Synthesis and stabilization of Prussian blue nanoparticles and application for sensors

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

Prussian blue (PB) nanoparticles were synthesized by two methods from FeCl2 and K3Fe(CN)6 and from FeCl3 and K3Fe(CN)6 based on the method published by Fiorito et al., and stabilized by different polymers like polyvinyl alcohol (PVA), polyvinyl pyrrolidone (PVP), polyallylamine hydrochloride (PAH), polydiallyl-dimethyldiammonium chloride (PDDA) and polystyrene sulfonate (PSS). The effect of the monomer/Fe3+ ratio was studied regarding the average particle size and ζ-potential. The forming PB structure was checked by X-ray diffraction. The stabilization was successful for every applied polymer, but the average particle size significantly differs. Particle size distributions were determined by Malvern type nanosizer equipment and by transmission electron microscope (TEM) and zeta potential values were determined for the obtained stabile samples. The results revealed that by using FeCl2 and K3Fe(CN)6 for PB preparation particles with narrow size distribution and average diameter of 1.7 nm occurred but stabilization was necessary. By the other method the dispersion was stabile with 182 nm particles but the particle size exponentially decreased to 18 nm with increasing PVP concentration. Ultrathin nanofilms were prepared on glass support by the alternating layer-by-layer (LbL) method from PB particles and PAH. The morphology of the prepared films was investigated also by AFM. The films were immobilized on interdigitated microsensor electrodes (IME) and tested in sensing hydrogen peroxide and different acids like acetic acid, hydrochloric acid vapors.

Original languageEnglish
Pages (from-to)176-182
Number of pages7
JournalJournal of Colloid and Interface Science
Volume309
Issue number1
DOIs
Publication statusPublished - May 1 2007

Fingerprint

Stabilization
stabilization
Particle size
Nanoparticles
Polyvinyls
Pyrrolidinones
nanoparticles
sensors
Sensors
synthesis
Microsensors
Polymers
Polyvinyl alcohols
hydrochlorides
Zeta potential
Hydrochloric acid
Polyvinyl Alcohol
Acetic acid
Hydrogen peroxide
Particle size analysis

Keywords

  • Nanoparticles
  • Prussian blue
  • Sensors
  • Stabilization by polymers

ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry
  • Surfaces and Interfaces

Cite this

Synthesis and stabilization of Prussian blue nanoparticles and application for sensors. / Hornok, V.; Dékány, I.

In: Journal of Colloid and Interface Science, Vol. 309, No. 1, 01.05.2007, p. 176-182.

Research output: Contribution to journalArticle

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