PtAg nanotubes for electrooxidation of ethylene glycol and glycerol in alkaline media

We report the electrocatalytic oxidation of ethylene glycol and glycerol in alkaline media over PtAg nanotubes (PtAgNTs), which were prepared through the partial galvanic exchange of Pt on Ag nanowires. The PtAgNTs demonstrated substantially enhanced electrocatalytic performance compared with Pt nan...

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Bibliographic Details
Published in:Electrochemistry communications 2014-09, Vol.46, p.36-39
Main Authors: Kim, Youngmin, Kim, Hyeonghun, Kim, Won Bae
Format: Article
Language:English
Subjects:
Alkaline electrolyte
Chemistry
Electrocatalytic oxidation
Electrochemistry
Ethylene glycol
Exact sciences and technology
General and physical chemistry
Glycerol
Kinetics and mechanism of reactions
Nanotube
Platinum-silver
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Summary:We report the electrocatalytic oxidation of ethylene glycol and glycerol in alkaline media over PtAg nanotubes (PtAgNTs), which were prepared through the partial galvanic exchange of Pt on Ag nanowires. The PtAgNTs demonstrated substantially enhanced electrocatalytic performance compared with Pt nanotubes and commercial Pt black and Pt/C catalysts as evidenced by their higher peak current densities, lower onset potentials and better anti-poisoning properties, which originated from the tailored geometric and electronic structures of the PtAgNTs. [Display omitted] •PtAg nanotubes (PtAgNTs) were prepared via a simple galvanic exchange method.•The PtAgNTs showed high activity for EG and Gly oxidation in alkaline media.•The activity enhancement arose from the structural and electronic effects.
ISSN:1388-2481
1873-1902
DOI:10.1016/j.elecom.2014.06.007