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Facile Fabrication of Porous Pd‐Au Bimetallic Nanostructures for Electrocatalysis
Author(s) -
Wang Hui,
Ge Xingbo
Publication year - 2012
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201100639
Subject(s) - bimetallic strip , x ray photoelectron spectroscopy , nanoporous , materials science , chemical engineering , electrocatalyst , nanostructure , transmission electron microscopy , scanning electron microscope , high resolution transmission electron microscopy , nanotechnology , fabrication , porosity , electrochemistry , chemistry , metal , electrode , metallurgy , composite material , medicine , alternative medicine , pathology , engineering
Fabrication of Pd‐Au bimetallic nanostructures is of special significance due to their unique physicochemical properties and broad industrial applications. Here we report a simple route to create a class of Pd‐Au bimetallic nanostructures via chemical plating an ultrathin Pd layer onto nanoporous gold (NPG). The structures and surface properties of the obtained products were studied by scanning electron microscopy (SEM), energy‐dispersive X‐ray spectroscopy (EDS), high‐resolution transmission electron microscopy (HR‐TEM), UV‐vis spectroscopy, X‐ray photoelectron spectroscopy (XPS), and electrochemical techniques. Pd was found to grow epitaxially over the NPG surface, forming core‐shell‐type porous nanocomposites. These materials possess some interesting electrochemical behaviors and are highly active toward formic acid electrooxidation.