Development of a glucose biosensor using advanced electrode modified by nanohybrid composing chemically modified graphene and ionic liquid

Min Ho Yang; Bong Gill Choi; Ho Seok Park; Won Hi Hong; Sang Yup Lee; Tae Jung Park

doi:10.1002/elan.200900556

Development of a glucose biosensor using advanced electrode modified by nanohybrid composing chemically modified graphene and ionic liquid

Min Ho Yang, Bong Gill Choi, Ho Seok Park, Won Hi Hong, Sang Yup Lee, Tae Jung Park

Research output: Contribution to journal › Article › peer-review

85 Scopus citations

Abstract

Nanohybrids of chemically modified graphene (CMG) and ionic liquid (IL) were prepared by sonication to modify the electrode. The modified CMG-IL electrodes showed a higher current and smaller peak-to-peak potential separation than a bare electrode due to the promoted electron transfer rate. Furthermore, the glucose oxidase (GOx) immobilized on the modified electrode displayed direct electron transfer rate and symmetrical redox potentials with a linear relationship at different scan rates. The fabricated GOx/CMG-IL electrodes were developed selective glucose biosensor with respect to a sensitivity of 0.64 μA mM^-1, detection limit of 0.376 mM, and response time of < 5 s.

Original language	English
Pages (from-to)	1223-1228
Number of pages	6
Journal	Electroanalysis
Volume	22
Issue number	11
DOIs	https://doi.org/10.1002/elan.200900556
State	Published - Jun 2010
Externally published	Yes

Keywords

Biosensors
Chemically modified electrode
Electrochemistry
Electron transfer
Glucose biosensor
Ionic liquids

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10.1002/elan.200900556

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title = "Development of a glucose biosensor using advanced electrode modified by nanohybrid composing chemically modified graphene and ionic liquid",

abstract = "Nanohybrids of chemically modified graphene (CMG) and ionic liquid (IL) were prepared by sonication to modify the electrode. The modified CMG-IL electrodes showed a higher current and smaller peak-to-peak potential separation than a bare electrode due to the promoted electron transfer rate. Furthermore, the glucose oxidase (GOx) immobilized on the modified electrode displayed direct electron transfer rate and symmetrical redox potentials with a linear relationship at different scan rates. The fabricated GOx/CMG-IL electrodes were developed selective glucose biosensor with respect to a sensitivity of 0.64 μA mM-1, detection limit of 0.376 mM, and response time of < 5 s.",

keywords = "Biosensors, Chemically modified electrode, Electrochemistry, Electron transfer, Glucose biosensor, Ionic liquids",

author = "Yang, \{Min Ho\} and Choi, \{Bong Gill\} and Park, \{Ho Seok\} and Hong, \{Won Hi\} and Lee, \{Sang Yup\} and Park, \{Tae Jung\}",

year = "2010",

month = jun,

doi = "10.1002/elan.200900556",

language = "English",

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pages = "1223--1228",

journal = "Electroanalysis",

issn = "1040-0397",

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T1 - Development of a glucose biosensor using advanced electrode modified by nanohybrid composing chemically modified graphene and ionic liquid

AU - Yang, Min Ho

AU - Choi, Bong Gill

AU - Park, Ho Seok

AU - Hong, Won Hi

AU - Lee, Sang Yup

AU - Park, Tae Jung

PY - 2010/6

Y1 - 2010/6

N2 - Nanohybrids of chemically modified graphene (CMG) and ionic liquid (IL) were prepared by sonication to modify the electrode. The modified CMG-IL electrodes showed a higher current and smaller peak-to-peak potential separation than a bare electrode due to the promoted electron transfer rate. Furthermore, the glucose oxidase (GOx) immobilized on the modified electrode displayed direct electron transfer rate and symmetrical redox potentials with a linear relationship at different scan rates. The fabricated GOx/CMG-IL electrodes were developed selective glucose biosensor with respect to a sensitivity of 0.64 μA mM-1, detection limit of 0.376 mM, and response time of < 5 s.

AB - Nanohybrids of chemically modified graphene (CMG) and ionic liquid (IL) were prepared by sonication to modify the electrode. The modified CMG-IL electrodes showed a higher current and smaller peak-to-peak potential separation than a bare electrode due to the promoted electron transfer rate. Furthermore, the glucose oxidase (GOx) immobilized on the modified electrode displayed direct electron transfer rate and symmetrical redox potentials with a linear relationship at different scan rates. The fabricated GOx/CMG-IL electrodes were developed selective glucose biosensor with respect to a sensitivity of 0.64 μA mM-1, detection limit of 0.376 mM, and response time of < 5 s.

KW - Biosensors

KW - Chemically modified electrode

KW - Electrochemistry

KW - Electron transfer

KW - Glucose biosensor

KW - Ionic liquids

UR - https://www.scopus.com/pages/publications/77953313533

U2 - 10.1002/elan.200900556

DO - 10.1002/elan.200900556

M3 - Article

AN - SCOPUS:77953313533

SN - 1040-0397

VL - 22

SP - 1223

EP - 1228

JO - Electroanalysis

JF - Electroanalysis

IS - 11

ER -

Development of a glucose biosensor using advanced electrode modified by nanohybrid composing chemically modified graphene and ionic liquid

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