Electrochemical preparation and characterization of a gold nanoparticles graphite electrode: Application to myricetin antioxidant analysis

Graphite material is abundantly available from recyclable sources. It possesses a good electrical conductance property, which makes it an attractive material as a working electrode. However, due to a high activation overpotential it has limited applications as compared to other solid metal elect...

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Main Authors:	Ng, K.L., Lee, S.M., Khor, S.M., Tan, G.H.
Format:	Article
Published:	2015
Subjects:	QD Chemistry
Online Access:	https://www.jstage.jst.go.jp/article/analsci/31/10/311075/pdf https://www.jstage.jst.go.jp/article/analsci/31/10/311075/pdf http://eprints.um.edu.my/15525/1/Analytical_Sciences_31(2015)1075%2D1081_(post%2Dprint_version).pdf

id	um-15525
recordtype	eprints
spelling	um-155252016-01-12T03:17:44Z Electrochemical preparation and characterization of a gold nanoparticles graphite electrode: Application to myricetin antioxidant analysis Ng, K.L. Lee, S.M. Khor, S.M. Tan, G.H. QD Chemistry Graphite material is abundantly available from recyclable sources. It possesses a good electrical conductance property, which makes it an attractive material as a working electrode. However, due to a high activation overpotential it has limited applications as compared to other solid metal electrodes. In this present work, we obtained a graphite rod from a used battery, and carried out electrochemical improvements by electro-deposition with gold nanoparticles (AuNPs). The heterogeneous electron transfer rate and electron transfer resistance of the fabricated electrode were improved. The electrode overpotential has shown improvement by 50 mV, and the effective surface area has increased by 2 fold. To determine the practicability of the AuNPs/graphite electrode, we used the electrode in the analysis of myricetin. A square- wave voltammetry was used in the analysis, and the detection response increased by 2.5 fold, which suggested an improvement in the electrode sensitivity. 2015 Article PeerReviewed application/pdf http://eprints.um.edu.my/15525/1/Analytical_Sciences_31(2015)1075%2D1081_(post%2Dprint_version).pdf https://www.jstage.jst.go.jp/article/analsci/31/10/311075/pdf Ng, K.L.; Lee, S.M.; Khor, S.M.; Tan, G.H. (2015) Electrochemical preparation and characterization of a gold nanoparticles graphite electrode: Application to myricetin antioxidant analysis. Analytical Sciences <http://eprints.um.edu.my/view/publication/Analytical_Sciences.html>, 31 (10). pp. 1075-1081. http://eprints.um.edu.my/15525/
repository_type	Digital Repository
institution_category	Local University
institution	University Malaya
building	UM Research Repository
collection	Online Access
topic	QD Chemistry
spellingShingle	QD Chemistry Ng, K.L. Lee, S.M. Khor, S.M. Tan, G.H. Electrochemical preparation and characterization of a gold nanoparticles graphite electrode: Application to myricetin antioxidant analysis
description	Graphite material is abundantly available from recyclable sources. It possesses a good electrical conductance property, which makes it an attractive material as a working electrode. However, due to a high activation overpotential it has limited applications as compared to other solid metal electrodes. In this present work, we obtained a graphite rod from a used battery, and carried out electrochemical improvements by electro-deposition with gold nanoparticles (AuNPs). The heterogeneous electron transfer rate and electron transfer resistance of the fabricated electrode were improved. The electrode overpotential has shown improvement by 50 mV, and the effective surface area has increased by 2 fold. To determine the practicability of the AuNPs/graphite electrode, we used the electrode in the analysis of myricetin. A square- wave voltammetry was used in the analysis, and the detection response increased by 2.5 fold, which suggested an improvement in the electrode sensitivity.
format	Article
author	Ng, K.L. Lee, S.M. Khor, S.M. Tan, G.H.
author_facet	Ng, K.L. Lee, S.M. Khor, S.M. Tan, G.H.
author_sort	Ng, K.L.
title	Electrochemical preparation and characterization of a gold nanoparticles graphite electrode: Application to myricetin antioxidant analysis
title_short	Electrochemical preparation and characterization of a gold nanoparticles graphite electrode: Application to myricetin antioxidant analysis
title_full	Electrochemical preparation and characterization of a gold nanoparticles graphite electrode: Application to myricetin antioxidant analysis
title_fullStr	Electrochemical preparation and characterization of a gold nanoparticles graphite electrode: Application to myricetin antioxidant analysis
title_full_unstemmed	Electrochemical preparation and characterization of a gold nanoparticles graphite electrode: Application to myricetin antioxidant analysis
title_sort	electrochemical preparation and characterization of a gold nanoparticles graphite electrode: application to myricetin antioxidant analysis
publishDate	2015
url	https://www.jstage.jst.go.jp/article/analsci/31/10/311075/pdf https://www.jstage.jst.go.jp/article/analsci/31/10/311075/pdf http://eprints.um.edu.my/15525/1/Analytical_Sciences_31(2015)1075%2D1081_(post%2Dprint_version).pdf
first_indexed	2018-09-06T06:30:58Z
last_indexed	2018-09-06T06:30:58Z
_version_	1610838660974903296

Electrochemical preparation and characterization of a gold nanoparticles graphite electrode: Application to myricetin antioxidant analysis

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