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A new highly conducting carbon black (CL-08) modified electrode functionalized with syringic acid for sensitive and selective L-cysteine electrocatalysis at low potential

Highly selective, sensitive and low potential detection of biological analytes by simple and rapid electrochemical technique using low cost nanocarbons is a demanding research since last decade. Herein, we report a low cost, new, nanocarbon, the carbon black (CL-08) functionalized with syringic acid...

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Main Authors: Sundaram, Sornambikai, Abdul Kadir, Mohammed Rafiq
Format: Article
Published: Elsevier 2017
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TJ Mechanical engineering and machinery
Online Access:http://eprints.utm.my/id/eprint/66354/
http://dx.doi.org/10.1016/j.electacta.2016.12.093
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spelling my.utm.663542017-11-30T01:03:31Z http://eprints.utm.my/id/eprint/66354/ A new highly conducting carbon black (CL-08) modified electrode functionalized with syringic acid for sensitive and selective L-cysteine electrocatalysis at low potential Sundaram, Sornambikai Abdul Kadir, Mohammed Rafiq TJ Mechanical engineering and machinery Highly selective, sensitive and low potential detection of biological analytes by simple and rapid electrochemical technique using low cost nanocarbons is a demanding research since last decade. Herein, we report a low cost, new, nanocarbon, the carbon black (CL-08) functionalized with syringic acid (SA) modified glassy carbon electrode (GCE) for selective L-cysteine (L-CySH) electrocatalysis at 0.04 V vs Ag/AgCl. The new matrix is competitive in the low potential L-CySH detection compared to the multiwalled carbon nanotube, graphite powder, carbon mesoporous and graphitized mesoporous carbon. The possible in situ generated redox products namely 2,6-dimethoxy benzoquinone and 3,4-dihydroxy-5-methoxy benzoic acid were proposed to form on the GCE/SA@CL-08 with two electron transfer and nernstian behaviours. FTIR and UV–vis analyses collectively revealed the presence of quinone species. The GCE/SA@CL-08 showed L-CySH electrocatalysis with good selectivity, 0.42 nA.μM−1 and 5.4 nA.μM−1 sensitivity in the detection range of 20–100 μM and 100–1000 μM respectively with 639 nM limit of detection, in chronoamperometry. A successful demonstration of L-CySH detection from the simulated blood serum and processed chicken samples with substantial recovery values using the GCE/SA@CL-08 were presented in this study. Elsevier 2017-01-01 Article PeerReviewed Sundaram, Sornambikai and Abdul Kadir, Mohammed Rafiq (2017) A new highly conducting carbon black (CL-08) modified electrode functionalized with syringic acid for sensitive and selective L-cysteine electrocatalysis at low potential. Electrochimica Acta, 224 . pp. 475-486. ISSN 0013-4686 http://dx.doi.org/10.1016/j.electacta.2016.12.093 DOI:10.1016/j.electacta.2016.12.093
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 TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Sundaram, Sornambikai
Abdul Kadir, Mohammed Rafiq
A new highly conducting carbon black (CL-08) modified electrode functionalized with syringic acid for sensitive and selective L-cysteine electrocatalysis at low potential
description Highly selective, sensitive and low potential detection of biological analytes by simple and rapid electrochemical technique using low cost nanocarbons is a demanding research since last decade. Herein, we report a low cost, new, nanocarbon, the carbon black (CL-08) functionalized with syringic acid (SA) modified glassy carbon electrode (GCE) for selective L-cysteine (L-CySH) electrocatalysis at 0.04 V vs Ag/AgCl. The new matrix is competitive in the low potential L-CySH detection compared to the multiwalled carbon nanotube, graphite powder, carbon mesoporous and graphitized mesoporous carbon. The possible in situ generated redox products namely 2,6-dimethoxy benzoquinone and 3,4-dihydroxy-5-methoxy benzoic acid were proposed to form on the GCE/SA@CL-08 with two electron transfer and nernstian behaviours. FTIR and UV–vis analyses collectively revealed the presence of quinone species. The GCE/SA@CL-08 showed L-CySH electrocatalysis with good selectivity, 0.42 nA.μM−1 and 5.4 nA.μM−1 sensitivity in the detection range of 20–100 μM and 100–1000 μM respectively with 639 nM limit of detection, in chronoamperometry. A successful demonstration of L-CySH detection from the simulated blood serum and processed chicken samples with substantial recovery values using the GCE/SA@CL-08 were presented in this study.
format Article
author Sundaram, Sornambikai
Abdul Kadir, Mohammed Rafiq
author_facet Sundaram, Sornambikai
Abdul Kadir, Mohammed Rafiq
author_sort Sundaram, Sornambikai
title A new highly conducting carbon black (CL-08) modified electrode functionalized with syringic acid for sensitive and selective L-cysteine electrocatalysis at low potential
title_short A new highly conducting carbon black (CL-08) modified electrode functionalized with syringic acid for sensitive and selective L-cysteine electrocatalysis at low potential
title_full A new highly conducting carbon black (CL-08) modified electrode functionalized with syringic acid for sensitive and selective L-cysteine electrocatalysis at low potential
title_fullStr A new highly conducting carbon black (CL-08) modified electrode functionalized with syringic acid for sensitive and selective L-cysteine electrocatalysis at low potential
title_full_unstemmed A new highly conducting carbon black (CL-08) modified electrode functionalized with syringic acid for sensitive and selective L-cysteine electrocatalysis at low potential
title_sort new highly conducting carbon black (cl-08) modified electrode functionalized with syringic acid for sensitive and selective l-cysteine electrocatalysis at low potential
publisher Elsevier
publishDate 2017
url http://eprints.utm.my/id/eprint/66354/
http://dx.doi.org/10.1016/j.electacta.2016.12.093
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score 13.211869

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