Published July 2014 | Version v1
Journal article Metadata-only

Synthesis of CeO2: sol-gel properties and characterization of the obtained nanoparticles

Creators

  • 1. Universidad de Costa Rica, Escuela de Ingenieria Electrica (Costa Rica)
  • 2. Centro Nacional de Alta Tecnologia, Laboratorio Nacional de Nanotecnologia (Costa Rica)
  • 3. Laboratorio Nacional de Nanotecnologia (Costa Rica)

Description

An efficient sol-gel synthesis of a nanoparticle cerium oxide (IV) method was proposed. The presence of nanoparticles was confirmed by AFM micrographs. The absence of impurities was validated by Thermogravimetric (TGA), Fourier-transform infrared spectroscopy (FTIR) and X-Ray diffraction (XRD) measurements. A particle size of 11 nm was revealed by Scherrer's law, whereas dynamic light scattering (DLS) analysis was showed an average diameter of 9.55 nm. Viscosity and concentration were behave proportionally. Contact angle measurements was showed that is more feasible to coat silicon (110) substrate than pure aluminum. A filter for ultraviolet radiation was obtained when particle concentrations are larger than 13.74 mg/cm3

Availability note (English)

Available from Biblioteca Luis Demetrio Tinoco, Universidad de Costa Rica; Also available on-line: https://revistas.tec.ac.cr/index.php/tec_marcha/article/view/2067/1873; https://doi.org/10.18845/tm.v27i3.2067

Abstract (Spanish)

Un metodo sol-gel eficiente fue propuesto para la sintesis de oxido de cerio (IV) nanoparticulado y fue comprobado con imagenes de microscopia de fuerza atomica (AFM). Los analisis por termogravimetrico (TGA), espectroscopia infrarroja con transformada de Fourier (FT-IR) y difraccion de rayos X (XRD) han validado la ausencia de impurezas. El tamano promedio de 11 nm del cristalito fue revelado por la ley de Scherrer, mientras que un diametro promedio de 9,55 nm fue mostrado por dispersion dinamica de la luz (DLS). La viscosidad y concentracion de las nanoparticulas fueron directamente proporcionales. Las mediciones de los angulos de contacto han mostrado que es mas factible recubrir el sustrato de silicio (110) que el aluminio puro. Un filtro para la radiacion ultravioleta fue obtenido cuando las concentraciones de particulas son mayores de 13,74 mg/cm3

Additional details

Additional titles

Original title (Spanish)
Sintesis de CeO2: propiedades del sol-gel y caracterizacion de las nanoparticulas obtenidas

Identifiers

URL
https://revistas.tec.ac.cr/index.php/tec_marcha/article/view/2067/1873;
DOI
10.18845/tm.v27i3.2067;

Publishing Information

Journal Title
Tecnologia en Marcha
Journal Volume
27
Journal Issue
3
Journal Page Range
p. 62-69
ISSN
0379-3982

INIS

Country of Publication
Costa Rica
Country of Input or Organization
Costa Rica
INIS RN
50033152
Subject category
S77: NANOSCIENCE AND NANOTECHNOLOGY;
Descriptors DEI
CERIUM OXIDES; FOURIER TRANSFORM SPECTROMETERS; LIGHT SCATTERING; NANOPARTICLES; SOL-GEL PROCESS; THERMAL GRAVIMETRIC ANALYSIS; ULTRAVIOLET RADIATION; VISCOSITY; X-RAY DIFFRACTION
Descriptors DEC
CERIUM COMPOUNDS; CHALCOGENIDES; CHEMICAL ANALYSIS; COHERENT SCATTERING; DIFFRACTION; ELECTROMAGNETIC RADIATION; GRAVIMETRIC ANALYSIS; MEASURING INSTRUMENTS; OXIDES; OXYGEN COMPOUNDS; PARTICLES; QUANTITATIVE CHEMICAL ANALYSIS; RADIATIONS; RARE EARTH COMPOUNDS; SCATTERING; SPECTROMETERS; THERMAL ANALYSIS

Optional Information

Notes
Figs., tabs., refs.