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Observation of surface structural changes of Pt octahedron nanoparticles and its effect in electrocatalysis oxidation of methanol

Paper ID Volume ID Publish Year Pages File Format Full-Text
51344 46839 2009 4 PDF Available
Title
Observation of surface structural changes of Pt octahedron nanoparticles and its effect in electrocatalysis oxidation of methanol
Abstract

The Pt octahedron nanoparticles closed by 8 {1 1 1} facets are synthesized as catalyst for methanol oxidation. The catalytic activity of the Pt octahedron nanoparticles is enhanced significantly after applying a number of potential cycles. Such enhancement is due to the formation of the defect and step sites introduced by the potential cycles, which is directly confirmed by transmission electron micrograph. Accumulation of the defect and step sites result in a formation of Pt(1 0 0) terraces, arising from more potential cycles. The poisoning of Pt(1 0 0) terraces leads to a rapid decay in the long-term performance.

Keywords
Methanol oxidation; Pt octahedron nanoparticles; Surface structural changes
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Observation of surface structural changes of Pt octahedron nanoparticles and its effect in electrocatalysis oxidation of methanol
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 10, Issue 8, 30 March 2009, Pages 1244–1247
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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