Synthesis and properties of NiSn colloids using different metal ratios by CLD

Galo Cárdenas, Yasna León, Yanko Moreno, Octavio Peña

Resultado de la investigación: Article

10 Citas (Scopus)

Resumen

Bimetallic colloidal dispersions of Ni-Sn were prepared by simultaneous co-condensation with organic solvents at 77 K using the chemical liquid deposition (CLD) method. The atoms in a 1:1, 2:1, 3:1, 1:2 and 1:3 ratios were produced by resistive heating and were reacted with 2-propanol, 2-methoxyethanol, ethanol and acetone to produce colloids. The bimetallic films and solids were obtained by evaporation under vacuum at room temperature. The colloids and solids were characterized by several studies, including the stability at room temperature, electrophoresis, ultraviolet-visible spectrophotometry, transmission electron microscopy (TEM), electron diffraction, conductivity, nergy dispersive X-ray analysis, electrophoretic measurements, thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS) and magnetic properties. TEM studies show a size distribution between 6 and 14 nm, depending of the solvent and Ni:Sn ratio. We can observe a high stability for the colloidal dispersion with different solvents (>2 weeks); this is due mainly to the solvation capacity and polarity of the organic molecules. Electrophoretic measurements revealed that the particles are weakly positively charged with a greater Ni percentage. Electron diffraction analysis for the metallic colloids shows the presence of bimetallic compounds as NiSn, Ni3Sn, Ni3Sn4 and tin oxides. XPS analysis was used for the study of the Ni-Sn solid composition, where it was determined that the Ni atoms could be as Ni0 and Ni2+. The bond energy difference in both species were 0.8 eV; on the other side, Sn atoms showed two peaks, the first associated with Sn0 atoms and the second attributed to oxidized species like SnOx. The conductivity studies showed that when the metal is changed, the electric conductivity properties change too and are associated with the particle size increasing.

Idioma originalEnglish
Páginas (desde-hasta)644-653
Número de páginas10
PublicaciónColloid and Polymer Science
Volumen284
N.º6
DOI
EstadoPublished - 1 mar 2006

Huella dactilar

Colloids
colloids
Metals
Atoms
Liquids
synthesis
liquids
Electron diffraction
metals
conductivity
atoms
oxides
X ray photoelectron spectroscopy
electron diffraction
photoelectron spectroscopy
Transmission electron microscopy
transmission electron microscopy
x rays
2-Propanol
Solvation

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Colloid and Surface Chemistry
  • Materials Chemistry

Citar esto

Cárdenas, Galo ; León, Yasna ; Moreno, Yanko ; Peña, Octavio. / Synthesis and properties of NiSn colloids using different metal ratios by CLD. En: Colloid and Polymer Science. 2006 ; Vol. 284, N.º 6. pp. 644-653.
@article{417a61f3974447f3bf254f0dec91e147,
title = "Synthesis and properties of NiSn colloids using different metal ratios by CLD",
abstract = "Bimetallic colloidal dispersions of Ni-Sn were prepared by simultaneous co-condensation with organic solvents at 77 K using the chemical liquid deposition (CLD) method. The atoms in a 1:1, 2:1, 3:1, 1:2 and 1:3 ratios were produced by resistive heating and were reacted with 2-propanol, 2-methoxyethanol, ethanol and acetone to produce colloids. The bimetallic films and solids were obtained by evaporation under vacuum at room temperature. The colloids and solids were characterized by several studies, including the stability at room temperature, electrophoresis, ultraviolet-visible spectrophotometry, transmission electron microscopy (TEM), electron diffraction, conductivity, nergy dispersive X-ray analysis, electrophoretic measurements, thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS) and magnetic properties. TEM studies show a size distribution between 6 and 14 nm, depending of the solvent and Ni:Sn ratio. We can observe a high stability for the colloidal dispersion with different solvents (>2 weeks); this is due mainly to the solvation capacity and polarity of the organic molecules. Electrophoretic measurements revealed that the particles are weakly positively charged with a greater Ni percentage. Electron diffraction analysis for the metallic colloids shows the presence of bimetallic compounds as NiSn, Ni3Sn, Ni3Sn4 and tin oxides. XPS analysis was used for the study of the Ni-Sn solid composition, where it was determined that the Ni atoms could be as Ni0 and Ni2+. The bond energy difference in both species were 0.8 eV; on the other side, Sn atoms showed two peaks, the first associated with Sn0 atoms and the second attributed to oxidized species like SnOx. The conductivity studies showed that when the metal is changed, the electric conductivity properties change too and are associated with the particle size increasing.",
keywords = "Bimetallic colloids, Chemical liquid deposition, Nanostructure, Semiconductors",
author = "Galo C{\'a}rdenas and Yasna Le{\'o}n and Yanko Moreno and Octavio Pe{\~n}a",
year = "2006",
month = "3",
day = "1",
doi = "10.1007/s00396-005-1429-8",
language = "English",
volume = "284",
pages = "644--653",
journal = "Colloid and Polymer Science",
issn = "0303-402X",
publisher = "Springer Verlag",
number = "6",

}

Synthesis and properties of NiSn colloids using different metal ratios by CLD. / Cárdenas, Galo; León, Yasna; Moreno, Yanko; Peña, Octavio.

En: Colloid and Polymer Science, Vol. 284, N.º 6, 01.03.2006, p. 644-653.

Resultado de la investigación: Article

TY - JOUR

T1 - Synthesis and properties of NiSn colloids using different metal ratios by CLD

AU - Cárdenas, Galo

AU - León, Yasna

AU - Moreno, Yanko

AU - Peña, Octavio

PY - 2006/3/1

Y1 - 2006/3/1

N2 - Bimetallic colloidal dispersions of Ni-Sn were prepared by simultaneous co-condensation with organic solvents at 77 K using the chemical liquid deposition (CLD) method. The atoms in a 1:1, 2:1, 3:1, 1:2 and 1:3 ratios were produced by resistive heating and were reacted with 2-propanol, 2-methoxyethanol, ethanol and acetone to produce colloids. The bimetallic films and solids were obtained by evaporation under vacuum at room temperature. The colloids and solids were characterized by several studies, including the stability at room temperature, electrophoresis, ultraviolet-visible spectrophotometry, transmission electron microscopy (TEM), electron diffraction, conductivity, nergy dispersive X-ray analysis, electrophoretic measurements, thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS) and magnetic properties. TEM studies show a size distribution between 6 and 14 nm, depending of the solvent and Ni:Sn ratio. We can observe a high stability for the colloidal dispersion with different solvents (>2 weeks); this is due mainly to the solvation capacity and polarity of the organic molecules. Electrophoretic measurements revealed that the particles are weakly positively charged with a greater Ni percentage. Electron diffraction analysis for the metallic colloids shows the presence of bimetallic compounds as NiSn, Ni3Sn, Ni3Sn4 and tin oxides. XPS analysis was used for the study of the Ni-Sn solid composition, where it was determined that the Ni atoms could be as Ni0 and Ni2+. The bond energy difference in both species were 0.8 eV; on the other side, Sn atoms showed two peaks, the first associated with Sn0 atoms and the second attributed to oxidized species like SnOx. The conductivity studies showed that when the metal is changed, the electric conductivity properties change too and are associated with the particle size increasing.

AB - Bimetallic colloidal dispersions of Ni-Sn were prepared by simultaneous co-condensation with organic solvents at 77 K using the chemical liquid deposition (CLD) method. The atoms in a 1:1, 2:1, 3:1, 1:2 and 1:3 ratios were produced by resistive heating and were reacted with 2-propanol, 2-methoxyethanol, ethanol and acetone to produce colloids. The bimetallic films and solids were obtained by evaporation under vacuum at room temperature. The colloids and solids were characterized by several studies, including the stability at room temperature, electrophoresis, ultraviolet-visible spectrophotometry, transmission electron microscopy (TEM), electron diffraction, conductivity, nergy dispersive X-ray analysis, electrophoretic measurements, thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS) and magnetic properties. TEM studies show a size distribution between 6 and 14 nm, depending of the solvent and Ni:Sn ratio. We can observe a high stability for the colloidal dispersion with different solvents (>2 weeks); this is due mainly to the solvation capacity and polarity of the organic molecules. Electrophoretic measurements revealed that the particles are weakly positively charged with a greater Ni percentage. Electron diffraction analysis for the metallic colloids shows the presence of bimetallic compounds as NiSn, Ni3Sn, Ni3Sn4 and tin oxides. XPS analysis was used for the study of the Ni-Sn solid composition, where it was determined that the Ni atoms could be as Ni0 and Ni2+. The bond energy difference in both species were 0.8 eV; on the other side, Sn atoms showed two peaks, the first associated with Sn0 atoms and the second attributed to oxidized species like SnOx. The conductivity studies showed that when the metal is changed, the electric conductivity properties change too and are associated with the particle size increasing.

KW - Bimetallic colloids

KW - Chemical liquid deposition

KW - Nanostructure

KW - Semiconductors

UR - http://www.scopus.com/inward/record.url?scp=33646232974&partnerID=8YFLogxK

U2 - 10.1007/s00396-005-1429-8

DO - 10.1007/s00396-005-1429-8

M3 - Article

AN - SCOPUS:33646232974

VL - 284

SP - 644

EP - 653

JO - Colloid and Polymer Science

JF - Colloid and Polymer Science

SN - 0303-402X

IS - 6

ER -