A non-enzymatic amperometric hydrogen peroxide sensor based on iron nanoparticles decorated reduced graphene oxide nanocomposite

Amanulla, B, Palanisamy, S, Chen, SM, Velusamy, V, Chiu, TW, Chen, TW and Ramaraj, SK (2017) A non-enzymatic amperometric hydrogen peroxide sensor based on iron nanoparticles decorated reduced graphene oxide nanocomposite. Journal of Colloid and Interface Science, 487. pp. 370-377. ISSN 0021-9797

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Official URL: https://doi.org/10.1016/j.jcis.2016.10.050

Abstract

© 2016 Elsevier Inc. A simple and facile green process was used for the synthesis of iron nanoparticles (FeNPs) decorated reduced graphene oxide (rGO) nanocomposite by using Ipomoea pes-tigridis leaf extract as a reducing and stabilizing agent. The as-prepared rGO/FeNPs nanocomposite was characterized by transmission electron microscopy, X-ray spectroscopy and Fourier transform infrared spectroscopy. The nanocomposite was further modified on the glassy carbon electrode and used for non-enzymatic sensing of hydrogen peroxide (H2O2). Cyclic voltammetry results reveal that rGO/FeNPs nanocomposite has excellent electro-reduction behavior to H2O2 when compared to the response of FeNPs and rGO modified electrodes. Furthermore, the nanocomposite modified electrode shows 9 and 6 folds enhanced reduction current response to H2O2 than that of rGO and FeNPs modified electrodes. Amperometric method was further used to quantify the H2O2 using rGO/FeNPs nanocomposite, and the response was linear over the concentration ranging from 0.1 μM to 2.15 mM. The detection limit and sensitivity of the sensor were estimated as 0.056 μM and 0.2085 μA μM−1 cm−2, respectively. The fabricated sensor also utilized for detection of H2O2 in the presence of potentially active interfering species, and found high selectivity towards H2O2.

Item Type:	Article (Article)
Peer-reviewed:	Yes
Date Deposited:	01 Dec 2017 11:09
Publisher:	Elsevier
Additional Information:	This is an Author Accepted Manuscript of a paper accepted for publication in Journal of Colloid and Interface Science, published by and copyright Elsevier.
Divisions:	Faculties > Science and Engineering
Subject terms:	Science & Technology, Physical Sciences, Chemistry, Physical, Chemistry, Reduced graphene oxide, Iron nanoparticles, Ipomoea pes-tigridis leaf extract, Hydrogen peroxide, Non-enzymatic sensor, GREEN SYNTHESIS, DIRECT ELECTROCHEMISTRY, GOLD NANOPARTICLES, MODIFIED ELECTRODE, REDUCTION, BIOSENSOR, SILVER, HEMOGLOBIN, PARTICLES, NANOTUBES, Ipomoea, Plant Leaves, Oxides, Hydrogen Peroxide, Graphite, Iron, Plant Extracts, Electrodes, Oxidation-Reduction, Hydrogen-Ion Concentration, Nanocomposites, Metal Nanoparticles, Electrochemical Techniques, Limit of Detection, Hydrogen peroxide, Ipomoea pes-tigridis leaf extract, Iron nanoparticles, Non-enzymatic sensor, Reduced graphene oxide, Electrochemical Techniques, Electrodes, Graphite, Hydrogen Peroxide, Hydrogen-Ion Concentration, Ipomoea, Iron, Limit of Detection, Metal Nanoparticles, Nanocomposites, Oxidation-Reduction, Oxides, Plant Extracts, Plant Leaves, 03 Chemical Sciences, 09 Engineering, 02 Physical Sciences, Chemical Physics
URI:	https://e-space.mmu.ac.uk/id/eprint/619518
DOI:	https://doi.org/10.1016/j.jcis.2016.10.050
ISSN	0021-9797

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