The Influence of Surface Active Substances Various Concentrations on Goethite Nanoparticles Magnetic Properties

A. A. Novakova; A. N. Antonov; Tatiana S. Gendler; E. A. Kolesnikov; I. I. Puzik; V. V. Levina

doi:10.4028/www.scientific.net/SSP.190.447

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HomeSolid State PhenomenaSolid State Phenomena Vol. 190The Influence of Surface Active Substances Various...

The Influence of Surface Active Substances Various Concentrations on Goethite Nanoparticles Magnetic Properties

Abstract:

Goethite nanopowder was prepared in the process of chemical precipitation of iron salt (FCl₃) and alkali (NaOH) with addition of various surface active substances (SAS): cation-active cetylpyridinium chloride (CPC), anion-active sodium dodecyl sulphate (SDS) and complexon EDTA. The concentrations of SAS were 0.3% and 1%. It could be deduced from TEM data that these SASes unambiguously influence sizes of prepared goethite particles, compared with samples, obtained without SAS: in case of adding 1% SDS and EDTA significant crystal growth takes place. To explain this situation the study of magnetic characteristics and phase composition of obtained nanoparticles was carried out using Mossbauer spectroscopy and thermomagnetic analysis (TMA). It was suggested, that different organic Fe³⁺- complexes formed on goethite surface under SAS influence take part in the goethite crystallization process.

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Periodical:

Solid State Phenomena (Volume 190)

Pages:

447-450

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.190.447

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Online since:

June 2012

Authors:

A. A. Novakova, A. N. Antonov, Tatiana S. Gendler, E. A. Kolesnikov, I. I. Puzik, V. V. Levina

Keywords:

Magnetic Property, Mössbauer Spectroscopy, Superparamagnetism, Surfactant, Transmission Electron Microscopy (TEM), α-FeOOH Nanoparticles

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