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PtSn/C alloyed and non-alloyed materials: Differences in the ethanol electro-oxidation reaction pathways

Paper ID Volume ID Publish Year Pages File Format Full-Text
46583 46442 2011 7 PDF Available
Title
PtSn/C alloyed and non-alloyed materials: Differences in the ethanol electro-oxidation reaction pathways
Abstract

In the present work, the ethanol oxidation reaction (EOR) was investigated using PtSn/C electrocatalysts in the following two phases: 92% alloyed prepared by the polymeric precursor method (PPM) and 6% alloyed prepared by a sol–gel method (SGM). The TEM experiments show particle sizes of 3–5 nm for both catalysts. The electrocatalytic activity for both materials was investigated using chronoamperometry, and at 0.5 V vs. RHE, the current density for the EOR on the PPM material was approximately 5 times higher than on the SGM material. From in situ ATR-FTIR experiments, it can be seen that the non-alloyed materials led to CO2 formation with slow kinetics, whereas alloyed materials led to acetic acid formation with fast kinetics. The enhancement in the electrocatalytic behavior for ethanol oxidation was explained by acetic acid formation.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Ethanol oxidation on Pt3Sn1/C alloyed and non-alloyed assisted by FTIR “in situ”. ► The measured current density for ethanol oxidation on Pt3Sn/C alloyed is the highest. ► Non-alloyed PtSn/C led to CO2, while alloyed Pt3Sn/C led to acetic acid formation.

Keywords
PtSn; Ethanol oxidation reaction; Alloyed materials
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PtSn/C alloyed and non-alloyed materials: Differences in the ethanol electro-oxidation reaction pathways
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 110, 2 November 2011, Pages 141–147
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
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Any Questions? feel free to contact us