Journal
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume 166, Issue 16, Pages F1284-F1291Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/2.0071916jes
Keywords
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Funding
- Estonian Ministry of Education and Research [IUT20-16, IUT2-24]
- EU through the European Regional Development Fund [TK141]
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Titanium dioxide coatings of different thicknesses were deposited on the acid-treated multiwall carbon nanotubes (MWCNTs) using controlled atomic layer deposition (ALD). Pt nanoparticles (NP) were deposited on TiO2/MWCNT supports using two deposition methods, viz. sputter-deposition and photo-deposition. Scanning electron microscopy (SEM) and scanning transmission electron microscopy (STEM) measurements revealed successful application of ALD for the deposition of TiO2. Both magnetron sputtering and photo-deposition were found to be efficient and well-controlled techniques for the deposition of Pt NPs on oxide-carbon support. Electrochemical decontamination and characterization of the catalysts surface was carried out by CO stripping and cyclic voltammetry in 0.1 M KOH solution. The prepared Pt-TiO2/MWCNT catalyst showed comparable oxygen reduction reaction (ORR) activity to that of commercial Pt/C (20 wt%), while long-term durability test revealed better durability of the prepared catalysts due to strong metal-support interaction. (C) The Author(s) 2019. Published by ECS.
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