Direct electrochemistry of glucose oxidase at carbon nanotube-gold colloid modified electrode with poly(diallyldimethylammonium chloride) coating

Yan-Li Yao; Kwok Keung Shiu

doi:10.1002/elan.200804209

Direct electrochemistry of glucose oxidase at carbon nanotube-gold colloid modified electrode with poly(diallyldimethylammonium chloride) coating

Yan-Li Yao^*, Kwok Keung Shiu

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Journal article › peer-review

92 Citations (Scopus)

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Abstract

Glucose oxidase showed direct electrochemical transfer at glassy carbon electrodes immobilized with carbon nanotube-gold colloid (CNT-Au) composites with poly(diallydimethylammonium chloride) (PDDA) coatings. The modified electrode (GC/CNT/Au/PDDA-GOD) was employed for the amperometric determination of glucose. Under optimal conditions, the biosensor displayed linear response to glucose from 0.5 to 5 mM with a sensitivity of 2.50 mA M^-1 at an applied potential of -0.3 V (vs. Ag|AgCl reference).

Original language	English
Pages (from-to)	1542-1548
Number of pages	7
Journal	Electroanalysis
Volume	20
Issue number	14
DOIs	https://doi.org/10.1002/elan.200804209
Publication status	Published - Jul 2008

Scopus Subject Areas

Analytical Chemistry
Electrochemistry

User-Defined Keywords

Carbon nanotubes
Direct electrochemistry
Glucose biosensor
Gold nanoparticles
Poly(diallyldimethylammonium chloride)

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10.1002/elan.200804209

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title = "Direct electrochemistry of glucose oxidase at carbon nanotube-gold colloid modified electrode with poly(diallyldimethylammonium chloride) coating",

abstract = "Glucose oxidase showed direct electrochemical transfer at glassy carbon electrodes immobilized with carbon nanotube-gold colloid (CNT-Au) composites with poly(diallydimethylammonium chloride) (PDDA) coatings. The modified electrode (GC/CNT/Au/PDDA-GOD) was employed for the amperometric determination of glucose. Under optimal conditions, the biosensor displayed linear response to glucose from 0.5 to 5 mM with a sensitivity of 2.50 mA M-1 at an applied potential of -0.3 V (vs. Ag|AgCl reference).",

keywords = "Carbon nanotubes, Direct electrochemistry, Glucose biosensor, Gold nanoparticles, Poly(diallyldimethylammonium chloride)",

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AU - Yao, Yan-Li

AU - Shiu, Kwok Keung

PY - 2008/7

Y1 - 2008/7

N2 - Glucose oxidase showed direct electrochemical transfer at glassy carbon electrodes immobilized with carbon nanotube-gold colloid (CNT-Au) composites with poly(diallydimethylammonium chloride) (PDDA) coatings. The modified electrode (GC/CNT/Au/PDDA-GOD) was employed for the amperometric determination of glucose. Under optimal conditions, the biosensor displayed linear response to glucose from 0.5 to 5 mM with a sensitivity of 2.50 mA M-1 at an applied potential of -0.3 V (vs. Ag|AgCl reference).

AB - Glucose oxidase showed direct electrochemical transfer at glassy carbon electrodes immobilized with carbon nanotube-gold colloid (CNT-Au) composites with poly(diallydimethylammonium chloride) (PDDA) coatings. The modified electrode (GC/CNT/Au/PDDA-GOD) was employed for the amperometric determination of glucose. Under optimal conditions, the biosensor displayed linear response to glucose from 0.5 to 5 mM with a sensitivity of 2.50 mA M-1 at an applied potential of -0.3 V (vs. Ag|AgCl reference).

KW - Carbon nanotubes

KW - Direct electrochemistry

KW - Glucose biosensor

KW - Gold nanoparticles

KW - Poly(diallyldimethylammonium chloride)

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JO - Electroanalysis

JF - Electroanalysis

IS - 14

ER -

Direct electrochemistry of glucose oxidase at carbon nanotube-gold colloid modified electrode with poly(diallyldimethylammonium chloride) coating

Abstract

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