Lim, Ji-Eun Ahn, Sang Hyun Pyo, Sung Gyu Son, Hyungbin Jang, Jong Hyun Kim, Soo-Kil 2024-01-20T11:32:33Z 2024-01-20T11:32:33Z 2021-09-04 2013-09-20 0253-2964 https://pubs.kist.re.kr/handle/201004/127659 The activities of Au-modified Cu electrodes toward glucose oxidation are evaluated according to their fabrication conditions and physico-chemical properties. The Au-modified Cu electrodes are fabricated by the galvanic displacement of Au on a Cu substrate and the characteristics of the Au particles are controlled by adjusting the displacement time. From the glucose oxidation tests, it is found that the Au modified Cu has superior activity to the pure Au or Cu film, which is evidenced by the negative shift in the oxidation potential and enhanced current density during the electrochemical oxidation. Though the activity of the Au nanoparticles is a contributing factor, the enhanced activity of the Au-modified Cu electrode is due to the increased oxidation number of Cu through the electron transfer from Cu to more electronegative Au. The depletion of electron in Cu facilitates the oxidation of glucose. The stability of the Au-modified Cu electrode was also studied by chronoamperometry. English WILEY-V C H VERLAG GMBH ELECTROCATALYTIC OXIDATION BIOFUEL CELLS METHANOL OXIDATION OXYGEN REDUCTION CARBON NANOTUBES NANOPARTICLES NANOCOMPOSITE OXIDASE ENZYME ELECTROOXIDATION Glucose Oxidation on Gold-modified Copper Electrode Article 10.5012/bkcs.2013.34.9.2685 1 BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.34, no.9, pp.2685 - 2690 BULLETIN OF THE KOREAN CHEMICAL SOCIETY 34 9 2685 2690 scie scopus kci ART001802412 000330330300026 2-s2.0-84885417324 Chemistry, Multidisciplinary Chemistry Article ELECTROCATALYTIC OXIDATION BIOFUEL CELLS METHANOL OXIDATION OXYGEN REDUCTION CARBON NANOTUBES NANOPARTICLES NANOCOMPOSITE OXIDASE ENZYME ELECTROOXIDATION Glucose Bio fuel cell Electrochemical oxidation Catalyst