Preparation of nanosize cerium oxide particles in W/O microemulsions

Katalin Nagy, I. Dékány

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Cerium dioxide nanoparticles were synthesized in a toluene/CTABr/Ce(NO3)3/pentanol system using the microemulsion technique and ammonium hydroxide as hydrolyzing agent. Particle size was controlled by varying the molar ratio W = [water]/[surfactant], precursor concentration and surfactant carbon chain length. The molar ratio W was varied between 4 and 20, because model calculations had shown this range to be ideal for the synthesis of particles below 10 nm in size. Based on TEM measurements, particle size was in the range of 2.69-4.06 nm. Precursor ion concentration was varied in the range of 2.2-6.6 wt% (46.0-138 mM). The size of the droplets formed in the microemulsion was determined by dynamic light scattering. Structural studies on CeO2 and particle size determination were carried out by XRD. Thermal analysis of the samples prepared in W/O microemulsions is also presented. The specific surface area of the samples was 53.53-128.65 m2/g and their average pore size as determined by pore size distribution measurements was 1.73-4.91 nm.

Original languageEnglish
Pages (from-to)31-40
Number of pages10
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume345
Issue number1-3
DOIs
Publication statusPublished - Aug 5 2009

Fingerprint

cerium oxides
Microemulsions
Cerium
Particle size
Surface-Active Agents
preparation
Pore size
Oxides
Surface active agents
Ammonium Hydroxide
Pentanols
Size determination
Ammonium hydroxide
Toluene
Dynamic light scattering
Chain length
Specific surface area
Thermoanalysis
surfactants
size determination

Keywords

  • Cerium oxide
  • Porosity
  • Surface properties
  • W/O microemulsion

ASJC Scopus subject areas

  • Colloid and Surface Chemistry

Cite this

Preparation of nanosize cerium oxide particles in W/O microemulsions. / Nagy, Katalin; Dékány, I.

In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 345, No. 1-3, 05.08.2009, p. 31-40.

Research output: Contribution to journalArticle

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