Nonenzymatic amperometric glucose sensor based on nanoporous gold/ruthenium electrode

Jun Ho Shim; Areum Cha; Youngmi Lee; Chongmok Lee

doi:10.1002/elan.201100174

Nonenzymatic amperometric glucose sensor based on nanoporous gold/ruthenium electrode

Jun Ho Shim, Areum Cha, Youngmi Lee, Chongmok Lee

Department of Chemistry & Nanoscience

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

31 Scopus citations

Abstract

Nanoporous gold/ruthenium (npAu-Ru) nanocomposite catalysts were synthesized by the incorporation of Ru on npAu, which exhibited reasonable nonenzymatic glucose sensing characteristics with good sensitivity and selectivity. The structure and electrocatalytic activities of the npAu and npAu-Ru catalysts were characterized by transmission electron microscopy, energy dispersive X-ray spectroscopy and linear sweep voltammetry. To examine the detection of glucose, npAu and npAu-Ru were loaded on a glassy carbon electrode with chitosan (CHIT) as capping agent for the nanocomposites, GC/npAu/CHIT and GC/npAu-Ru/CHIT electrode, respectively. The GC/npAu-Ru/CHIT electrode showed six fold higher sensitivity (240μAmM^-1cm^-2 for the linear dynamic range) for amperometric glucose detection than the GC/npAu/CHIT electrode. This could be attributed to the incorporation of Ru. Moreover the GC/npAu-Ru/CHIT electrode displayed selectivity for glucose over biological interferents, including ascorbic acid and uric acid.

Original language	English
Pages (from-to)	2057-2062
Number of pages	6
Journal	Electroanalysis
Volume	23
Issue number	9
DOIs	https://doi.org/10.1002/elan.201100174
State	Published - Sep 2011

Keywords

Direct oxidation of glucose
Galvanic replacement reaction
Gold-ruthenium nanocomposite
Nanoporous structures
Nonenzymatic amperometric glucose sensor

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title = "Nonenzymatic amperometric glucose sensor based on nanoporous gold/ruthenium electrode",

abstract = "Nanoporous gold/ruthenium (npAu-Ru) nanocomposite catalysts were synthesized by the incorporation of Ru on npAu, which exhibited reasonable nonenzymatic glucose sensing characteristics with good sensitivity and selectivity. The structure and electrocatalytic activities of the npAu and npAu-Ru catalysts were characterized by transmission electron microscopy, energy dispersive X-ray spectroscopy and linear sweep voltammetry. To examine the detection of glucose, npAu and npAu-Ru were loaded on a glassy carbon electrode with chitosan (CHIT) as capping agent for the nanocomposites, GC/npAu/CHIT and GC/npAu-Ru/CHIT electrode, respectively. The GC/npAu-Ru/CHIT electrode showed six fold higher sensitivity (240μAmM-1cm-2 for the linear dynamic range) for amperometric glucose detection than the GC/npAu/CHIT electrode. This could be attributed to the incorporation of Ru. Moreover the GC/npAu-Ru/CHIT electrode displayed selectivity for glucose over biological interferents, including ascorbic acid and uric acid.",

keywords = "Direct oxidation of glucose, Galvanic replacement reaction, Gold-ruthenium nanocomposite, Nanoporous structures, Nonenzymatic amperometric glucose sensor",

author = "Shim, {Jun Ho} and Areum Cha and Youngmi Lee and Chongmok Lee",

year = "2011",

month = sep,

doi = "10.1002/elan.201100174",

language = "English",

volume = "23",

pages = "2057--2062",

journal = "Electroanalysis",

issn = "1040-0397",

publisher = "Wiley-VCH Verlag",

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T1 - Nonenzymatic amperometric glucose sensor based on nanoporous gold/ruthenium electrode

AU - Shim, Jun Ho

AU - Cha, Areum

AU - Lee, Youngmi

AU - Lee, Chongmok

PY - 2011/9

Y1 - 2011/9

N2 - Nanoporous gold/ruthenium (npAu-Ru) nanocomposite catalysts were synthesized by the incorporation of Ru on npAu, which exhibited reasonable nonenzymatic glucose sensing characteristics with good sensitivity and selectivity. The structure and electrocatalytic activities of the npAu and npAu-Ru catalysts were characterized by transmission electron microscopy, energy dispersive X-ray spectroscopy and linear sweep voltammetry. To examine the detection of glucose, npAu and npAu-Ru were loaded on a glassy carbon electrode with chitosan (CHIT) as capping agent for the nanocomposites, GC/npAu/CHIT and GC/npAu-Ru/CHIT electrode, respectively. The GC/npAu-Ru/CHIT electrode showed six fold higher sensitivity (240μAmM-1cm-2 for the linear dynamic range) for amperometric glucose detection than the GC/npAu/CHIT electrode. This could be attributed to the incorporation of Ru. Moreover the GC/npAu-Ru/CHIT electrode displayed selectivity for glucose over biological interferents, including ascorbic acid and uric acid.

AB - Nanoporous gold/ruthenium (npAu-Ru) nanocomposite catalysts were synthesized by the incorporation of Ru on npAu, which exhibited reasonable nonenzymatic glucose sensing characteristics with good sensitivity and selectivity. The structure and electrocatalytic activities of the npAu and npAu-Ru catalysts were characterized by transmission electron microscopy, energy dispersive X-ray spectroscopy and linear sweep voltammetry. To examine the detection of glucose, npAu and npAu-Ru were loaded on a glassy carbon electrode with chitosan (CHIT) as capping agent for the nanocomposites, GC/npAu/CHIT and GC/npAu-Ru/CHIT electrode, respectively. The GC/npAu-Ru/CHIT electrode showed six fold higher sensitivity (240μAmM-1cm-2 for the linear dynamic range) for amperometric glucose detection than the GC/npAu/CHIT electrode. This could be attributed to the incorporation of Ru. Moreover the GC/npAu-Ru/CHIT electrode displayed selectivity for glucose over biological interferents, including ascorbic acid and uric acid.

KW - Direct oxidation of glucose

KW - Galvanic replacement reaction

KW - Gold-ruthenium nanocomposite

KW - Nanoporous structures

KW - Nonenzymatic amperometric glucose sensor

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DO - 10.1002/elan.201100174

M3 - Article

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VL - 23

SP - 2057

EP - 2062

JO - Electroanalysis

JF - Electroanalysis

IS - 9

ER -

Nonenzymatic amperometric glucose sensor based on nanoporous gold/ruthenium electrode

Abstract

Keywords

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