SYNTHESIS AND CHARACTERIZATION OF COPPER NANOPARTICLES SUPPORTED IN CARBON NANOTUBES MULTIPLE WALLS PREPARED BY CLD AND SMAD

ABSTRACT The synthesis and characterization of copper nanoparticles supported in carbon nanotubes is reported. Copper nanoparticles were obtained by the CLD (chemical liquid deposition) method consisting of reduced pressure evaporation of metals and subsequent low-temperature condensation (77K) of t...

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Autores principales:	Cárdenas-Triviño,Galo, Sepúlveda-Bustamante,Eva
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2021
Materias:	Copper nanoparticles carbon nanotubes electron diffraction transmission electron microscopy
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072021000105110
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spelling	oai:scielo:S0717-970720210001051102021-04-22SYNTHESIS AND CHARACTERIZATION OF COPPER NANOPARTICLES SUPPORTED IN CARBON NANOTUBES MULTIPLE WALLS PREPARED BY CLD AND SMADCárdenas-Triviño,GaloSepúlveda-Bustamante,Eva Copper nanoparticles carbon nanotubes electron diffraction transmission electron microscopy ABSTRACT The synthesis and characterization of copper nanoparticles supported in carbon nanotubes is reported. Copper nanoparticles were obtained by the CLD (chemical liquid deposition) method consisting of reduced pressure evaporation of metals and subsequent low-temperature condensation (77K) of these vapors, with organic solvent vapors. From the reactions obtained by this method, copper colloids of concentrations 10-3 and 10-4 were synthesized in the organic solvents 2-propanol, 2-mercaptoethanol, 2-methoxyethanol and 2-ethoxyethanol. The support of copper nanoparticles in the carbon nanotubes was made by SMAD method with 24 hours under agitation and nitrogen atmosphere before collecting, obtaining copper nanoparticle solids supported in carbon nanotubes by evaporating the solvent either 2-mercaptoethanol or 2-ethoxyethanol. Colloidal and solid dispersions were characterized by diverse techniques, for colloidal dispersions UV-Vis spectrophotometry, electrophoretic mobility, electron transmission microscopy (TEM), electron diffraction and stability over time was used. Far-medium infrared spectroscopy (FT-IR) and thermogravimetry (TGA) were used for solids. These analyses show that Cu colloids are relatively stable in the solvents used, the most stable dispersion was synthesized in 2-mercaptoethanol and the less stable is synthesized in 2-methoxyethanol, which is demonstrated in UV spectra. By TEM, particle sizes were studied, between 5.2 and 17.2 nm. Electron diffraction confirms the presence of copper. Analysis of active solids shows in the case of FTIR that solvents are incorporated into copper particles, and in the case of thermograms it is shown that the solids synthesized in the solvent had greater thermal stability 2-mercaptoethanol. It was impossible to obtain electron diffraction from the copper nanoparticles visualized because they are incorporated in the multiwall nanotubes.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.66 n.1 20212021-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072021000105110en10.4067/S0717-97072021000105110
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Copper nanoparticles carbon nanotubes electron diffraction transmission electron microscopy
spellingShingle	Copper nanoparticles carbon nanotubes electron diffraction transmission electron microscopy Cárdenas-Triviño,Galo Sepúlveda-Bustamante,Eva SYNTHESIS AND CHARACTERIZATION OF COPPER NANOPARTICLES SUPPORTED IN CARBON NANOTUBES MULTIPLE WALLS PREPARED BY CLD AND SMAD
description	ABSTRACT The synthesis and characterization of copper nanoparticles supported in carbon nanotubes is reported. Copper nanoparticles were obtained by the CLD (chemical liquid deposition) method consisting of reduced pressure evaporation of metals and subsequent low-temperature condensation (77K) of these vapors, with organic solvent vapors. From the reactions obtained by this method, copper colloids of concentrations 10-3 and 10-4 were synthesized in the organic solvents 2-propanol, 2-mercaptoethanol, 2-methoxyethanol and 2-ethoxyethanol. The support of copper nanoparticles in the carbon nanotubes was made by SMAD method with 24 hours under agitation and nitrogen atmosphere before collecting, obtaining copper nanoparticle solids supported in carbon nanotubes by evaporating the solvent either 2-mercaptoethanol or 2-ethoxyethanol. Colloidal and solid dispersions were characterized by diverse techniques, for colloidal dispersions UV-Vis spectrophotometry, electrophoretic mobility, electron transmission microscopy (TEM), electron diffraction and stability over time was used. Far-medium infrared spectroscopy (FT-IR) and thermogravimetry (TGA) were used for solids. These analyses show that Cu colloids are relatively stable in the solvents used, the most stable dispersion was synthesized in 2-mercaptoethanol and the less stable is synthesized in 2-methoxyethanol, which is demonstrated in UV spectra. By TEM, particle sizes were studied, between 5.2 and 17.2 nm. Electron diffraction confirms the presence of copper. Analysis of active solids shows in the case of FTIR that solvents are incorporated into copper particles, and in the case of thermograms it is shown that the solids synthesized in the solvent had greater thermal stability 2-mercaptoethanol. It was impossible to obtain electron diffraction from the copper nanoparticles visualized because they are incorporated in the multiwall nanotubes.
author	Cárdenas-Triviño,Galo Sepúlveda-Bustamante,Eva
author_facet	Cárdenas-Triviño,Galo Sepúlveda-Bustamante,Eva
author_sort	Cárdenas-Triviño,Galo
title	SYNTHESIS AND CHARACTERIZATION OF COPPER NANOPARTICLES SUPPORTED IN CARBON NANOTUBES MULTIPLE WALLS PREPARED BY CLD AND SMAD
title_short	SYNTHESIS AND CHARACTERIZATION OF COPPER NANOPARTICLES SUPPORTED IN CARBON NANOTUBES MULTIPLE WALLS PREPARED BY CLD AND SMAD
title_full	SYNTHESIS AND CHARACTERIZATION OF COPPER NANOPARTICLES SUPPORTED IN CARBON NANOTUBES MULTIPLE WALLS PREPARED BY CLD AND SMAD
title_fullStr	SYNTHESIS AND CHARACTERIZATION OF COPPER NANOPARTICLES SUPPORTED IN CARBON NANOTUBES MULTIPLE WALLS PREPARED BY CLD AND SMAD
title_full_unstemmed	SYNTHESIS AND CHARACTERIZATION OF COPPER NANOPARTICLES SUPPORTED IN CARBON NANOTUBES MULTIPLE WALLS PREPARED BY CLD AND SMAD
title_sort	synthesis and characterization of copper nanoparticles supported in carbon nanotubes multiple walls prepared by cld and smad
publisher	Sociedad Chilena de Química
publishDate	2021
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072021000105110
work_keys_str_mv	AT cardenastrivinogalo synthesisandcharacterizationofcoppernanoparticlessupportedincarbonnanotubesmultiplewallspreparedbycldandsmad AT sepulvedabustamanteeva synthesisandcharacterizationofcoppernanoparticlessupportedincarbonnanotubesmultiplewallspreparedbycldandsmad
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SYNTHESIS AND CHARACTERIZATION OF COPPER NANOPARTICLES SUPPORTED IN CARBON NANOTUBES MULTIPLE WALLS PREPARED BY CLD AND SMAD

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