Voltammetric Analysis of As(III) at a Cobalt Nanoparticles/Reduced Graphene Oxide Modified Exfoliated Graphite Electrode

This work presents the detection and quantification of As(III) at an exfoliated graphite electrode (EG) modified with a composite of cobalt nanoparticles and reduced graphene oxide. The materials were characterised by Raman spectroscopy and scanning electron microscopy & energy dispersive spectr...

Full description

Saved in:
Bibliographic Details
Published in:International journal of electrochemical science 2018-11, Vol.13 (11), p.10127-10140
Main Authors: Jimana, A, Peleyeju, MG, Tshwenya, L, Pillay, K, Arotiba, OA
Format: Article
Language:English
Subjects:
Arsenic
cobalt nanoparticles
exfoliated graphite electrode
reduced graphene oxide
voltammetric detection
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This work presents the detection and quantification of As(III) at an exfoliated graphite electrode (EG) modified with a composite of cobalt nanoparticles and reduced graphene oxide. The materials were characterised by Raman spectroscopy and scanning electron microscopy & energy dispersive spectroscopy. Modification of the surface of EG with the composite material led to significant improvement in its electro-active surface area and thus electrocatalytic activity. The sensor was utilised for the voltammetric analysis of As(III) in standard and real samples and the limit of detection and limit of quantification were found to be 0.31 and 1.01 ppb respectively, under optimum conditions. The proposed device can be employed for practical analytical purposes.
ISSN:1452-3981
1452-3981
DOI:10.20964/2018.11.09