About: Oxidation of propenol on nanostructured Ni and NiZn electrodes in alkaline solution

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Description	Oxidation of propenol on nanostructured pulse plated Ni and NiZn alloys in alkaline solution gives the corresponding aldehyde, propenal, as the major product. The process is redox mediated by the NiOOH/Ni(OH)(2) couple and starts as soon as NiOOH is formed on the surface. Depending on the applied potential, propenol oxidation takes place in parallel with water oxidation. The latter requires a higher surface concentration of NiOOH compared to propenol oxidation, indicating that a binuclear mechanism for oxygen evolution prevails at low overpotentials. The redox reaction of nickel oxide is markedly slower at the NiZn alloy than for solid Ni or pulse plated Ni, which also is reflected in the oxidation of water and propenol. Separation of all three oxidation currents (Ni(OH)(2), water and propenol) shows that pulse plated Ni is more efficient as catalyst than NiZn per NiOOH site, for both water and propenol oxidation. The role of Zn ions in the mixed NiZn hydroxide is discussed and a mechanism for propenol oxidation is suggested. (C) 2014 Elsevier Ltd. All rights reserved. Oxidation of propenol on nanostructured pulse plated Ni and NiZn alloys in alkaline solution gives the corresponding aldehyde, propenal, as the major product. The process is redox mediated by the NiOOH/Ni(OH)(2) couple and starts as soon as NiOOH is formed on the surface. Depending on the applied potential, propenol oxidation takes place in parallel with water oxidation. The latter requires a higher surface concentration of NiOOH compared to propenol oxidation, indicating that a binuclear mechanism for oxygen evolution prevails at low overpotentials. The redox reaction of nickel oxide is markedly slower at the NiZn alloy than for solid Ni or pulse plated Ni, which also is reflected in the oxidation of water and propenol. Separation of all three oxidation currents (Ni(OH)(2), water and propenol) shows that pulse plated Ni is more efficient as catalyst than NiZn per NiOOH site, for both water and propenol oxidation. The role of Zn ions in the mixed NiZn hydroxide is discussed and a mechanism for propenol oxidation is suggested. (C) 2014 Elsevier Ltd. All rights reserved. (en)
Title	Oxidation of propenol on nanostructured Ni and NiZn electrodes in alkaline solution Oxidation of propenol on nanostructured Ni and NiZn electrodes in alkaline solution (en)
skos:prefLabel	Oxidation of propenol on nanostructured Ni and NiZn electrodes in alkaline solution Oxidation of propenol on nanostructured Ni and NiZn electrodes in alkaline solution (en)
skos:notation	RIV/61388955:_____/14:00434969!RIV15-AV0-61388955
http://linked.open...avai/riv/aktivita	I
http://linked.open...avai/riv/aktivity	I
http://linked.open...iv/cisloPeriodika	SEP 2014
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Jirkovský, Jakub Krtil, Petr
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyzikální chemie J. Heyrovského AV ČR, v.v.i.
http://linked.open...dnocenehoVysledku	35529
http://linked.open...ai/riv/idVysledku	RIV/61388955:_____/14:00434969
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	electrodeposition; DEMS; pulse plating (en)
http://linked.open.../riv/klicoveSlovo	DEMS pulse plating electrodeposition
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[0DE2D1C6F8C4]
http://linked.open...i/riv/nazevZdroje	Electrochimica acta
http://linked.open...in/vavai/riv/obor	CG
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	139
http://linked.open...iv/tvurceVysledku	Ahlberg, E. Jirkovský, Jakub Krtil, Petr Göransson, G.
http://linked.open...ain/vavai/riv/wos	000342275200047
issn	0013-4686
number of pages	11 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.electacta.2014.06.169

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