A two-dimensional magnetic hybrid material based on intercalation of a cationic Prussian blue analog in montmorillonite nanoclay

Intercalation of a new cationic ferric ferrocyanide in the interlayer space of a cation-adsorbing nanoclay enabled the synthesis of a highly ordered two-dimensional hybrid magnetic material. A highly ordered two-dimensional hybrid magnetic nanocomposite has been prepared by synthesizing and intercal...

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Bibliographic Details
Published in:Journal of colloid and interface science 2010-08, Vol.348 (2), p.393-401
Main Authors: Gournis, Dimitrios, Papachristodoulou, Christina, Maccallini, Enrico, Rudolf, Petra, Karakassides, Michael A., Karamanis, Dimitrios T., Sage, Marie-Hélène, Palstra, Thomas T.M., Colomer, Jean-François, Papavasileiou, Konstantinos D., Melissas, Vasilios S., Gangas, Nicolaos H.
Format: Article
Language:English
Subjects:
Arrays
Cationic
Cationic complex
Cations
Chemistry
Clay intercalation
Exact sciences and technology
Ferric ferrocyanide
General and physical chemistry
Montmorillonite
Nanocomposites
Nanomaterials
Nanostructure
Prussian blue
Two dimensional
Two-dimensional hybrid materials
X-rays
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Summary:Intercalation of a new cationic ferric ferrocyanide in the interlayer space of a cation-adsorbing nanoclay enabled the synthesis of a highly ordered two-dimensional hybrid magnetic material. A highly ordered two-dimensional hybrid magnetic nanocomposite has been prepared by synthesizing and intercalating a new cationic aluminum-hydroxy ferric ferrocyanide compound into a cation-adsorbing nanoclay (montmorillonite). Chemical and structural properties were investigated by X-ray diffraction, transmission electron microscopy, thermogravimetric and differential thermal analyses, Fourier transform infrared, X-ray photoemission, and Mössbauer spectroscopies. Elemental analysis was based on proton-induced gamma ray emission and X-ray fluorescence spectroscopy data, N/C elemental ratios, and cation-exchange capacity measurements. Magnetic properties were studied by SQUID magnetometry. The results suggest: (i) that the cationic Prussian blue analog comprises Al-hydroxy cations embedded into a monolayer thick two-dimensional ferric ferrocyanide array; and (ii) that the clay-Prussian blue nanohybrid consists of such arrays stacked between the clay layers. The latter material orders ferromagnetically at ∼5 K showing a hundred times higher remanence than that of the starting material, soluble Prussian blue (ammonium ferric ferrocyanide).
ISSN:0021-9797
1095-7103
DOI:10.1016/j.jcis.2010.04.068