Synthesis and size control of iron(II) hexacyanochromate(III) nanoparticles and the effect of particle size on linkage isomerism

Matthieu F. Dumont, Olivia N. Risset, Elisabeth S. Knowles, Takashi Yamamoto, Daniel M. Pajerowski, Mark W. Meisel, Daniel R. Talham

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The controlled synthesis of monodisperse nanoparticles of the cubic Prussian blue analogue iron(II) hexacyanochromate(III) is reported along with a kinetic study, using cyanide stretching frequencies, showing the variations of the activation energy (Ea) of the linkage isomerism as a function of the particle size. Highly reproducible, cubic-shaped iron(II) hexacyanochromate(III) nanocrystals, with sizes ranging from 2 to 50 nm, are synthesized using a microemulsion technique, whereas a bulk synthesis yields nonuniform less monodisperse particles with sizes greater than 100 nm. Monitoring the cyanide stretching frequency with FTIR spectroscopy shows that the rate of isomerization is faster for smaller particles. Moreover, a kinetic analysis at different temperatures (255 K ≤ T ≤ 321 K) gives insight into the evolution of Ea with the particle size. Finally, time-dependent powder X-ray diffraction and net magnetization confirm the FTIR observations. The data are interpreted within the concept of a simple two-component model with different activation energies for structures near the surface of the solid and within the bulk.

Original languageEnglish
Pages (from-to)4494-4501
Number of pages8
JournalInorganic Chemistry
Volume52
Issue number8
DOIs
Publication statusPublished - 2013 Apr 15

Fingerprint

Cyanides
linkages
Stretching
Iron
Activation energy
Particle size
Nanoparticles
iron
nanoparticles
Kinetics
Microemulsions
cyanides
synthesis
Isomerization
X ray powder diffraction
Nanocrystals
Magnetization
Spectroscopy
activation energy
Monitoring

ASJC Scopus subject areas

  • Inorganic Chemistry
  • Physical and Theoretical Chemistry

Cite this

Synthesis and size control of iron(II) hexacyanochromate(III) nanoparticles and the effect of particle size on linkage isomerism. / Dumont, Matthieu F.; Risset, Olivia N.; Knowles, Elisabeth S.; Yamamoto, Takashi; Pajerowski, Daniel M.; Meisel, Mark W.; Talham, Daniel R.

In: Inorganic Chemistry, Vol. 52, No. 8, 15.04.2013, p. 4494-4501.

Research output: Contribution to journalArticle

Dumont, Matthieu F. ; Risset, Olivia N. ; Knowles, Elisabeth S. ; Yamamoto, Takashi ; Pajerowski, Daniel M. ; Meisel, Mark W. ; Talham, Daniel R. / Synthesis and size control of iron(II) hexacyanochromate(III) nanoparticles and the effect of particle size on linkage isomerism. In: Inorganic Chemistry. 2013 ; Vol. 52, No. 8. pp. 4494-4501.
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