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Pt–Rh alloy nanodendrites for improved electrocatalytic activity and stability in methanol electrooxidation reaction

Paper ID Volume ID Publish Year Pages File Format Full-Text
49491 46750 2014 5 PDF Available
Title
Pt–Rh alloy nanodendrites for improved electrocatalytic activity and stability in methanol electrooxidation reaction
Abstract

•The Pt–Rh alloy nanodendrites were synthesized by a polyol method at low-temperature.•The Pt–Rh alloy nanoparticles exhibited a dendritic structure with high-index facets.•The Pt–Rh alloy nanodendrites showed improved electrocatalytic activity and stability.

Structure-controlled metallic catalysts have been well known to exhibit an improved electrocatalytic activity due to modulated surface structures favorable for electrochemical reactions. We have synthesized Pt–Rh nanodendritic catalyst for methanol electrooxidation by a polyol method in the presence of PVP and l-ascorbic acid in aqueous solution. The as-synthesized Pt–Rh alloy nanoparticles exhibited a dendritic structure with well-defined alloy formation between the Pt and Rh metallic phase, uniform particle size and shape, and high-index facets. Furthermore, we found remarkably improved electrochemical properties of the Pt–Rh alloy nanodendrites i.e. improved electrocatalytic activity and stability for methanol electrooxidation in comparison with spherical Pt–Rh and pure Pt nanoparticles.

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Keywords
Platinum; Rhodium; Dendrite; Catalyst; Methanol electrooxidation
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Pt–Rh alloy nanodendrites for improved electrocatalytic activity and stability in methanol electrooxidation reaction
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 55, 5 October 2014, Pages 24–28
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
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Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us