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Gold-decorated platinum nanoparticles in polyelectrolyte multilayers with enhanced catalytic activity for methanol oxidation

Paper ID Volume ID Publish Year Pages File Format Full-Text
39092 45806 2016 6 PDF Available
Title
Gold-decorated platinum nanoparticles in polyelectrolyte multilayers with enhanced catalytic activity for methanol oxidation
Abstract

•A new catalyst was developed for methanol oxidation.•Au-decorated-Pt nanoparticles were synthesized in situ in polymer film support.•The nanoparticles exhibited better electrocatalytic properties than monometallic Pt.

In the development of commercial direct methanol fuel cells, search for alternative electrocatalysts for Pt with superior catalytic activity and long-term operation stability remains a major challenge. This paper reports the synthesis of Au-decorated-Pt (Pt^Au) nanoparticles in polyelectrolyte multilayers (PEMUs) via ion-exchange/in situ reduction cycles in conjunction with a seed-mediated growth process. The structure of the Pt^Au nanoparticles in the PEMU was characterized by UV–vis absorption spectroscopy, transmission electron microscopy and selected-area electron diffraction. The electrocatalytic performance of the nanoparticles for methanol oxidation reaction was investigated by cyclic voltammetry, and the results show that the Pt^Au nanoparticles exhibited better electrocatalytic efficiency, tolerance to poisoning and long-term stability compared with monometallic Pt, showing synergistic effects between the bimetallic components. The PEMU-supported Pt^Au nanoparticles may find application as an anode catalyst in direct methanol fuel cells.

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Keywords
Nanoparticle; Polyelectrolyte multilayer; Catalyst; Methanol oxidation; Fuel cell
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Gold-decorated platinum nanoparticles in polyelectrolyte multilayers with enhanced catalytic activity for methanol oxidation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 517, 5 May 2016, Pages 67–72
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
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us