Direct comparison of the electrocatalytic oxidation of hydrogen by an enzyme and a platinum catalyst

Chem Commun (Camb). 2002 Apr 21:(8):866-7. doi: 10.1039/b201337a.

Abstract

It is shown that for molecules of Allochromatium vinosum [NiFe]-hydrogenase adsorbed on a pyrolytic graphite electrode the nickel-iron active site catalyzes hydrogen oxidation at a diffusion-controlled rate matching that achieved by platinum.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Catalysis
  • Chromatium / enzymology*
  • Chromatium / growth & development
  • Diffusion
  • Electrochemistry / methods
  • Electrodes
  • Electron Transport
  • Graphite / chemistry
  • Hydrogen / chemistry*
  • Hydrogenase / chemistry*
  • Oxidation-Reduction
  • Platinum / chemistry*
  • Substrate Specificity

Substances

  • Platinum
  • Graphite
  • Hydrogen
  • nickel-iron hydrogenase
  • Hydrogenase