Facile synthesis of Ternary Au@PdNi core-shell nanoparticles with enhanced electrocatalytic performance for ethanol oxidation reaction

Key Words:CATALYSTS; METHANOL; REDUCTION; PALLADIUM; ELECTROOXIDATION; NANOCRYSTALS; SURFACE; NANOWIRES; FACETS; GROWTH

Abstract:We report a facile synthesis of ternary Au@PdNi core-shell nanoparticles (C-SNPs). Au NPs with 15 nm in diameter served as seeds, Pd2+ and Ni2+ were co-reduced on the surface of Au NPs to obtain C-SNPs. These C-SNPs exhibited outstanding catalytic performance (5891 mA mg(Pd)(-1)) and stability for ethanol oxidation reaction (EOR). The activity was 9.48 times higher than the commercial Pd/C (20% wt). The catalytic mechanism was investigated, and the enhanced catalytic performance of Au@PdNi C-SNPs was mainly attributed to electronic effects between Pd and Au/Ni, and the unique core-shell nanostructure. The present work provides a strategy for rational design of ternary metallic core-shell nanocatalysts, which can achieve high catalytic activity and durability. (C) 2019 Elsevier B.V. All rights reserved.

Volume:817

Issue:wu

Translation or Not:no