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Surfactant‐Free Synthesis of Graphene‐Supported PdCu Nanocrystals with High Alloying Degree as Highly Active Catalyst for Formic Acid Electrooxidation
Author(s) -
Li Shuni,
Zhai Yanan,
Zhang Xinyi,
MacFarlane Douglas R.
Publication year - 2017
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201700227
Subject(s) - materials science , graphene , catalysis , coprecipitation , oxide , chronoamperometry , nanocrystalline material , electrocatalyst , nanocrystal , cyclic voltammetry , inorganic chemistry , chemical engineering , electrochemistry , nanotechnology , metallurgy , chemistry , organic chemistry , electrode , engineering
In recent years, graphene/metal nanocrystal hybrids have attracted tremendous attention in catalysis and electrocatalysis. This work demonstrates a surfactant‐free coprecipitation/coreduction method to synthesize graphene‐supported nanocrystalline PdCu (PdCu/GN) hybrids with high alloying degree. The strong interaction between graphene oxide and metal hydrates results in uniform precipitation on the graphene oxide surface, which plays a critical role in excellent dispersion and high alloying degree of PdCu nanocrystals. Cyclic voltammetry and chronoamperometry measurements show that nanocrystalline PdCu/GN hybrids have higher activity and durability than commercial Pd/C catalyst for the formic acid oxidation reaction.