Journal
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
Volume 735, Issue -, Pages 68-76Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2014.10.008
Keywords
Oxygen reduction; Electrocatalysis; Carbon nanotubes; Titanium dioxide; Pt nanoparticles; Composite catalysts
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Funding
- Estonian Ministry of Education and Research [IUT20-16, IUT2-24]
- Estonian Research Council [9323]
- Archimedes Foundation [3.2.0501.10-0015]
- European Social Fund in the University of Tartu, Estonia [1.2.0401.09-0079]
- [TK117]
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Pt nanoparticle-titanium dioxide/multi-walled carbon nanotube (Pt-TiO2/MWCNT) materials were synthesised by combining chemical vapour deposition (CVD), atomic layer deposition (ALD) and magnetron sputtering techniques. These composite materials were employed as electrocatalysts for oxygen reduction reaction (ORR). The surface morphology of the prepared catalysts as well as their supports was examined by scanning electron microscopy (SEM). The SEM images revealed the preferential growth of aligned MWCNTs. The surface composition of Pt-TiO2/MWCNT catalysts was characterised using X-ray photoelectron spectroscopy (XPS). Their electrocatalytic properties toward the ORR were investigated in acid and alkaline media using the rotating disk electrode (RDE) technique. The ORR activity of Pt-TiO2/MWCNT was compared with that of commercial Pt/C catalyst and bulk Pt. (C) 2014 Elsevier B.V. All rights reserved.
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