fulltext.study @t Gmail

Particle size effect in carbon supported Pt–Co alloy electrocatalysts prepared by the borohydride method: XRD characterization

Paper ID Volume ID Publish Year Pages File Format Full-Text
42408 45924 2009 4 PDF Available
Title
Particle size effect in carbon supported Pt–Co alloy electrocatalysts prepared by the borohydride method: XRD characterization
Abstract

Pt3Co/C electrocatalysts prepared by wet synthesis method from water–ethylene glycol solutions of Pt and Co precursors were investigated by X-ray diffraction in conjunction with electrochemical measurements. It was shown that varying the binary solvent composition is an effective means of control over the average nanoparticle size and the grain size distribution. It was found that unit cell parameter of the Pt3Co/C electrocatalysts decreases nonlinearly with decreasing particle size. The activity of the prepared Pt3Co/C catalysts for the oxygen reduction reaction (ORR) in H2SO4 solution enhances with decrease in the particle size, the unit cell parameter, and the dispersion of the grain size distribution. All samples studied show higher catalytic activities in comparison with the commercial Pt/C materials.

Graphical abstractWe report on combined X-ray diffraction and electrochemical investigation of Pt3Co/C electrocatalysts prepared by wet synthesis method from water–ethylene glycol solutions. X-ray diffraction analysis showed that variation of the binary solvent composition is an effective way to control microstructural characteristics of the catalysts nanoparticles. Nonlinear change in the variation of the unit cell parameter with decreasing particle size has been found.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Pt–Co alloy; Size effects; Grain size distribution; Oxygen reduction; X-ray diffraction
First Page Preview
Particle size effect in carbon supported Pt–Co alloy electrocatalysts prepared by the borohydride method: XRD characterization
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
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 357, Issue 1, 31 March 2009, Pages 1–4
Authors
, , , , ,
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