Electrocatalytic properties of Aut nanoparticles: effects of Pt shell packing density and Au core size

Electrocatalytic properties of Aut nanoparticles: effects of Pt shell packing density and Au core size

A detailed study of electrocatalytic properties of Aut nanoparticles (NPs) as functions of Pt shell packing density and Au core size in terms of CO/methanol oxidation and oxygen reduction reactions is reported here. While most samples studied showed inferior catalytic activities to those of the comm...

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Veröffentlicht in:Physical chemistry chemical physics : PCCP 2011-01, Vol.13 (24), p.11568-11574
Hauptverfasser: Du, Bingchen, Zaluzhna, Oksana, Tong, YuYe J
Format: Artikel
Sprache:eng
Schlagworte:
Bonding
Gold
Methyl alcohol
Nanoparticles
Packing density
Platinum
Shells
Surface chemistry
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container_title Physical chemistry chemical physics : PCCP
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creator Du, Bingchen
Zaluzhna, Oksana
Tong, YuYe J
description A detailed study of electrocatalytic properties of Aut nanoparticles (NPs) as functions of Pt shell packing density and Au core size in terms of CO/methanol oxidation and oxygen reduction reactions is reported here. While most samples studied showed inferior catalytic activities to those of the commercial Pt black that fall reasonably well in a d-band-center up-shift (i.e., stronger surface bonding) regime, the steepest activity recovery trend as manifested by the smallest Au-core samples suggests a plausible transition to a d-band-center down-shift (i.e., weaker surface bonding) regime as the Au core becomes smaller.
doi_str_mv 10.1039/C1CP20761J
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source Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection
subjects Bonding
Gold
Methyl alcohol
Nanoparticles
Packing density
Platinum
Shells
Surface chemistry
title Electrocatalytic properties of Aut nanoparticles: effects of Pt shell packing density and Au core size
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