Tuning Surface Structure of Pd₃Pb/Pt _n Pb Nanocrystals for Boosting the Methanol Oxidation Reaction.

ABSTRACT: Developing an efficient Pt-based electrocatalyst with well-defined structures for the methanol oxidation reaction (MOR) is critical, however, still remains a challenge. Here, a one-pot approach is reported for the synthesis of Pd₃Pb/Pt _n Pb nanocubes with tunable Pt composition varying from 3.50 to 2.37 and 2.07, serving as electrocatalysts toward MOR. Their MOR activities increase in a sequence of Pd₃Pb/Pt_3.50Pb << Pd₃Pb/Pt_2.07Pb < Pd₃Pb/Pt_2.37Pb, which are substantially higher than that of commercial Pt/C. Specifically, Pd₃Pb/Pt_2.37Pb electrocatalysts achieve the highest specific (13.68 mA cm^-2) and mass (8.40 A mg_Pt ^-1) activities, which a

SUBMITTER: Wu X 

PROVIDER: S-EPMC6918111 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature