Abstract
We report on the synthesis of novel three-dimensional nanoporous Pt–Ru bimetallicnetworks by decorating nanoporous Pt networks with Ru using a hydrothermally assistedprecipitating process. Scanning electron microscopy (SEM) and energy dispersive x-rayspectroscopy (EDS) were used to characterize the morphology and the composition ofthe nanoporous Pt–Ru networks formed. X-ray diffraction analysis confirmedthat, after protected annealing treatment, Pt–Ru bimetallic material was formed.The electrocatalytic activity of the synthesized nanoporous Pt–Ru networks wascharacterized using electrochemical oxidation of methanol as a probe. The electrocatalyticactivity of the nanoporous Pt networks significantly increases with the increments ofdecorated Ru and reaches the highest value with 41% of Ru. The peak current ofmethanol oxidation on the nanoporous Pt–Ru(41%) bimetallic networks is over180% higher than that on the nanoporous Pt networks without Ru decoration.This is very desirable for fuel cell development and electrochemical sensor design.
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