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A nanoporous ruthenium oxide framework for amperometric sensing of glucose and potentiometric sensing of pH

Title
A nanoporous ruthenium oxide framework for amperometric sensing of glucose and potentiometric sensing of pH
Authors
Shim J.H.Kang M.Lee Y.Lee C.
Ewha Authors
이종목이영미
SCOPUS Author ID
이종목scopus; 이영미scopus
Issue Date
2012
Journal Title
Microchimica Acta
ISSN
0026-3672JCR Link
Citation
vol. 177, no. 41276, pp. 211 - 219
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Nanoporous ruthenium oxide frameworks (L 2-eRuO) were electrodeposited on gold substrates by repetitive potential cycling in solutions of ruthenium(III) ions in the presence of reverse neutral micelles. The L 2-eRuO was characterized in terms of direct oxidation of glucose and potentiometric response to pH values. The surface structures and morphologies of the L 2-eRuO were characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy, Raman spectroscopy, and high-resolution transmission electron microscopy. Their surface area was estimated via underpotential deposition of copper. L 2-eRuO-modified electrodes showed a 17-fold higher sensitivity (40 μA mM -1 cm -2 towards glucose in 0-4 mM concentration in solution of pH 7.4) than a RuO electrode prepared in the absence of reverse micelles. Potential interferents such as ascorbic acid, 4-acetamidophenol, uric acid and dopamine displayed no effect. The new electrode also revealed improved potentiometric response to pH changes compared to a platinum electrode of the same type. © 2012 Springer-Verlag.
DOI
10.1007/s00604-012-0774-9
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자연과학대학 > 화학·나노과학전공 > Journal papers
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