Screen-Printed Electrode Surface Modification with NiCo2O4/RGO Nanocomposite for Hydroxylamine Detection

We developed a novel hydroxylamine sensor through the surface modification of screen-printed electrode (SPE) with NiCo2O4 nanoparticles/reduced graphene oxide (RGO) nanocomposite (NiCo2O4/RGO/SPE). We assessed the electrochemical response of hydroxylamine on the as-fabricated sensor, confirming the...

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Bibliographic Details
Published in:Nanomaterials (Basel, Switzerland) Switzerland), 2021-11, Vol.11 (12), p.3208
Main Authors: Tajik, Somayeh, Beitollahi, Hadi, Ahmadi, Sayed ali, Askari, Mohammad Bagher, Di Bartolomeo, Antonio
Format: Article
Language:English
Subjects:
Carbon
Chromatography
Composite materials
Electrochemistry
Electrodes
Graphene
Graphite
Hydroxylamine
Morphology
Nanocomposites
Nanomaterials
Nanoparticles
Nickel compounds
NiCo2O4/RGO nanocomposite
Oxidation
screen-printed electrode
voltammetry
Water analysis
Water sampling
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Summary:We developed a novel hydroxylamine sensor through the surface modification of screen-printed electrode (SPE) with NiCo2O4 nanoparticles/reduced graphene oxide (RGO) nanocomposite (NiCo2O4/RGO/SPE). We assessed the electrochemical response of hydroxylamine on the as-fabricated sensor, confirming the high electrocatalytic impact of hydroxylamine oxidation. The electrode produced sensitively responded to hydroxylamine under optimized conditions, with a low limit of detection (2.0 nM) and broad linear dynamic range (0.007–385.0 µM). The presence of NiCo2O4 combined with the modification of RGO resulted in sensitive detection and signal amplification of hydroxylamine oxidation. The proposed sensor was used to determine the existence of hydroxylamine in water samples.
ISSN:2079-4991
2079-4991
DOI:10.3390/nano11123208