dc.contributor.author |
Modibedi, Remegia M
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|
dc.contributor.author |
Masombuka, T
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dc.contributor.author |
Mathe, Mahlanyane K
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dc.date.accessioned |
2012-04-12T09:55:34Z |
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dc.date.available |
2012-04-12T09:55:34Z |
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dc.date.issued |
2011-04 |
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dc.identifier.citation |
Modibedi, RM, Masombuka, T and Mathe, MK. 2011. Carbon supported Pd-Sn and Pd-Ru-Sn nanocatalysts for ethanol electro-oxidation in alkaline medium. International Journal of Hydrogen Energy, vol. 36(8), pp 4664-4672 |
en_US |
dc.identifier.issn |
0360-3199 |
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dc.identifier.uri |
http://www.sciencedirect.com/science/article/pii/S0360319911000383
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dc.identifier.uri |
http://hdl.handle.net/10204/5744
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dc.description |
Copyright: 2011 Elsevier. This is an ABSTRACT ONLY. |
en_US |
dc.description.abstract |
Carbon supported Pd-Sn and Pd-Ru-Sn nanocatalysts were prepared by the chemical reduction method, using sodium borohydride and ethylene glycol mixture as the reducing agent. The catalytic activity towards ethanol electro-oxidation in alkaline medium was studied by cyclic, carbon monoxide stripping voltammetries and chronoamperometry. The current density obtained for the electro-oxidation was affected by varying ethanol concentration between 0.25 and 4 M. Raising ethanol concentration up to 3 M increased the coverage of the adsorbed ethoxy (CH3COads) species on the nanocatalyst surface, thus yielding an increase in current density. Pd-Sn/C displayed better electrocatalytic activity and stability towards poisoning than Pd-Ru-Sn/C and Pt-Ru/C (E-TEK Inc.) nanocatalysts. Transmission electron microscopy results showed that Pd-Sn and Pd-Ru-Sn nanoparticles were uniformly dispersed on carbon support. The average particle size of Pd-Sn was 7± 0.5 nm in diameter while for Pd-Ru-Sn was 6 ± 0.7 nm. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Elsevier |
en_US |
dc.relation.ispartofseries |
Workflow;8780 |
|
dc.subject |
Sodium borohydride |
en_US |
dc.subject |
Ethylene glycol |
en_US |
dc.subject |
Palladium-based nanocatalysts |
en_US |
dc.subject |
Ethanol electro-oxidation |
en_US |
dc.subject |
Concentration effect |
en_US |
dc.title |
Carbon supported Pd-Sn and Pd-Ru-Sn nanocatalysts for ethanol electro-oxidation in alkaline medium |
en_US |
dc.type |
Article |
en_US |
dc.identifier.apacitation |
Modibedi, R. M., Masombuka, T., & Mathe, M. K. (2011). Carbon supported Pd-Sn and Pd-Ru-Sn nanocatalysts for ethanol electro-oxidation in alkaline medium. http://hdl.handle.net/10204/5744 |
en_ZA |
dc.identifier.chicagocitation |
Modibedi, Remegia M, T Masombuka, and Mahlanyane K Mathe "Carbon supported Pd-Sn and Pd-Ru-Sn nanocatalysts for ethanol electro-oxidation in alkaline medium." (2011) http://hdl.handle.net/10204/5744 |
en_ZA |
dc.identifier.vancouvercitation |
Modibedi RM, Masombuka T, Mathe MK. Carbon supported Pd-Sn and Pd-Ru-Sn nanocatalysts for ethanol electro-oxidation in alkaline medium. 2011; http://hdl.handle.net/10204/5744. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Modibedi, Remegia M
AU - Masombuka, T
AU - Mathe, Mahlanyane K
AB - Carbon supported Pd-Sn and Pd-Ru-Sn nanocatalysts were prepared by the chemical reduction method, using sodium borohydride and ethylene glycol mixture as the reducing agent. The catalytic activity towards ethanol electro-oxidation in alkaline medium was studied by cyclic, carbon monoxide stripping voltammetries and chronoamperometry. The current density obtained for the electro-oxidation was affected by varying ethanol concentration between 0.25 and 4 M. Raising ethanol concentration up to 3 M increased the coverage of the adsorbed ethoxy (CH3COads) species on the nanocatalyst surface, thus yielding an increase in current density. Pd-Sn/C displayed better electrocatalytic activity and stability towards poisoning than Pd-Ru-Sn/C and Pt-Ru/C (E-TEK Inc.) nanocatalysts. Transmission electron microscopy results showed that Pd-Sn and Pd-Ru-Sn nanoparticles were uniformly dispersed on carbon support. The average particle size of Pd-Sn was 7± 0.5 nm in diameter while for Pd-Ru-Sn was 6 ± 0.7 nm.
DA - 2011-04
DB - ResearchSpace
DP - CSIR
KW - Sodium borohydride
KW - Ethylene glycol
KW - Palladium-based nanocatalysts
KW - Ethanol electro-oxidation
KW - Concentration effect
LK - https://researchspace.csir.co.za
PY - 2011
SM - 0360-3199
T1 - Carbon supported Pd-Sn and Pd-Ru-Sn nanocatalysts for ethanol electro-oxidation in alkaline medium
TI - Carbon supported Pd-Sn and Pd-Ru-Sn nanocatalysts for ethanol electro-oxidation in alkaline medium
UR - http://hdl.handle.net/10204/5744
ER -
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en_ZA |