Ultrathin one-dimensional platinum-cobalt nanowires as efficient catalysts for the glycerol oxidation reaction.
J Colloid Interface Sci
; 556: 441-448, 2019 Nov 15.
Article
em En
| MEDLINE
| ID: mdl-31472318
ABSTRACT
Direct fuel cells are regarded as the most portable device for alleviating the problems of the energy dilemma and environmental disruption. Although direct fuel cells have a number of advantages, the lack of highly-efficient anode catalysts inhibits their wide application. To address this challenge, we report a facile one-pot method to fabricate a series of ultrathin platinum-cobalt (Pt-Co) nanowires with different proportions. The as-prepared catalysts all have one-dimensional ultrathin nanowire structures with high yields. Among all these catalysts, the ultrathin Pt89Co11 nanowires with optimized compositions, whose diameters are 1.8â¯nm on average, show the best catalytic activity for the glycerol oxidation reaction in alkaline conditions, and their mass and specific activities reach 4573.0â¯mAâ¯mg-1 and 11.9â¯mAâ¯cm-2, which are 5.4 and 3.6 times higher than those of commercial Pt/C catalysts, respectively. The as-obtained Pt89Co11 nanowires are also the most durable nanowires according to long-term stability tests. This method may provide guidelines for the preparation of other Pt-based bimetallic nanowires, which could somewhat accelerate the development and commercialization of catalysts for fuel cells.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
J Colloid Interface Sci
Ano de publicação:
2019
Tipo de documento:
Article
País de publicação:
EEUU
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ESTADOS UNIDOS
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ESTADOS UNIDOS DA AMERICA
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EUA
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UNITED STATES
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UNITED STATES OF AMERICA
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US
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USA