Publication Type:

Journal Article

Authors:

Dhara, K.; T.a Ramachandran; Bipin G. Nair Dr.; T. G. Satheesh Babu

Source:

Journal of Electroanalytical Chemistry, Elsevier, Volume 764, p.64-70 (2016)

URL:

http://www.scopus.com/inward/record.url?eid=2-s2.0-84955439781&partnerID=40&md5=5207c109daba7f806ce1a36d195c0225

Keywords:

ascorbic acid, Catalyst activity, Electroactive species, Electrodes, Enhanced catalytic activity, Fabrication, Fiber optic sensors, Gold, Gold Nanoparticles, Graphene, Graphene oxides, hydrogen peroxide, Hydrogen peroxide sensor, Metal Nanoparticles, Nanocomposites, Nanoparticles, Organic acids, oxidation, Peroxides, Reduced graphene oxides, Screen printed electrodes, Spectroscopic and microscopic techniques

Abstract:

A simple approach is followed for the fabrication of disposable nonenzymatic hydrogen peroxide (H2O2) sensor using gold nanoparticles decorated reduced graphene oxide (Au/rGO) nanocomposite. Au/rGO nanocomposite was prepared by one pot reduction of graphene oxide and Au(III) ions. The composite was characterized using various spectroscopic and microscopic techniques. The Au/rGO nanocomposite suspension was cast on the indigenously fabricated screen printed electrode (SPE). Voltammetric studies on the modified electrode showed that the Au/rGO nanocomposite modified SPE have enhanced catalytic activity towards H2O2. The sensor exhibited linear relationship in the range from 20 μM to 10 mM with a sensitivity of 1238 μA mM- 1 cm- 2 and a limit of detection 0.1 μM. The sensor also showed excellent selectivity in presence of other electroactive species such as ascorbic acid, dopamine, glucose and uric acid. © 2016 Elsevier B.V. All rights reserved.

Notes:

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Cite this Research Publication

K. Dhara, Ramachandran, Ta, Bipin G. Nair Dr., and T. G. Satheesh Babu, “Au nanoparticles decorated reduced graphene oxide for the fabrication of disposable nonenzymatic hydrogen peroxide sensor”, Journal of Electroanalytical Chemistry, vol. 764, pp. 64-70, 2016.