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Nonenzymatic amperometric glucose sensor based on nanoporous gold/ruthenium electrode

Title
Nonenzymatic amperometric glucose sensor based on nanoporous gold/ruthenium electrode
Authors
Shim J.H.Cha A.Lee Y.Lee C.
Ewha Authors
이종목이영미심준호
SCOPUS Author ID
이종목scopus; 이영미scopus
Issue Date
2011
Journal Title
Electroanalysis
ISSN
1040-0397JCR Link
Citation
vol. 23, no. 9, pp. 2057 - 2062
Indexed
SCI; SCIE; SCOPUS WOS scopus
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. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
DOI
10.1002/elan.201100174
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자연과학대학 > 화학·나노과학전공 > Journal papers
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