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Nanoscale electrocatalysis : visualizing oxygen reduction at pristine, kinked, and oxidized sites on individual carbon nanotubes

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Byers, Joshua C., Güell, Aleix G. and Unwin, Patrick R. (2014) Nanoscale electrocatalysis : visualizing oxygen reduction at pristine, kinked, and oxidized sites on individual carbon nanotubes. Journal of the American Chemical Society, Volume 136 (Number 32). pp. 11252-11255. doi:10.1021/ja505708y

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Official URL: http://dx.doi.org/10.1021/ja505708y

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Abstract

There is a prevailing and widely adopted view that carbon nanotubes, which are finding considerable application in energy, healthcare, and electronics applications, are highly (electro)catalytically inert unless modified, doped, or defected. By visualizing the electrochemical reduction of oxygen (hydrogen peroxide generation) at high resolution along pristine (defect-free) regions of individual single-walled carbon nanotubes, we show that there is, in fact, significant activity comparable to that of standard gold electrocatalysts. Moreover, the activity is greatly enhanced at strained (kinked) sites and regions modified by oxidation. Single-walled carbon nanotubes are thus effective electrocatalysts in their own right and not just supports for other materials.

Item Type: Journal Article
Divisions: Faculty of Science, Engineering and Medicine > Science > Chemistry
Journal or Publication Title: Journal of the American Chemical Society
Publisher: American Chemical Society
ISSN: 0002-7863
Official Date: 25 July 2014
Dates:
DateEvent
25 July 2014Available
6 June 2014Submitted
Volume: Volume 136
Number: Number 32
Page Range: pp. 11252-11255
DOI: 10.1021/ja505708y
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access
Funder: European Research Council (ERC)
Grant number: ERC-2009-AdG247143-QUANTIF

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