Spontaneous deposition of prussian blue on reduced graphene oxide - gold nanoparticles composites for the fabrication of electrochemical biosensors

Xiaoyun Bai; Kwok Keung SHIU

doi:10.1002/elan.201400358

Spontaneous deposition of prussian blue on reduced graphene oxide - gold nanoparticles composites for the fabrication of electrochemical biosensors

Xiaoyun Bai, Kwok Keung SHIU^*

^*Corresponding author for this work

Department of Chemistry

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

21 Citations (Scopus)

Abstract

A reduced graphene oxide-gold nanoparticles-Prussian blue (RGO-AuNPs-PB) composite was prepared by spontaneous deposition of PB on RGO-AuNPs surface. The GC/RGO-AuNPs-PB modified electrode offered good electrocatalytic activity toward the reduction of hydrogen peroxide, indicating the possible synergistic effects of the RGO-AuNPs-PB composite material. Direct electron transfer of glucose oxidase (GOD) can be realized after codeposition of GOD and chitosan (CHIT) coating on GC/RGO-AuNPs-PB electrode. The resulting GC/RGO-AuNPs-PB/GOD-CHIT biosensor exhibited an excellent amperometric response to glucose with a sensitivity of 84mAM^-1cm^-2, and a linear range from 13μM to 2.0mM at +0.1V vs. Ag|AgCl reference.

Original language	English
Pages (from-to)	74-83
Number of pages	10
Journal	Electroanalysis
Volume	27
Issue number	1
DOIs	https://doi.org/10.1002/elan.201400358
Publication status	Published - 1 Jan 2015

Scopus Subject Areas

Analytical Chemistry
Electrochemistry

User-Defined Keywords

Biosensors
Composite materials
Prussian blue
Reduced graphene oxide
Spontaneous deposition

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10.1002/elan.201400358

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title = "Spontaneous deposition of prussian blue on reduced graphene oxide - gold nanoparticles composites for the fabrication of electrochemical biosensors",

abstract = "A reduced graphene oxide-gold nanoparticles-Prussian blue (RGO-AuNPs-PB) composite was prepared by spontaneous deposition of PB on RGO-AuNPs surface. The GC/RGO-AuNPs-PB modified electrode offered good electrocatalytic activity toward the reduction of hydrogen peroxide, indicating the possible synergistic effects of the RGO-AuNPs-PB composite material. Direct electron transfer of glucose oxidase (GOD) can be realized after codeposition of GOD and chitosan (CHIT) coating on GC/RGO-AuNPs-PB electrode. The resulting GC/RGO-AuNPs-PB/GOD-CHIT biosensor exhibited an excellent amperometric response to glucose with a sensitivity of 84mAM-1cm-2, and a linear range from 13μM to 2.0mM at +0.1V vs. Ag|AgCl reference.",

keywords = "Biosensors, Composite materials, Prussian blue, Reduced graphene oxide, Spontaneous deposition",

author = "Xiaoyun Bai and SHIU, {Kwok Keung}",

note = "Publisher Copyright: {\textcopyright} 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.",

year = "2015",

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doi = "10.1002/elan.201400358",

language = "English",

volume = "27",

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journal = "Electroanalysis",

issn = "1040-0397",

publisher = "Wiley-VCH Verlag",

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T1 - Spontaneous deposition of prussian blue on reduced graphene oxide - gold nanoparticles composites for the fabrication of electrochemical biosensors

AU - Bai, Xiaoyun

AU - SHIU, Kwok Keung

PY - 2015/1/1

Y1 - 2015/1/1

N2 - A reduced graphene oxide-gold nanoparticles-Prussian blue (RGO-AuNPs-PB) composite was prepared by spontaneous deposition of PB on RGO-AuNPs surface. The GC/RGO-AuNPs-PB modified electrode offered good electrocatalytic activity toward the reduction of hydrogen peroxide, indicating the possible synergistic effects of the RGO-AuNPs-PB composite material. Direct electron transfer of glucose oxidase (GOD) can be realized after codeposition of GOD and chitosan (CHIT) coating on GC/RGO-AuNPs-PB electrode. The resulting GC/RGO-AuNPs-PB/GOD-CHIT biosensor exhibited an excellent amperometric response to glucose with a sensitivity of 84mAM-1cm-2, and a linear range from 13μM to 2.0mM at +0.1V vs. Ag|AgCl reference.

AB - A reduced graphene oxide-gold nanoparticles-Prussian blue (RGO-AuNPs-PB) composite was prepared by spontaneous deposition of PB on RGO-AuNPs surface. The GC/RGO-AuNPs-PB modified electrode offered good electrocatalytic activity toward the reduction of hydrogen peroxide, indicating the possible synergistic effects of the RGO-AuNPs-PB composite material. Direct electron transfer of glucose oxidase (GOD) can be realized after codeposition of GOD and chitosan (CHIT) coating on GC/RGO-AuNPs-PB electrode. The resulting GC/RGO-AuNPs-PB/GOD-CHIT biosensor exhibited an excellent amperometric response to glucose with a sensitivity of 84mAM-1cm-2, and a linear range from 13μM to 2.0mM at +0.1V vs. Ag|AgCl reference.

KW - Biosensors

KW - Composite materials

KW - Prussian blue

KW - Reduced graphene oxide

KW - Spontaneous deposition

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DO - 10.1002/elan.201400358

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Spontaneous deposition of prussian blue on reduced graphene oxide - gold nanoparticles composites for the fabrication of electrochemical biosensors

Abstract

Scopus Subject Areas

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