Electrocatalytic Oxygen Evolution at Surface-Oxidized Multiwall Carbon Nanotubes.
Large-scale storage of renewable energy in the form of hydrogen (H) fuel via electrolytic water splitting requires the development of water oxidation catalysts that are efficient and abundant. Carbon-based nanomaterials such as carbon nanotubes have attracted significant applications for use as subs...
| Publicado en: | Journal of the American Chemical Society Vol. 137; no. 8; pp. 2901 - 2908 |
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| Autores principales: | , , , |
| Formato: | Artículo |
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American Chemical Society
3/4/2015
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=101695798&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 101695798 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 00027863 ACS jtl: Journal of the American Chemical Society issn: 00027863 maglogo: N pubinfo: dt: 3/4/2015 vid: 137 iid: 8 pid: 997 pub: American Chemical Society artinfo: ui: 101695798 10.1021/ja509879r ppf: 2901 ppct: 7 formats: tig: atl: Electrocatalytic Oxygen Evolution at Surface-Oxidized Multiwall Carbon Nanotubes. aug: au: Xunyu Lu Wai-Leung Yim Suryanto, Bryan H. R. Chuan Zhao affil: School of Chemistry, The University of New South Wales, Sydney, New South Wales 2052, Australia Institute of High Performance Computing, Agency for Science, Technology, and Research, 1 Fusionopolis Way, No. 16-16 Connexis, Singapore 138632 su: Carbon nanotubes Hydrogen Nanostructured materials Electronic structure Electron research sug: subj: Carbon nanotubes Hydrogen Nanostructured materials Electronic structure Electron research ab: Large-scale storage of renewable energy in the form of hydrogen (H) fuel via electrolytic water splitting requires the development of water oxidation catalysts that are efficient and abundant. Carbon-based nanomaterials such as carbon nanotubes have attracted significant applications for use as substrates for anchoring metal-based nanoparticles. We show that, upon mild surface oxidation, hydrothermal annealing and electrochemical activation, multiwall carbon nanotubes (MWCNTs) themselves are effective water oxidation catalysts, which can initiate the oxygen evolution reaction (OER) at overpotentials of 0.3 V in alkaline media. Oxygen-containing functional groups such as ketonic C=O generated on the outer wall of MWCNTs are found to play crucial roles in catalyzing OER by altering the electronic structures of the adjacent carbon atoms and facilitates the adsorption of OER intermediates. The well-preserved microscopic structures and highly conductive inner walls of MWCNTs enable efficient transport of the electrons generated during OER pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2015 holdings: @attributes: islocal: N |
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