Composition-dependent electrocatalytic activity of AuPd alloy nanoparticles prepared via simultaneous sputter deposition into an ionic liquid.
作者： Masanori Hirano , Kazuki Enokida , Ken-ichi Okazaki , Susumu Kuwabata , Hisao Yoshida
DOI: 10.1039/C3CP50816A
关键词:
摘要: Homogeneously alloyed bimetallic particles of AuPd with an average size ca. 2 nm were successfully prepared by simultaneous sputter deposition Au and Pd in ionic liquid the absence any additional stabilizing agents. The chemical composition alloy was tunable depending on area fraction plates Au–Pd binary targets for sputtering. immobilized HOPG surface heat treatment along increase from to 7 nm. Ionic species adsorbed as-prepared nanoparticle films caused prevention electrocatalytic reactions, but repetition potential sweep cycling a basic aqueous solution removed species, resulting oxidation ethanol at nanoparticle-immobilized electrode. activity nanoalloy varied upon changing particles, having 0.61 exhibited maximum against oxidation, being higher than pure Pt surface.
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