Artículo
Electrochemical formation of copper phosphide from aqueous solutions of Cu(II) and hypophosphite ions
Torres, Daniel; Madriz Ruiz, Lorean Mercedes
; Vargas Balda, Ronald Eduardo
; Scharifker, Benjamín R.
Fecha de publicación:
10/09/2020
Editorial:
Pergamon-Elsevier Science Ltd
Revista:
Electrochimica Acta
ISSN:
0013-4686
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The electrochemical formation of copper phosphide phases on vitreous carbon electrodes from Cu(II) and hypophosphite acid aqueous solutions has been studied. It was found that the main component in the deposits was Cu, that their composition was independent of the electrodeposition potential, and that the P content increased with the proportion of hypophosphite with respect to Cu(II) in solution. Analysis of potentiostatic current transients recorded during deposition and the microscopic observation of the surface indicated that the mechanism of electrocrystallization occurs through copper electrodeposition, inducing the reduction of hypophosphite with concomitant formation of copper phosphide clusters followed by their aggregation, leading to the nucleation of three-dimensional centers with a growth rate controlled by the diffusion of electrodepositing species from the solution bulk, with generation also of byproducts of hypophosphite reduction.
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Articulos(CCT - LA PLATA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - LA PLATA
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - LA PLATA
Articulos(IIB-INTECH)
Articulos de INST.DE INVEST.BIOTECNOLOGICAS - INSTITUTO TECNOLOGICO CHASCOMUS
Articulos de INST.DE INVEST.BIOTECNOLOGICAS - INSTITUTO TECNOLOGICO CHASCOMUS
Articulos(INIFTA)
Articulos de INST.DE INV.FISICOQUIMICAS TEORICAS Y APLIC.
Articulos de INST.DE INV.FISICOQUIMICAS TEORICAS Y APLIC.
Citación
Torres, Daniel; Madriz Ruiz, Lorean Mercedes; Vargas Balda, Ronald Eduardo; Scharifker, Benjamín R.; Electrochemical formation of copper phosphide from aqueous solutions of Cu(II) and hypophosphite ions; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 354; 10-9-2020; 1-9
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