Title of article
Porous platinum mesoflowers with enhanced activity for methanol oxidation reaction
Author/Authors
Lina Zhuang، نويسنده , , Wenjin Wang، نويسنده , , Feng Hong، نويسنده , , Shengchun Yang، نويسنده , , Hongjun You، نويسنده , , Jixiang Fang، نويسنده , , Bingjun Ding، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2012
Pages
7
From page
239
To page
245
Abstract
Porous Pt and Pt–Ag alloy mesoflowers (MFs) with about 2 μm in diameter and high porosity were synthesized using Ag mesoflowers as sacrificial template by galvanic reaction. The silver content in Pt–Ag alloys can be facilely controlled by nitric acid treatment. And the pure Pt MFs can be obtained by selective removal of silver element from Pt72Ag28 MFs electrochemically. Both Pt45Ag55, Pt72Ag28 and pure Pt show a high catalytic performance in methanol oxidation reaction (MOR). Especially, pure Pt MFs exhibited a 2 to 3 times current density enhancement in MOR compared with the commercial used Pt black, which can be attributed to their porous nanostructure with 3-dimentional nature and small crystal sizes.
Keywords
Noble metal , Platinum mesoflower , Methanol oxidation reaction , Porous nanostructure
Journal title
JOURNAL OF SOLID STATE CHEMISTRY
Serial Year
2012
Journal title
JOURNAL OF SOLID STATE CHEMISTRY
Record number
1340599
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