Design of Catalytically Active Cylindrical and Macroporous Gold Microelectrodes
Résumé
Porous gold structures with a well-defined pore size and thickness are obtained through electrochemical deposition of gold in a colloidal crystal template synthesized by the Langmuir–Blodgett (LB) technique. Cylindrical gold wires were used as substrates for the LB deposition of successive monolayers of silica particles of various sizes, and the electrodeposition of gold through this inorganic template led to a homogeneous, porous metal structure. These materials were characterized through typical electrochemical experiments and showed high surface-to-volume ratios with promising features for their further use in miniaturized electrocatalytic devices.