Abstract
Uniformly dispersed Ag nanoparticles were successfully obtained on reduced graphene oxide (RGO) through the simultaneous reduction of Ag and graphene oxide (GO) without surfactant by controlling growth of Ag nanoparticles at low temperatures. Using this method, even a high metal loading of 60wt.% Ag with a mean diameter of less than 10nm could be achieved over the RGO sheets. The oxygen reduction reaction activity was investigated using an RGO-supported Ag catalyst (Ag/RGO) in a 0.1M NaOH solution, and the kinetic parameters were determined using the rotating disk electrode (RDE) technique. For comparison, a commercial carbon-supported Ag catalyst (Ag/C) was investigated under identical experimental conditions.
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