Nonenzymatic amperometric glucose sensor based on nanoporous gold/ruthenium electrode

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

Research output: Contribution to journalArticlepeer-review

31 Scopus citations


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 languageEnglish
Pages (from-to)2057-2062
Number of pages6
Issue number9
StatePublished - Sep 2011


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


Dive into the research topics of 'Nonenzymatic amperometric glucose sensor based on nanoporous gold/ruthenium electrode'. Together they form a unique fingerprint.

Cite this