SYNTHESIS AND TEM STUDIES OF NICKEL COLLOIDS PREPARED IN NONAQUEOUS SOLVENTS

In this work metallic colloidal dispersions were obtained by simultaneous cocondensation of nickel atoms with organic solvents at 77 K. The atoms were produced by resistive heating and were reacted with 2-propanol, 2-methoxyethanol, 2-ethoxyethanol and acetone to produce colloids. The kinetic stabil...

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Autores principales:	CÁRDENAS,GALO, TELLO,ALEJANDRA, SEGURA,RODRIGO
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2001
Materias:	metal colloids nanostructures vapor deposition absorption band electron microscopy
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0366-16442001000400008
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spelling	oai:scielo:S0366-164420010004000082002-09-05SYNTHESIS AND TEM STUDIES OF NICKEL COLLOIDS PREPARED IN NONAQUEOUS SOLVENTSCÁRDENAS,GALOTELLO,ALEJANDRASEGURA,RODRIGO metal colloids nanostructures vapor deposition absorption band electron microscopy In this work metallic colloidal dispersions were obtained by simultaneous cocondensation of nickel atoms with organic solvents at 77 K. The atoms were produced by resistive heating and were reacted with 2-propanol, 2-methoxyethanol, 2-ethoxyethanol and acetone to produce colloids. The kinetic stability of colloid dispersions was related to the solvation effect of organic molecules, e.g. low stability for ketones and higher stability for 2-propanol colloids. The colloidal particles were characterized by UV-Vis measurements showing an absorption band around 212 nm. The electrophoretic measurements reveal that particles are weakly positively charged. The transmission electron microscopy studies reveal an average particles size distribution ranging from 4 to 23 nm depending on the solvent. Most of the colloids exhibit a spherical shape with some degree of agglomerationinfo:eu-repo/semantics/openAccessSociedad Chilena de QuímicaBoletín de la Sociedad Chilena de Química v.46 n.4 20012001-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0366-16442001000400008en10.4067/S0366-16442001000400008
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	metal colloids nanostructures vapor deposition absorption band electron microscopy
spellingShingle	metal colloids nanostructures vapor deposition absorption band electron microscopy CÁRDENAS,GALO TELLO,ALEJANDRA SEGURA,RODRIGO SYNTHESIS AND TEM STUDIES OF NICKEL COLLOIDS PREPARED IN NONAQUEOUS SOLVENTS
description	In this work metallic colloidal dispersions were obtained by simultaneous cocondensation of nickel atoms with organic solvents at 77 K. The atoms were produced by resistive heating and were reacted with 2-propanol, 2-methoxyethanol, 2-ethoxyethanol and acetone to produce colloids. The kinetic stability of colloid dispersions was related to the solvation effect of organic molecules, e.g. low stability for ketones and higher stability for 2-propanol colloids. The colloidal particles were characterized by UV-Vis measurements showing an absorption band around 212 nm. The electrophoretic measurements reveal that particles are weakly positively charged. The transmission electron microscopy studies reveal an average particles size distribution ranging from 4 to 23 nm depending on the solvent. Most of the colloids exhibit a spherical shape with some degree of agglomeration
author	CÁRDENAS,GALO TELLO,ALEJANDRA SEGURA,RODRIGO
author_facet	CÁRDENAS,GALO TELLO,ALEJANDRA SEGURA,RODRIGO
author_sort	CÁRDENAS,GALO
title	SYNTHESIS AND TEM STUDIES OF NICKEL COLLOIDS PREPARED IN NONAQUEOUS SOLVENTS
title_short	SYNTHESIS AND TEM STUDIES OF NICKEL COLLOIDS PREPARED IN NONAQUEOUS SOLVENTS
title_full	SYNTHESIS AND TEM STUDIES OF NICKEL COLLOIDS PREPARED IN NONAQUEOUS SOLVENTS
title_fullStr	SYNTHESIS AND TEM STUDIES OF NICKEL COLLOIDS PREPARED IN NONAQUEOUS SOLVENTS
title_full_unstemmed	SYNTHESIS AND TEM STUDIES OF NICKEL COLLOIDS PREPARED IN NONAQUEOUS SOLVENTS
title_sort	synthesis and tem studies of nickel colloids prepared in nonaqueous solvents
publisher	Sociedad Chilena de Química
publishDate	2001
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0366-16442001000400008
work_keys_str_mv	AT cardenasgalo synthesisandtemstudiesofnickelcolloidspreparedinnonaqueoussolvents AT telloalejandra synthesisandtemstudiesofnickelcolloidspreparedinnonaqueoussolvents AT segurarodrigo synthesisandtemstudiesofnickelcolloidspreparedinnonaqueoussolvents
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SYNTHESIS AND TEM STUDIES OF NICKEL COLLOIDS PREPARED IN NONAQUEOUS SOLVENTS

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