Electrocatalytic oxidation of ethylene glycol at palladium-bimetallic nanocatalysts (PdSn and PdNi) supported on sulfonate-functionalised multi-walled carbon nanotubes
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Date
Authors
Ramulifho, Tendamudzimu
Ozoemena, Kenneth I.
Modibedi, Remegia M.
Jafta, Charl Jeremy
Mathe, Mkhulu K.
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Abstract
Electrocatalytic oxidation of ethylene glycol (EG) in alkaline medium using nano-scaled palladium-based
bimetallic catalysts (PdM, where M = Ni and Sn) supported on sulfonated multi-walled carbon nanotubes
(SF-MWCNTs) is compared. The bimetallic mixture (i.e., SF-MWCNT–PdSnmix and SF-MWCNT–PdNimix)
showed better electrocatalysis towards EG oxidation than the SF-MWCNT–Pd. At the SF-MWCNT–
PdSnmix platform, oxidation of EG occurred at lower onset and peak potentials, higher current density,
and faster kinetics (lower impedance) than at the SF-MWCNT–PdNimix platform. EG oxidation at the
SF-MWCNT–PdNimix is more stable than at the SF-MWCNT–PdSnmix. Indeed, Sn is a more favoured cocatalyst
with Pd in EG electro-oxidation.
Description
Keywords
Ethylene glycol, Electro-oxidation, Bimetallic catalysts, PdSn nanocatalyst
Sustainable Development Goals
Citation
Ramulifho, T, Ozoemena, KI, Modibedi, RM, Jafta, CJ, Mathe, MK 2013, 'Electrocatalytic oxidation of ethylene glycol at palladium-bimetallic nanocatalysts (PdSn and PdNi) supported on sulfonate-functionalised multi-walled carbon nanotubes', Journal of Electroanalytical Chemistry, vol. 692, pp. 26-30.