Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    Significance of wall number on the carbon nanotube support-promoted electrocatalytic activity of Pt NPs towards methanol/formic acid oxidation reactions in direct alcohol fuel cells

    Access Status
    Fulltext not available
    Authors
    Yuan, W.
    Cheng, Y.
    Shen, P.
    Li, C.
    Jiang, San Ping
    Date
    2015
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Yuan, W. and Cheng, Y. and Shen, P. and Li, C. and Jiang, S.P. 2015. Significance of wall number on the carbon nanotube support-promoted electrocatalytic activity of Pt NPs towards methanol/formic acid oxidation reactions in direct alcohol fuel cells. Journal of Materials Chemistry A. 3 (5): pp. 1961-1971.
    Source Title
    Journal of Materials Chemistry A
    DOI
    10.1039/c4ta04613g
    ISSN
    2050-7488
    School
    Fuels and Energy Technology Institute
    URI
    http://hdl.handle.net/20.500.11937/37013
    Collection
    • Curtin Research Publications
    Abstract

    For the first time it has been demonstrated that number of walls in pristine carbon nanotube (CNT) supports has significant effects on the electrocatalytic activity of Pt nanoparticles (NPs) towards methanol and formic acid oxidation reactions in alkaline solution, showing a distinctive volcano-type dependence of the catalytic performance on the number of walls of CNTs. In this study, Pt NPs of a similar size were uniformly self-assembled on CNTs with different numbers of walls and outer diameters to be used as model catalysts. The electrocatalytic activity and stability of Pt NPs showed distinctive volcano-type curves as a function of the number of walls with the best results being obtained using CNTs with an average of 7 walls. Such an unusual promotion effect can be ascribed predominantly to the high affinity of oxygen-containing species such as OHads, which facilitate the removal of adsorbed CO species and promote fast electron transfer between the outer walls and the inner tubes of CNTs, most likely through electron tunneling under the electrochemical polarization driving force. This study demonstrates the new possibility of tailoring the electrocatalytic properties of precious metal catalysts via altering the electronic and quantum transport properties of their CNT supports.

    Related items

    Showing items related by title, author, creator and subject.

    • Pristine carbon nanotubes as non-metal electrocatalysts for oxygenevolution reaction of water splitting
      Cheng, Yi; Xu, C.; Jia, Lichao; Gale, Julian; Zhang, L.; Liu, C.; shen, P.; Jiang, San Ping (2015)
      Oxygen evolution reaction (OER) is one of the most important reactions in electrochemical energy storage and conversion systems. Thus, the development of efficient electrocatalysts with high activity and durability is of ...
    • Effect of Carbon Nanotubes on Direct Electron Transfer and Electrocatalytic Activity of Immobilized Glucose Oxidase
      Liu, Yuxiang; Zhang, Jin; Cheng, Yi; Jiang, San Ping (2018)
      © 2018 American Chemical Society. Carbon nanotubes (CNTs) are excellent supports for electrocatalysts because of their large surface area, excellent electronic conductivity, and high chemical and structural stability. In ...
    • Carbon-Nanotubes-Supported Pd Nanoparticles for Alcohol Oxidations in Fuel Cells: Effect of Number of Nanotube Walls on Activity
      Zhang, J.; Lu, S.; Xiang, Y.; Shen, P.; Liu, J.; Jiang, San Ping (2015)
      Carbon nanotubes (CNTs) are well known electrocatalyst supports due to their high electrical conductivity, structural stability, and high surface area. Here, we demonstrate that the number of inner tubes or walls of CNTs ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.