Estudo da eletrocristalização de Ni e Ni-P sobre ultramicroeletrodo de platina Study of electrocrystallization of Ni and Ni-P on platinum ultramicroelectrode

<abstract language="eng">This work describes a comparative study of the electrocrystallization of Ni and Ni-P on Pt ultramicroelectrodes using chronoamperometric measurements. It was possible to confirm that in all cases a progressive nucleation was the predominant mechanism. Moreove...

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Main Authors:	Katlin Ivon Barrios Eguiluz, Luis Alberto Avaca, Cláudia Smaniotto Barin
Format:	Article
Language:	English
Published:	Sociedade Brasileira de Química 2008-01-01
Series:	Química Nova
Subjects:	electrocrystallization nickel-phosphorous Pt ultramicroelectrode
Online Access:	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000500042

id	doaj-72723b9a61454878b746057701e45478
record_format	Article
spelling	doaj-72723b9a61454878b746057701e454782020-11-24T22:09:22ZengSociedade Brasileira de QuímicaQuímica Nova0100-40421678-70642008-01-013151150115510.1590/S0100-40422008000500042Estudo da eletrocristalização de Ni e Ni-P sobre ultramicroeletrodo de platina Study of electrocrystallization of Ni and Ni-P on platinum ultramicroelectrodeKatlin Ivon Barrios EguiluzLuis Alberto AvacaCláudia Smaniotto Barin<abstract language="eng">This work describes a comparative study of the electrocrystallization of Ni and Ni-P on Pt ultramicroelectrodes using chronoamperometric measurements. It was possible to confirm that in all cases a progressive nucleation was the predominant mechanism. Moreover, the application of the Atomistic Theory to the experimental rate of nuclei formation showed that the number of atoms in the critical nucleus was zero, except for Ni-P on Pt at low overpotentials were a value of one was observed. Furthermore, the physical characterisation of the different deposits on Pt by atomic force microscopy allowed observing the coalescence of the hemispherical nuclei of Ni and Ni-P at t max thus confirming the results obtained from the current-time analysis.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000500042electrocrystallizationnickel-phosphorousPt ultramicroelectrode
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Katlin Ivon Barrios Eguiluz Luis Alberto Avaca Cláudia Smaniotto Barin
spellingShingle	Katlin Ivon Barrios Eguiluz Luis Alberto Avaca Cláudia Smaniotto Barin Estudo da eletrocristalização de Ni e Ni-P sobre ultramicroeletrodo de platina Study of electrocrystallization of Ni and Ni-P on platinum ultramicroelectrode Química Nova electrocrystallization nickel-phosphorous Pt ultramicroelectrode
author_facet	Katlin Ivon Barrios Eguiluz Luis Alberto Avaca Cláudia Smaniotto Barin
author_sort	Katlin Ivon Barrios Eguiluz
title	Estudo da eletrocristalização de Ni e Ni-P sobre ultramicroeletrodo de platina Study of electrocrystallization of Ni and Ni-P on platinum ultramicroelectrode
title_short	Estudo da eletrocristalização de Ni e Ni-P sobre ultramicroeletrodo de platina Study of electrocrystallization of Ni and Ni-P on platinum ultramicroelectrode
title_full	Estudo da eletrocristalização de Ni e Ni-P sobre ultramicroeletrodo de platina Study of electrocrystallization of Ni and Ni-P on platinum ultramicroelectrode
title_fullStr	Estudo da eletrocristalização de Ni e Ni-P sobre ultramicroeletrodo de platina Study of electrocrystallization of Ni and Ni-P on platinum ultramicroelectrode
title_full_unstemmed	Estudo da eletrocristalização de Ni e Ni-P sobre ultramicroeletrodo de platina Study of electrocrystallization of Ni and Ni-P on platinum ultramicroelectrode
title_sort	estudo da eletrocristalização de ni e ni-p sobre ultramicroeletrodo de platina study of electrocrystallization of ni and ni-p on platinum ultramicroelectrode
publisher	Sociedade Brasileira de Química
series	Química Nova
issn	0100-4042 1678-7064
publishDate	2008-01-01
description	<abstract language="eng">This work describes a comparative study of the electrocrystallization of Ni and Ni-P on Pt ultramicroelectrodes using chronoamperometric measurements. It was possible to confirm that in all cases a progressive nucleation was the predominant mechanism. Moreover, the application of the Atomistic Theory to the experimental rate of nuclei formation showed that the number of atoms in the critical nucleus was zero, except for Ni-P on Pt at low overpotentials were a value of one was observed. Furthermore, the physical characterisation of the different deposits on Pt by atomic force microscopy allowed observing the coalescence of the hemispherical nuclei of Ni and Ni-P at t max thus confirming the results obtained from the current-time analysis.
topic	electrocrystallization nickel-phosphorous Pt ultramicroelectrode
url	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000500042
work_keys_str_mv	AT katlinivonbarrioseguiluz estudodaeletrocristalizacaodenienipsobreultramicroeletrododeplatinastudyofelectrocrystallizationofniandniponplatinumultramicroelectrode AT luisalbertoavaca estudodaeletrocristalizacaodenienipsobreultramicroeletrododeplatinastudyofelectrocrystallizationofniandniponplatinumultramicroelectrode AT claudiasmaniottobarin estudodaeletrocristalizacaodenienipsobreultramicroeletrododeplatinastudyofelectrocrystallizationofniandniponplatinumultramicroelectrode
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Estudo da eletrocristalização de Ni e Ni-P sobre ultramicroeletrodo de platina Study of electrocrystallization of Ni and Ni-P on platinum ultramicroelectrode

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