Bimetallic Pd−Au nanostructures were synthesized in the soft templates provided by surfactant hexagonal mesophases. The nanostructures are constituted by a core rich in gold and a Pd porous shell. The electrocatalytic activity of these nanostructures for ethanol oxidation in basic medium was compared with that of alloyed Pd−Au nanoparticles synthesized in solution. The Pd−Au alloy is active toward the oxidation of ethanol in an alkaline medium but is not durable in realizing this process. The Pd shell −Au core nanostructures synthesized in mesophases are promising for application in direct ethanol fuel cells as they exhibit a very good electrocatalytic activity and a high stability.
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Ksar et al. (2009) studied this question.
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