title: Electrocatalytic properties of Au@Pt nanoparticles: effects of Pt shell packing density and Au core size.
abstract: A detailed study of electrocatalytic properties of Au@Pt 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.
authors: Department of Chemistry, Georgetown University, 37th and O St, NW, Washington, DC 20057, USA.
authors: Bingchen
authors: B
authors: Du
authors: Oksana
authors: O
authors: Zaluzhna
authors: YuYe J
authors: YJ
authors: Tong