EPR characterisation of platinum nanoparticle functionalised CNT hybrid materials

Lynn Dennany, Peter Sherrell, Jun Chen, Peter C. Innis, Gordon G. Wallace, Andrew I. Minett, Intelligent Polymer Research Institute and ARC Centre of Excellence for Electromaterials Science, University of Wollongong, Australia

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

The use of nanostructured carbon materials as electrodes for energy storage and conversion is an expanding area of research in recent years. Herein, Platinum nanoparticles have been deposited onto both multi-walled and single-walled carbon nanotubes via a microwave assisted polyol reduction method. This interaction has been probed with electron paramagnetic resonance (EPR) and Raman spectroscopies to elucidate the charge/electron transfer interactions between the Pt nanoparticles and the CNTs. Observed shifts in the g factors of the CNTs are indicative of such an electronic interactions, suggesting covalent attachment of the nanoparticles with the carboxylic groups on the CNTs, formed during the microwave-assisted reduction process. The Pt decorated CNTs show a dramatic increase in electrochemical behaviour in terms of high reversible capacity and relatively stable cycle performance compared to unmodified CNTs increasing their applicability in energy storage devices. For instance, significant increases in the electrochemical double layer capacitance is observed for the CNT-NP composite electrode (80 % for SWNTs and 50 % for MWNT).
LanguageEnglish
Pages4135-4141
Number of pages6
JournalPhysical Chemistry Chemical Physics
Volume12
DOIs
Publication statusPublished - 2010

Fingerprint

Hybrid materials
Platinum
Paramagnetic resonance
electron paramagnetic resonance
platinum
carbon nanotubes
Nanoparticles
nanoparticles
Energy storage
Microwaves
Electrodes
Single-walled carbon nanotubes (SWCN)
Energy conversion
energy storage
Raman spectroscopy
Capacitance
Carbon
Electrons
microwaves
Composite materials

Keywords

  • epr characterisation
  • platinum
  • nanoparticles
  • functionalised cnt
  • hybrid materials
  • physical chemistry

Cite this

Dennany, L., Sherrell, P., Chen, J., Innis, P. C., Wallace, G. G., Minett, A. I., & Intelligent Polymer Research Institute and ARC Centre of Excellence for Electromaterials Science, University of Wollongong, Australia (2010). EPR characterisation of platinum nanoparticle functionalised CNT hybrid materials. Physical Chemistry Chemical Physics, 12, 4135-4141. https://doi.org/10.1039/b923921a
Dennany, Lynn ; Sherrell, Peter ; Chen, Jun ; Innis, Peter C. ; Wallace, Gordon G. ; Minett, Andrew I. ; Intelligent Polymer Research Institute and ARC Centre of Excellence for Electromaterials Science, University of Wollongong, Australia. / EPR characterisation of platinum nanoparticle functionalised CNT hybrid materials. In: Physical Chemistry Chemical Physics. 2010 ; Vol. 12. pp. 4135-4141.
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Dennany, L, Sherrell, P, Chen, J, Innis, PC, Wallace, GG, Minett, AI & Intelligent Polymer Research Institute and ARC Centre of Excellence for Electromaterials Science, University of Wollongong, Australia 2010, 'EPR characterisation of platinum nanoparticle functionalised CNT hybrid materials' Physical Chemistry Chemical Physics, vol. 12, pp. 4135-4141. https://doi.org/10.1039/b923921a

EPR characterisation of platinum nanoparticle functionalised CNT hybrid materials. / Dennany, Lynn; Sherrell, Peter; Chen, Jun; Innis, Peter C.; Wallace, Gordon G.; Minett, Andrew I.; Intelligent Polymer Research Institute and ARC Centre of Excellence for Electromaterials Science, University of Wollongong, Australia.

In: Physical Chemistry Chemical Physics, Vol. 12, 2010, p. 4135-4141.

Research output: Contribution to journalArticle

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