Ultrasound assisted electrodeposition of Cu-SiO<SUB>2</SUB> composite coatings: effect of particles surface chemistry

Electrodeposition of Cu-SiO2 composite coatings from an alkaline non-cyanide electrolyte containing glutamate as complexing agent was studied. Silica mesoporous particles were synthesized using a modified Stöber methodology, and later their surface chemistry was changed by functionalizing them with...

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Autores principales: Bengoa, Leandro Nicolás, Ispas, A., Bengoa, José Fernando, Bund, A., Egli, Walter Alfredo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2019
Materias:
Ingeniería Química
Cu-SiO2 Composite Coatings
MCM-41
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/130118
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-130118
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
Cu-SiO2 Composite Coatings
MCM-41
spellingShingle Ingeniería Química
Cu-SiO2 Composite Coatings
MCM-41
Bengoa, Leandro Nicolás
Ispas, A.
Bengoa, José Fernando
Bund, A.
Egli, Walter Alfredo
Ultrasound assisted electrodeposition of Cu-SiO<SUB>2</SUB> composite coatings: effect of particles surface chemistry
topic_facet Ingeniería Química
Cu-SiO2 Composite Coatings
MCM-41
description Electrodeposition of Cu-SiO2 composite coatings from an alkaline non-cyanide electrolyte containing glutamate as complexing agent was studied. Silica mesoporous particles were synthesized using a modified Stöber methodology, and later their surface chemistry was changed by functionalizing them with 3-aminopropyltriethoxysilane. Particles microstructure and morphology were characterized (SEM, TEM, XRD) and their charging behavior in several electrolytes was studied through ζ -potential measurements. Galvanostatic deposition was performed in electrolytes containing both as-prepared and functionalized SiO2 at various current densities, and the influence of ultrasonic irradiation (37 Hz) was evaluated. For some experiments, 1.5 g L− of Polyquaternium 7 were added to the solution. SEM and XRD were used to characterized coatings morphology and microstructure, whereas EDS was used to estimate SiO2 wt%. The results showed that the effect of ultrasound on the codeposition process depends on current density and particle surface chemistry. All the trends observed in this study could be explained taking into account ζ -potential values recorded and previously reported theories. Adjusting the experimental conditions, it was possible to obtain deposits with SiO2 contents of ≈5 wt%. Finally, it was found that both ultrasonic irradiation and Polyquaternium 7 affect the morphology and crystal orientation of the deposits.
format Articulo
Articulo
author Bengoa, Leandro Nicolás
Ispas, A.
Bengoa, José Fernando
Bund, A.
Egli, Walter Alfredo
author_facet Bengoa, Leandro Nicolás
Ispas, A.
Bengoa, José Fernando
Bund, A.
Egli, Walter Alfredo
author_sort Bengoa, Leandro Nicolás
title Ultrasound assisted electrodeposition of Cu-SiO<SUB>2</SUB> composite coatings: effect of particles surface chemistry
title_short Ultrasound assisted electrodeposition of Cu-SiO<SUB>2</SUB> composite coatings: effect of particles surface chemistry
title_full Ultrasound assisted electrodeposition of Cu-SiO<SUB>2</SUB> composite coatings: effect of particles surface chemistry
title_fullStr Ultrasound assisted electrodeposition of Cu-SiO<SUB>2</SUB> composite coatings: effect of particles surface chemistry
title_full_unstemmed Ultrasound assisted electrodeposition of Cu-SiO<SUB>2</SUB> composite coatings: effect of particles surface chemistry
title_sort ultrasound assisted electrodeposition of cu-sio<sub>2</sub> composite coatings: effect of particles surface chemistry
publishDate 2019
url http://sedici.unlp.edu.ar/handle/10915/130118
work_keys_str_mv AT bengoaleandronicolas ultrasoundassistedelectrodepositionofcusiosub2subcompositecoatingseffectofparticlessurfacechemistry
AT ispasa ultrasoundassistedelectrodepositionofcusiosub2subcompositecoatingseffectofparticlessurfacechemistry
AT bengoajosefernando ultrasoundassistedelectrodepositionofcusiosub2subcompositecoatingseffectofparticlessurfacechemistry
AT bunda ultrasoundassistedelectrodepositionofcusiosub2subcompositecoatingseffectofparticlessurfacechemistry
AT egliwalteralfredo ultrasoundassistedelectrodepositionofcusiosub2subcompositecoatingseffectofparticlessurfacechemistry
bdutipo_str Repositorios
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