Abstract
were masked by epoxy resin and the exposed end was ground with sand paper and polished up to 1 μm with diamond paste. Electrochemical measurement was carried out in a traditional three-electrode cell in PARSTAT 2273 electrochemical workstation. The working electrode, assistant electrode and reference electrode were the alloy, Pt electrode and saturated KCl calomel electrode, respectively. The applied potential is relative to the saturated KCl calomel electrode potential (SCE). 0.9 M KOH aqueous solution was utilized to estimate the active surface area of electrochemical catalysts. Electrochemical oxidation of formaldehyde was carried out by cyclic voltammetry in the electrolyte containing 0.9 M KOH and 0.3 M HCHO with scanning rate of 20 mV/s. The surface morphology of nanoporous silver was characterized by Zeiss Supra 55 fieldemission gun scanning electron microscope (FESEM).
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