Influence of Plasmonic Au Nanoparticles on the Photoactivity of Fe2O3 Electrodes for Water Splitting
An experimental study of the influence of gold nanoparticles on a alpha-Fe2O3 photoanodes for photoelectrochemical water splitting is described. A relative enhancement in the water splitting efficiency at photon frequencies corresponding to the plasmon resonance in gold was observed. This relative enhancement was observed only for electrode geometries with metal particles that were localized at the semiconductor-electrolyte interface consistent with the observation that minority carrier transport to the electrolyte is the most significant impediment to achieving high efficiencies in this system.
Keywords: Photoelectrochemical water splitting ; Fe2O3 ; iron oxide ; hematite ; Au nanoparticles ; surface plasmon ; hydrogen ; solar energy ; aerosol ; spray pyrolysis ; flame aerosol reactor ; Transition-Metal Oxides ; Sensitized Solar-Cells ; Semiconductor Electrodes ; Optical-Properties ; Small-Polaron ; Films ; Absorption ; Dependence ; Size ; Photoanodes
Record created on 2011-06-08, modified on 2016-08-09