Porous platinum mesoflowers with enhanced activity for methanol oxidation reaction

Lina Zhuang; Wenjin Wang; Feng Hong; Shengchun Yang; Hongjun You; Jixiang Fang; Bingjun Ding

doi:10.1016/j.jssc.2012.03.043

Porous platinum mesoflowers with enhanced activity for methanol oxidation reaction

Lina Zhuang
, Wenjin Wang
, Feng Hong
, Shengchun Yang
, Hongjun You
, Jixiang Fang
, Bingjun Ding

Xi'an Jiaotong University

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

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 Pt ₇₂Ag ₂₈ MFs electrochemically. Both Pt ₄₅Ag ₅₅, Pt ₇₂Ag ₂₈ 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.

Original language	English
Pages (from-to)	239-245
Number of pages	7
Journal	Journal of Solid State Chemistry
Volume	191
DOIs	https://doi.org/10.1016/j.jssc.2012.03.043
State	Published - Jul 2012

Keywords

Methanol oxidation reaction
Noble metal
Platinum mesoflower
Porous nanostructure

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10.1016/j.jssc.2012.03.043

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title = "Porous platinum mesoflowers with enhanced activity for methanol oxidation reaction",

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 Pt 72Ag 28 MFs electrochemically. Both Pt 45Ag 55, Pt 72Ag 28 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 = "Methanol oxidation reaction, Noble metal, Platinum mesoflower, Porous nanostructure",

author = "Lina Zhuang and Wenjin Wang and Feng Hong and Shengchun Yang and Hongjun You and Jixiang Fang and Bingjun Ding",

year = "2012",

month = jul,

doi = "10.1016/j.jssc.2012.03.043",

language = "英语",

volume = "191",

pages = "239--245",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Academic Press Inc.",

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TY - JOUR

T1 - Porous platinum mesoflowers with enhanced activity for methanol oxidation reaction

AU - Zhuang, Lina

AU - Wang, Wenjin

AU - Hong, Feng

AU - Yang, Shengchun

AU - You, Hongjun

AU - Fang, Jixiang

AU - Ding, Bingjun

PY - 2012/7

Y1 - 2012/7

N2 - 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 Pt 72Ag 28 MFs electrochemically. Both Pt 45Ag 55, Pt 72Ag 28 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.

AB - 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 Pt 72Ag 28 MFs electrochemically. Both Pt 45Ag 55, Pt 72Ag 28 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.

KW - Methanol oxidation reaction

KW - Noble metal

KW - Platinum mesoflower

KW - Porous nanostructure

UR - https://www.scopus.com/pages/publications/84862183969

U2 - 10.1016/j.jssc.2012.03.043

DO - 10.1016/j.jssc.2012.03.043

M3 - 文章

AN - SCOPUS:84862183969

SN - 0022-4596

VL - 191

SP - 239

EP - 245

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

ER -

Porous platinum mesoflowers with enhanced activity for methanol oxidation reaction

Abstract

Keywords

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