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Fabrication of a composite modified glassy carbon electrode: a highly selective, sensitive and rapid electrochemical sensor for silver ion detection in river water samples

In this study, a glassy carbon electrode (GCE) was modified with multi-walled carbon nanotubes (MWCNTs), 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim]PF6), N,N′-bis(2-hydroxyacetophenone)ethylenediamine (BZE) and Nafion to form a MWCNT-BZE-[bmim]PF6-Nafion-GCE. The electrochemical behaviou...

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Main Authors: Azhari, S., Sathishkumar, P., Ahamad, R., Ahmad, F., Yusoff, A. R. M.
Format: Article
Published: Royal Society of Chemistry 2016
Subjects:
QD Chemistry
Online Access:http://eprints.utm.my/id/eprint/72293/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84978745361&doi=10.1039%2fc6ay01336h&partnerID=40&md5=fa37b3ec682c734d24111b2a75a7e63e
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spelling my.utm.722932017-11-23T06:19:25Z http://eprints.utm.my/id/eprint/72293/ Fabrication of a composite modified glassy carbon electrode: a highly selective, sensitive and rapid electrochemical sensor for silver ion detection in river water samples Azhari, S. Sathishkumar, P. Ahamad, R. Ahmad, F. Yusoff, A. R. M. QD Chemistry In this study, a glassy carbon electrode (GCE) was modified with multi-walled carbon nanotubes (MWCNTs), 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim]PF6), N,N′-bis(2-hydroxyacetophenone)ethylenediamine (BZE) and Nafion to form a MWCNT-BZE-[bmim]PF6-Nafion-GCE. The electrochemical behaviour of the modified electrode with respect to silver (Ag(i)) ion detection was studied by cyclic voltammetry (CV) and differential pulse anodic stripping voltammetry (DPASV). Furthermore, the experimental parameters including the pH value of Britton-Robinson Buffer (BRB), Nafion, MWCNTs, BZE and ([bmim]PF6) concentrations and the deposition potential and time were optimized. The detection limit of the modified electrode for the Ag(i) ion was found to be 70 ng L-1 (6.49 × 10-10 mol L-1). Repetitive measurements revealed good reproducibility with a relative standard deviation (RSD) value of 0.4%. The system performance of the modified electrode was highly satisfactory and the recoveries for river water samples were found to be 96-121%. This study proved that the MWCNT-BZE-[bmim]PF6-Nafion-GCE is a highly selective and sensitive modified electrode for the detection of the Ag(i) ion in river water samples with good recovery value. Royal Society of Chemistry 2016 Article PeerReviewed Azhari, S. and Sathishkumar, P. and Ahamad, R. and Ahmad, F. and Yusoff, A. R. M. (2016) Fabrication of a composite modified glassy carbon electrode: a highly selective, sensitive and rapid electrochemical sensor for silver ion detection in river water samples. Analytical Methods, 8 (28). pp. 5712-5721. ISSN 1759-9660 https://www.scopus.com/inward/record.uri?eid=2-s2.0-84978745361&doi=10.1039%2fc6ay01336h&partnerID=40&md5=fa37b3ec682c734d24111b2a75a7e63e
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic QD Chemistry
spellingShingle QD Chemistry
Azhari, S.
Sathishkumar, P.
Ahamad, R.
Ahmad, F.
Yusoff, A. R. M.
Fabrication of a composite modified glassy carbon electrode: a highly selective, sensitive and rapid electrochemical sensor for silver ion detection in river water samples
description In this study, a glassy carbon electrode (GCE) was modified with multi-walled carbon nanotubes (MWCNTs), 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim]PF6), N,N′-bis(2-hydroxyacetophenone)ethylenediamine (BZE) and Nafion to form a MWCNT-BZE-[bmim]PF6-Nafion-GCE. The electrochemical behaviour of the modified electrode with respect to silver (Ag(i)) ion detection was studied by cyclic voltammetry (CV) and differential pulse anodic stripping voltammetry (DPASV). Furthermore, the experimental parameters including the pH value of Britton-Robinson Buffer (BRB), Nafion, MWCNTs, BZE and ([bmim]PF6) concentrations and the deposition potential and time were optimized. The detection limit of the modified electrode for the Ag(i) ion was found to be 70 ng L-1 (6.49 × 10-10 mol L-1). Repetitive measurements revealed good reproducibility with a relative standard deviation (RSD) value of 0.4%. The system performance of the modified electrode was highly satisfactory and the recoveries for river water samples were found to be 96-121%. This study proved that the MWCNT-BZE-[bmim]PF6-Nafion-GCE is a highly selective and sensitive modified electrode for the detection of the Ag(i) ion in river water samples with good recovery value.
format Article
author Azhari, S.
Sathishkumar, P.
Ahamad, R.
Ahmad, F.
Yusoff, A. R. M.
author_facet Azhari, S.
Sathishkumar, P.
Ahamad, R.
Ahmad, F.
Yusoff, A. R. M.
author_sort Azhari, S.
title Fabrication of a composite modified glassy carbon electrode: a highly selective, sensitive and rapid electrochemical sensor for silver ion detection in river water samples
title_short Fabrication of a composite modified glassy carbon electrode: a highly selective, sensitive and rapid electrochemical sensor for silver ion detection in river water samples
title_full Fabrication of a composite modified glassy carbon electrode: a highly selective, sensitive and rapid electrochemical sensor for silver ion detection in river water samples
title_fullStr Fabrication of a composite modified glassy carbon electrode: a highly selective, sensitive and rapid electrochemical sensor for silver ion detection in river water samples
title_full_unstemmed Fabrication of a composite modified glassy carbon electrode: a highly selective, sensitive and rapid electrochemical sensor for silver ion detection in river water samples
title_sort fabrication of a composite modified glassy carbon electrode: a highly selective, sensitive and rapid electrochemical sensor for silver ion detection in river water samples
publisher Royal Society of Chemistry
publishDate 2016
url http://eprints.utm.my/id/eprint/72293/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84978745361&doi=10.1039%2fc6ay01336h&partnerID=40&md5=fa37b3ec682c734d24111b2a75a7e63e
_version_ 1643656402734940160
score 13.211869

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