SYNTHESIS AND CHARACTERIZATION OF Co-Ni COLLOIDS PREPARED IN NONAQUEOUS SOLVENTS

The synthesis of Co-Ni bimetallic colloids nanoparticles by the CLD method were obtained. The metals were melted and evaporated in a metal atom reactor and cocondensed with ethanol, 2-propanol and 2-methoxyethanol at 77 K. The colloids were characterized by transmission electron microscopy (TEM), ul...

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Autores principales:	CÁRDENAS TRIVIÑO,GALO, LILLO GARRIDO,VIVIANA
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2007
Materias:	Nano particles colloids cobalt nickel
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072007000200014
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spelling	oai:scielo:S0717-970720070002000142007-09-13SYNTHESIS AND CHARACTERIZATION OF Co-Ni COLLOIDS PREPARED IN NONAQUEOUS SOLVENTSCÁRDENAS TRIVIÑO,GALOLILLO GARRIDO,VIVIANA Nano particles colloids cobalt nickel The synthesis of Co-Ni bimetallic colloids nanoparticles by the CLD method were obtained. The metals were melted and evaporated in a metal atom reactor and cocondensed with ethanol, 2-propanol and 2-methoxyethanol at 77 K. The colloids were characterized by transmission electron microscopy (TEM), ultraviolet spectroscopy (UV-VIS), EDX and electrophoresis. The stability at room temperature was also measured. The higher stability dispersion (> 40 days) was Co-Ni/ ethanol, Co-Ni/ 2-methoxyethanol and Co-Ni/ 2-propanol (< 10 days). The electrophoresis showed that particles are positively charged for the alcohols (62 mV for ethanol and 1.4x10-3 mV for 2-propanol) and 9.64 mV negatively charged for 2-methoxyethanol. The particles size of the bimetal colloids ranges from 5.7 to 9.8 nm. The active solids were obtained by solvent evaporation from the colloids dispersion. The microanalysis showed the presence of C, H between 5 to 13% which is indicative that the solvent is incorporated in the solid. The thermogravimetric analysis (TGA) reveals the thermal stability of the active solids. The Co-Ni/ ethanol and Co-Ni/ 2-propanol exhibit a weight loss of 20% w/w, while the Co-Ni/ 2- methoxyethanol shows a weight loss of 42% being the less stable solid. The FTIR of the active solids in KBr pellets exhibit the presence of the solvents incorporated in the active solidinfo:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.52 n.2 20072007-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072007000200014en10.4067/S0717-97072007000200014
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Nano particles colloids cobalt nickel
spellingShingle	Nano particles colloids cobalt nickel CÁRDENAS TRIVIÑO,GALO LILLO GARRIDO,VIVIANA SYNTHESIS AND CHARACTERIZATION OF Co-Ni COLLOIDS PREPARED IN NONAQUEOUS SOLVENTS
description	The synthesis of Co-Ni bimetallic colloids nanoparticles by the CLD method were obtained. The metals were melted and evaporated in a metal atom reactor and cocondensed with ethanol, 2-propanol and 2-methoxyethanol at 77 K. The colloids were characterized by transmission electron microscopy (TEM), ultraviolet spectroscopy (UV-VIS), EDX and electrophoresis. The stability at room temperature was also measured. The higher stability dispersion (> 40 days) was Co-Ni/ ethanol, Co-Ni/ 2-methoxyethanol and Co-Ni/ 2-propanol (< 10 days). The electrophoresis showed that particles are positively charged for the alcohols (62 mV for ethanol and 1.4x10-3 mV for 2-propanol) and 9.64 mV negatively charged for 2-methoxyethanol. The particles size of the bimetal colloids ranges from 5.7 to 9.8 nm. The active solids were obtained by solvent evaporation from the colloids dispersion. The microanalysis showed the presence of C, H between 5 to 13% which is indicative that the solvent is incorporated in the solid. The thermogravimetric analysis (TGA) reveals the thermal stability of the active solids. The Co-Ni/ ethanol and Co-Ni/ 2-propanol exhibit a weight loss of 20% w/w, while the Co-Ni/ 2- methoxyethanol shows a weight loss of 42% being the less stable solid. The FTIR of the active solids in KBr pellets exhibit the presence of the solvents incorporated in the active solid
author	CÁRDENAS TRIVIÑO,GALO LILLO GARRIDO,VIVIANA
author_facet	CÁRDENAS TRIVIÑO,GALO LILLO GARRIDO,VIVIANA
author_sort	CÁRDENAS TRIVIÑO,GALO
title	SYNTHESIS AND CHARACTERIZATION OF Co-Ni COLLOIDS PREPARED IN NONAQUEOUS SOLVENTS
title_short	SYNTHESIS AND CHARACTERIZATION OF Co-Ni COLLOIDS PREPARED IN NONAQUEOUS SOLVENTS
title_full	SYNTHESIS AND CHARACTERIZATION OF Co-Ni COLLOIDS PREPARED IN NONAQUEOUS SOLVENTS
title_fullStr	SYNTHESIS AND CHARACTERIZATION OF Co-Ni COLLOIDS PREPARED IN NONAQUEOUS SOLVENTS
title_full_unstemmed	SYNTHESIS AND CHARACTERIZATION OF Co-Ni COLLOIDS PREPARED IN NONAQUEOUS SOLVENTS
title_sort	synthesis and characterization of co-ni colloids prepared in nonaqueous solvents
publisher	Sociedad Chilena de Química
publishDate	2007
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072007000200014
work_keys_str_mv	AT cardenastrivinogalo synthesisandcharacterizationofconicolloidspreparedinnonaqueoussolvents AT lillogarridoviviana synthesisandcharacterizationofconicolloidspreparedinnonaqueoussolvents
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SYNTHESIS AND CHARACTERIZATION OF Co-Ni COLLOIDS PREPARED IN NONAQUEOUS SOLVENTS

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