesized from natural graphite and characterized by using techniques like field-emission scanning electron microscopy, atomic force microscopy and Raman spectroscopy. An electrochemical sensor based on GNBs is developed for the detection of DA. From the cyclic voltammetry and amperometry studies, it is found that GNBs possess excellent electrocatalytic activity towards DA molecules. The developed DA sensor showed a sensitivity value of 0.95 μA μM(-1) cm(-2) with a linear range of 2 μM to 0.2 mM. The interference data exhibited that GNB is highly selective to DA even in the presence of common interfering species like ascorbic acid, uric acid, glucose and lactic acid.

Citations

Jan 13, 2017·The Journal of Physical Chemistry. B·Balakumar VellaichamyTharmaraj Paulmony
Dec 14, 2018·Physical Chemistry Chemical Physics : PCCP·Sindy J Rodríguez, Eduardo A Albanesi
Feb 23, 2020·Sensors·Faten Bashar Kamal Eddin, Yap Wing Fen
Sep 7, 2021·Chemistry, an Asian Journal·Santa IslamA J Saleh Ahammad

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