Journal of the Korean Electrochemical Society (전기화학회지)

The Korean Electrochemical Society (한국전기화학회)
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Electrocatalytic Reduction of Hydrogen Peroxide at Nanoporous Gold Surfaces

  • Park, You-Hoon (Department of Chemistry, Chungbuk National University) ;
  • Kim, Jong-Won (Department of Chemistry, Chungbuk National University)
  • Received : 2010.08.06
  • Accepted : 2010.08.18
  • Published : 2010.11.30
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Abstract

We report on the electrocatalytic reduction of hydrogen peroxide at nanoporous gold (NPG) surfaces. Various NPG surfaces with different surface structure were prepared by changing the conditions of electrodeposition for Ag-Au layers such as the concentration ratios of $KAu(CN)_2$ over $KAg(CN)_2$ and deposition charges. The effects of different electrochemical conditions on the electrocatalysis of $H_2O_2$ reduction were investigated. The NPG surfaces exhibited sensitive amperometric responses for $H_2O_2$ reduction, from which calibration plots with higher sensitivity than a bare Au surface were obtained.

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