Gold electrodes with rough surfaces. The Golden Hedgehog Project

Hydrous gold (Au) oxide, on polycrystalline Au (Au (poly)) electrode was in situ electrogenerated by multi-potential step amperometric (MPSA) technique between 2.2 V and 0.8 V with pulse time 0.001 s at each potential in 0.5 M H 2 SO 4 solution for different times between 5-60 s. Electrodes with active gold over layers (agol) on the Au (poly) electrode (agolAu (poly)) were generated by electroreduction of the hydrous Au oxide formed by MPSA technique. The agolAu (poly) electrodes were characterized by reductive desorption of cysteine self-assembled monolayer (Cyst-SAM) and oxidative stripping of electrodeposited Pb. The in situ fabricated agolAu (poly) electrode surface was found to be enriched in Au(100) and Au(110) domains as compared with the untreated Au (poly) electrode. Oxygen reduction reaction at the agolAu (poly) electrode was carried out in 0.5 M H 2 SO 4 solution. A significant catalysis of the ORR was achieved. The catalytic properties were explained in terms of crystalline domains and roughness factor of the Au electrode.

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Gold electrodes with rough surfaces. The Golden Hedgehog Project

Cited by 2 publications

References 18 publications

Electrochemical fabrication of decomposable three-dimensional Au nano-coral structure and its surface-enhanced Raman scattering (SERS)

Electrochemical fabrication of decomposable three-dimensional Au nano-coral structure and its surface-enhanced Raman scattering (SERS)

Oxygen Reduction Reaction at in Situ Fabricated Active Gold Over Layers in Acidic Media

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