کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
219112 | 463247 | 2013 | 5 صفحه PDF | دانلود رایگان |
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 co-catalyst with Pd in EG electro-oxidation.
► PdSnmix and PdNimix showed enhanced electrocatalysis towards ethylene glycol.
► PdSnmix is better than PdNimix in terms of current density and electro-kinetics.
► PdNimix is better than the PdSnmix in terms of electrochemical stability.
► PdSnmix may be more favoured for direct alkaline ethylene glycol fuel cell.
Journal: Journal of Electroanalytical Chemistry - Volume 692, 1 March 2013, Pages 26–30