Random Alloyed versus Intermetallic Nanoparticles: A Comparison of Electrocatalytic Performance

As synthetic methods advance for metal nanoparticles, more rigorous studies of structure–function relationships can be made. Many electrocatalytic processes depend on the size, shape, and composition of the nanocatalysts. Here, the properties and electrocatalytic behavior of random alloyed and inter...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2018-10, Vol.30 (40), p.e1801563-n/a
Main Authors: Gamler, Jocelyn T. L., Ashberry, Hannah M., Skrabalak, Sara E., Koczkur, Kallum M.
Format: Article
Language:English
Subjects:
Alloy systems
Bimetals
Carbon dioxide
carbon dioxide electroreduction
Catalysis
Chemical synthesis
Composition
copper
Electrocatalysts
Formic acid
methanol electrooxidation
Nanoparticles
oxygen reduction reaction
Oxygen reduction reactions
platinum
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Summary:As synthetic methods advance for metal nanoparticles, more rigorous studies of structure–function relationships can be made. Many electrocatalytic processes depend on the size, shape, and composition of the nanocatalysts. Here, the properties and electrocatalytic behavior of random alloyed and intermetallic nanoparticles are compared. Beginning with an introduction of metallic nanoparticles for catalysis and the unique features of bimetallic compositions, the discussion transitions to case studies of nanoscale electrocatalysts where direct comparisons of alloy and intermetallic compositions are undertaken for methanol electrooxidation, formic acid electrooxidation, the oxygen reduction reaction, and the electroreduction of carbon dioxide (CO2). Design and synthesis strategies for random alloyed and intermetallic nanoparticles are discussed, with an emphasis on Pt–M and Cu–M compositions as model systems. The differences in catalytic performance between alloys and intermetallic nanoparticles are highlighted in order to provide an outlook for future electrocatalyst design. Random alloy and intermetallic nanoparticles are promising electrocatalysts for a variety of reactions. The catalytic performance for methanol electrooxidation, formic acid oxidation, the oxygen reduction reaction, and CO2 electroreduction is compared. Future synthetic electrocatalyst targets are discussed, along with a summary and outlook for the field.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201801563