Glucose Sensor Based on Au-Pt Black Electrode-Preparation of Functionally Different Sites on Electrode Surface

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  • TAKEI Osamu
    Research Institute, National Rehabilitation Center for the Disabled Department of Applied Chemistry, Faculty of Engineering, Toyo University
  • TOYAMA Shigeru
    Research Institute, National Rehabilitation Center for the Disabled
  • SOMEYA Masayuki
    Department of Applied Chemistry, Faculty of Engineering, Toyo University
  • KUROKAWA Tomoko
    Research Institute, National Rehabilitation Center for the Disabled
  • USAMI Ron
    Department of Applied Chemistry, Faculty of Engineering, Toyo University
  • HORIKOSI Koki
    Department of Applied Chemistry, Faculty of Engineering, Toyo University
  • IKARIYAMA Yoshihito
    Research Institute, National Rehabilitation Center for the Disabled

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Abstract

<p>An enzyme sensor (glucose sensor) based on a composite metal (Au and Pt) black electrode, which was fabricated by simultaneously codepositing gold and platinum electrode, has been developed. In this sensor, enzyme was immobilized at the gold sites on the electrode surface, and the enzymatic product was oxidized at platinum sites. The largest current response was obtained when the electrode was prepared in an electrodepositional solution containing 40:60 mol% gold and platinum complexes. The existence of such an optimal mixing ratio suggested functionally different roles of gold and platinum sites on the electrode.</p>

Journal

  • Electrochemistry

    Electrochemistry 69 (12), 956-958, 2001-12-05

    The Electrochemical Society of Japan

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