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Statements

Subject Item
n2:RIV%2F61388955%3A_____%2F14%3A00434969%21RIV15-AV0-61388955
rdf:type
skos:Concept n12:Vysledek
dcterms: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.
dcterms: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
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
skos:notation
RIV/61388955:_____/14:00434969!RIV15-AV0-61388955
n3:aktivita
n13:I
n3:aktivity
I
n3:cisloPeriodika
SEP 2014
n3:dodaniDat
n16:2015
n3:domaciTvurceVysledku
n10:5881641 n10:3778339
n3:druhVysledku
n14:J
n3:duvernostUdaju
n5:S
n3:entitaPredkladatele
n6:predkladatel
n3:idSjednocenehoVysledku
35529
n3:idVysledku
RIV/61388955:_____/14:00434969
n3:jazykVysledku
n15:eng
n3:klicovaSlova
electrodeposition; DEMS; pulse plating
n3:klicoveSlovo
n4:DEMS n4:electrodeposition n4:pulse%20plating
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[0DE2D1C6F8C4]
n3:nazevZdroje
Electrochimica acta
n3:obor
n17:CG
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
4
n3:rokUplatneniVysledku
n16:2014
n3:svazekPeriodika
139
n3:tvurceVysledku
Jirkovský, Jakub Ahlberg, E. Göransson, G. Krtil, Petr
n3:wos
000342275200047
s:issn
0013-4686
s:numberOfPages
11
n8:doi
10.1016/j.electacta.2014.06.169