One-Pot Synthesis of Monodisperse 5 nm Pd-Ni Nanoalloys for Electrocatalytic Ethanol Oxidation

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Highly monodisperse 5 nm Pd-Ni alloy. nanoparticles (NPs) were prepared by the reduction of Pd(acac)(2)/Ni(acac)(2) mixtures with tert-butylamine-borane complex (TBAB) in the presence of oleic acid (OA) and oleylamine (OAm). Employing TBAB as an effective reductant and OA/OAm combination as an effective stabilizing agent is crucial to the formation of monodisperse Pd-Ni NPs. Experimental results collectively verify that the Pd-Ni alloy NPs form through the sequential nucleation-interdiffusion process and the simultaneous reduction of both metal precursors by the one-pot protocol is the key to the formation of homogeneous NPs. The Pd-Ni NPs were well-dispersed on carbon supports and chemically dealloyed after acetic acid washing through the selective dissolution of the less noble Ni component. The Pd-Ni NP catalysts exhibited much higher electrocatalytic activity and stability for ethanol oxidation than those of a commercial Pd/C catalyst.
Publisher
AMER CHEMICAL SOC
Issue Date
2012-08
Language
English
Article Type
Article
Keywords

FORMIC-ACID OXIDATION; OXYGEN REDUCTION; FUEL-CELLS; NANOPARTICLES; NANOCRYSTALS; ELECTROOXIDATION; CATALYST

Citation

ACS APPLIED MATERIALS & INTERFACES, v.4, no.8, pp.4208 - 4214

ISSN
1944-8244
DOI
10.1021/am300923s
URI
http://hdl.handle.net/10203/103070
Appears in Collection
CH-Journal Papers(저널논문)
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