Aligned nanoporous Pt-Cu bimetallic microwires with high catalytic activity toward methanol electrooxidation

H. J. Qiu, X. Shen, J. Q. Wang, Akihiko Hirata, T. Fujita, Y. Wang, M. W. Chen

Research output: Contribution to journalArticle

65 Citations (Scopus)

Abstract

We report a simple approach to fabricate aligned bimetallic Pt-Cu microwires with a three-dimensional nanoporous structure, tunable composition, and high catalytic activity by dealloying a dilute Pt3Cu97 precursor. Each microwire possesses inherent ultrafine nanoporous structure with uniformly distributed Pt-Cu alloy ligaments and nanopores with a dimension of ∼2 nm. Electrochemical measurements manifest that the nanoporous Pt-Cu microwires have significantly enhanced electrocatalytic activities compared with a commercial Pt/C nanoparticulate catalyst. With evident advantages of facile preparation and enhanced catalytic performance together with low material costs, the nanoporous Pt-Cu microwires hold great promise as a high-performance catalyst for electrochemical energy conversion.

Original languageEnglish
Pages (from-to)3779-3785
Number of pages7
JournalACS Catalysis
Volume5
Issue number6
DOIs
Publication statusPublished - 2015 Jun 5
Externally publishedYes

Fingerprint

Electrooxidation
Methanol
Catalyst activity
Catalysts
Nanopores
Ligaments
Energy conversion
Chemical analysis
Costs
Ultrafine

Keywords

  • bimetallic Pt catalysts
  • core/shell structure
  • dealloying
  • electrocatalysts
  • fuel cells
  • methanol oxidation
  • nanoporous metals

ASJC Scopus subject areas

  • Catalysis

Cite this

Aligned nanoporous Pt-Cu bimetallic microwires with high catalytic activity toward methanol electrooxidation. / Qiu, H. J.; Shen, X.; Wang, J. Q.; Hirata, Akihiko; Fujita, T.; Wang, Y.; Chen, M. W.

In: ACS Catalysis, Vol. 5, No. 6, 05.06.2015, p. 3779-3785.

Research output: Contribution to journalArticle

Qiu, H. J. ; Shen, X. ; Wang, J. Q. ; Hirata, Akihiko ; Fujita, T. ; Wang, Y. ; Chen, M. W. / Aligned nanoporous Pt-Cu bimetallic microwires with high catalytic activity toward methanol electrooxidation. In: ACS Catalysis. 2015 ; Vol. 5, No. 6. pp. 3779-3785.
@article{ddae885c1fba493ab825b3a4a62d9b03,
title = "Aligned nanoporous Pt-Cu bimetallic microwires with high catalytic activity toward methanol electrooxidation",
abstract = "We report a simple approach to fabricate aligned bimetallic Pt-Cu microwires with a three-dimensional nanoporous structure, tunable composition, and high catalytic activity by dealloying a dilute Pt3Cu97 precursor. Each microwire possesses inherent ultrafine nanoporous structure with uniformly distributed Pt-Cu alloy ligaments and nanopores with a dimension of ∼2 nm. Electrochemical measurements manifest that the nanoporous Pt-Cu microwires have significantly enhanced electrocatalytic activities compared with a commercial Pt/C nanoparticulate catalyst. With evident advantages of facile preparation and enhanced catalytic performance together with low material costs, the nanoporous Pt-Cu microwires hold great promise as a high-performance catalyst for electrochemical energy conversion.",
keywords = "bimetallic Pt catalysts, core/shell structure, dealloying, electrocatalysts, fuel cells, methanol oxidation, nanoporous metals",
author = "Qiu, {H. J.} and X. Shen and Wang, {J. Q.} and Akihiko Hirata and T. Fujita and Y. Wang and Chen, {M. W.}",
year = "2015",
month = "6",
day = "5",
doi = "10.1021/acscatal.5b00073",
language = "English",
volume = "5",
pages = "3779--3785",
journal = "ACS Catalysis",
issn = "2155-5435",
publisher = "American Chemical Society",
number = "6",

}

TY - JOUR

T1 - Aligned nanoporous Pt-Cu bimetallic microwires with high catalytic activity toward methanol electrooxidation

AU - Qiu, H. J.

AU - Shen, X.

AU - Wang, J. Q.

AU - Hirata, Akihiko

AU - Fujita, T.

AU - Wang, Y.

AU - Chen, M. W.

PY - 2015/6/5

Y1 - 2015/6/5

N2 - We report a simple approach to fabricate aligned bimetallic Pt-Cu microwires with a three-dimensional nanoporous structure, tunable composition, and high catalytic activity by dealloying a dilute Pt3Cu97 precursor. Each microwire possesses inherent ultrafine nanoporous structure with uniformly distributed Pt-Cu alloy ligaments and nanopores with a dimension of ∼2 nm. Electrochemical measurements manifest that the nanoporous Pt-Cu microwires have significantly enhanced electrocatalytic activities compared with a commercial Pt/C nanoparticulate catalyst. With evident advantages of facile preparation and enhanced catalytic performance together with low material costs, the nanoporous Pt-Cu microwires hold great promise as a high-performance catalyst for electrochemical energy conversion.

AB - We report a simple approach to fabricate aligned bimetallic Pt-Cu microwires with a three-dimensional nanoporous structure, tunable composition, and high catalytic activity by dealloying a dilute Pt3Cu97 precursor. Each microwire possesses inherent ultrafine nanoporous structure with uniformly distributed Pt-Cu alloy ligaments and nanopores with a dimension of ∼2 nm. Electrochemical measurements manifest that the nanoporous Pt-Cu microwires have significantly enhanced electrocatalytic activities compared with a commercial Pt/C nanoparticulate catalyst. With evident advantages of facile preparation and enhanced catalytic performance together with low material costs, the nanoporous Pt-Cu microwires hold great promise as a high-performance catalyst for electrochemical energy conversion.

KW - bimetallic Pt catalysts

KW - core/shell structure

KW - dealloying

KW - electrocatalysts

KW - fuel cells

KW - methanol oxidation

KW - nanoporous metals

UR - http://www.scopus.com/inward/record.url?scp=84930958416&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84930958416&partnerID=8YFLogxK

U2 - 10.1021/acscatal.5b00073

DO - 10.1021/acscatal.5b00073

M3 - Article

VL - 5

SP - 3779

EP - 3785

JO - ACS Catalysis

JF - ACS Catalysis

SN - 2155-5435

IS - 6

ER -