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Electrocatalysis of Pd–Co supported on carbon black or ball-milled carbon nanotubes towards methanol oxidation in alkaline media

Paper ID Volume ID Publish Year Pages File Format Full-Text
47231 46464 2010 6 PDF Available
Title
Electrocatalysis of Pd–Co supported on carbon black or ball-milled carbon nanotubes towards methanol oxidation in alkaline media
Abstract

Pd/C and Pd–Co/C catalysts were synthesized through a simple simultaneous reduction reaction with sodium borohydride in aqueous solution, and the electrocatalytic performance for methanol oxidation in alkaline solutions was investigated. The structure and morphology of these catalysts were characterized by X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX) and transmission electron microscopy (TEM). The cyclic voltammetry (CV) and CO stripping results show that Pd–Co(8:1)/C has better electrocatalytic activity and higher resistance to CO poisoning over Pd/C, which can be explained by a bifunctional mechanism. Based on the good electrocatalytic performance of Pd–Co(8:1)/C, the ball-milled CNTs-supported Pd–Co(8:1) catalyst was synthesized, demonstrating even better catalytic activity. The high specific surface area of ball-milled CNTs with plenty of mesopores and defects may contribute to the high Pd–Co utilization and consequently to the better electrocatalytic activity.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch highlights▶ A Pd-Co(8:1)/C catalyst shows better catalytic activity for methanol electrooxidation. ▶ The good results were explained by a bifunctional mechanism. ▶ The ball-milled CNTs-supported Pd-Co(8:1) catalyst was synthesized. ▶ The Pd-Co(8:1)/bCNTs catalyst demonstrated even better catalytic activity.

Keywords
Pd–Co/C; Methanol oxidation; Fuel cell; Electrocatalysts; Carbon nanotubes
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Electrocatalysis of Pd–Co supported on carbon black or ball-milled carbon nanotubes towards methanol oxidation in alkaline media
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 99, Issues 1–2, 31 August 2010, Pages 229–234
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