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Noble-Metal Nanocrystals with Controlled Facets for Electrocatalysis
Jong Wook Hong1,2, Yena Kim1, Yongmin Kwon1
1Center for Nanotectonics, Department of Chemistry and KI for the NanoCentury, KAIST, Daejeon, 34141, Korea.
Chemistry, an Asian Journal
|June 4, 2016
Summary
Noble-metal nanocrystals (NCs) offer superior electrocatalysis. Controlling NC facets through synthesis strategies enhances their catalytic activity for fuel cell reactions like oxygen reduction and fuel oxidation.
Area of Science:
- Materials Science
- Nanotechnology
- Electrochemistry
Background:
- Noble-metal nanocrystals (NCs) are crucial electrocatalysts.
- NC shape and facet properties significantly impact catalytic performance.
- Understanding NC growth mechanisms is key to controlling facet composition.
Purpose of the Study:
- To review synthesis strategies for noble-metal NCs with controlled facets.
- To discuss the facet-dependent electrocatalytic properties of these NCs.
- To highlight applications in fuel cell reactions.
Main Methods:
- Classification of synthesis strategies based on NC facet types.
- Review of recent advancements in mono- and bimetallic NC preparation.
- Analysis of electrocatalytic performance for specific reactions.
Main Results:
- Developed synthesis strategies enable control over NC facets and composition.
- Facet engineering significantly enhances electrocatalytic activity.
- Demonstrated improved performance for oxygen reduction and fuel oxidation reactions.
Conclusions:
- Controlled facet synthesis is vital for designing efficient noble-metal electrocatalysts.
- Understanding facet-dependent mechanisms aids in rational catalyst design.
- These NCs show promise for advanced fuel cell technologies.
