Electrochemical reduction of copper complexes with glycine, alanine and valine

Basic electrochemical studies of coordination complexes between cupric ions and simple amino acids as ligands (L), namely glycine, alanine and valine, have been carried out to provide insight in the effect of complexation on Cu2+ discharge electrochemistry. The results show that there are strong dif...

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Autores principales:	Pary, Paola, Bengoa, Leandro Nicolás, Azpeitia, Leticia Anahí, Seré, Pablo Ricardo, Ramallo López, José Martín, Bolzán, Agustín Eduardo, Egli, Walter Alfredo
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2021
Materias:	Ingeniería Química copper glycine alanine valine
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/130121
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-130121
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ingeniería Química copper glycine alanine valine
spellingShingle	Ingeniería Química copper glycine alanine valine Pary, Paola Bengoa, Leandro Nicolás Azpeitia, Leticia Anahí Seré, Pablo Ricardo Ramallo López, José Martín Bolzán, Agustín Eduardo Egli, Walter Alfredo Electrochemical reduction of copper complexes with glycine, alanine and valine
topic_facet	Ingeniería Química copper glycine alanine valine
description	Basic electrochemical studies of coordination complexes between cupric ions and simple amino acids as ligands (L), namely glycine, alanine and valine, have been carried out to provide insight in the effect of complexation on Cu2+ discharge electrochemistry. The results show that there are strong differences in their cyclic voltammograms, despite the similarities in coordination equilibrium, central atom d electronic structure and inner sphere coordination distances (verified by chemical equilibrium quantification, UV spectroscopy and EXAFS). Evidence of mass transport limitations by diffusion of the neutral CuL2 complexes in solution, and cuprous species generation on the electrode during copper electrodeposition was found, both of which proved to be the main phenomena accounting for the different electrochemical behaviour previously mentioned. Voltammetric studies also showed that, surprisingly, cuprous species are produced not only at the onset of copper electroreduction but at more cathodic potentials. Furthermore, results suggest the existence of a cuprous compound layer beneath the metallic copper deposit. The data gathered in this investigation, leads to the conclusion that the bigger molecular size and organic nature of the ligands induce unexpected processes on the copper electroreduction mechanism.
format	Articulo Articulo
author	Pary, Paola Bengoa, Leandro Nicolás Azpeitia, Leticia Anahí Seré, Pablo Ricardo Ramallo López, José Martín Bolzán, Agustín Eduardo Egli, Walter Alfredo
author_facet	Pary, Paola Bengoa, Leandro Nicolás Azpeitia, Leticia Anahí Seré, Pablo Ricardo Ramallo López, José Martín Bolzán, Agustín Eduardo Egli, Walter Alfredo
author_sort	Pary, Paola
title	Electrochemical reduction of copper complexes with glycine, alanine and valine
title_short	Electrochemical reduction of copper complexes with glycine, alanine and valine
title_full	Electrochemical reduction of copper complexes with glycine, alanine and valine
title_fullStr	Electrochemical reduction of copper complexes with glycine, alanine and valine
title_full_unstemmed	Electrochemical reduction of copper complexes with glycine, alanine and valine
title_sort	electrochemical reduction of copper complexes with glycine, alanine and valine
publishDate	2021
url	http://sedici.unlp.edu.ar/handle/10915/130121
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bdutipo_str	Repositorios
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Electrochemical reduction of copper complexes with glycine, alanine and valine

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