The effect of electrochemical pretreatment on the catalytic activity of carbon-supported gold nanoparticles for NADH oxidation

Jun Ho Shim, Jiyoung Kim, Ara Go, Chongmok Lee, Youngmi Lee

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

The electrochemical oxidation of nicotinamide adenine dinucleotide (NADH) is studied systematically on four types of electrodes, i.e., glassy carbon (GC), carbon (C), Au nanoparticles (AuNP), and C-supported AuNP (AuNP/C) in a 0.05 M phosphate buffer solution (pH 7.4) before and after the electrochemical pretreatment carried out by repetitive potential scanning between -0.2 V and 1.0 V (vs. SCE) for 100 cycles. This simple pretreatment improves the electrocatalytic activity of the AuNP/C toward the NADH oxidation remarkably, suggesting the key role of Au oxide layers in facilitating the NADH electrochemical oxidation.

Original languageEnglish
Pages (from-to)330-333
Number of pages4
JournalMaterials Letters
Volume91
DOIs
StatePublished - 15 Jan 2013

Keywords

  • Electrocatalysis
  • Electrochemical pretreatment
  • Gold nanoparticle
  • Gold oxide
  • NADH oxidation

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