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

Dimitrios Gournis, Christina Papachristodoulou, Enrico Maccallini, Petra Rudolf, Michael A. Karakassides, Dimitrios T. Karamanis, Marie-Hélène Sage, Thomas T.M. Palstra, Jean-François Colomer, Konstantinos D. Papavasileiou, Vasilios S. Melissas, Nicolaos H. Gangas

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9 Citations (Scopus)

Abstract

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).
Original languageEnglish
Pages (from-to)393-401
Number of pages9
JournalJournal of colloid and interface science
Volume348
Issue number2
DOIs
Publication statusPublished - 15 Aug 2010
Externally publishedYes

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    Gournis, D., Papachristodoulou, C., Maccallini, E., Rudolf, P., Karakassides, M. A., Karamanis, D. T., ... Gangas, N. H. (2010). A two-dimensional magnetic hybrid material based on intercalation of a cationic Prussian blue analog in montmorillonite nanoclay. Journal of colloid and interface science, 348(2), 393-401. https://doi.org/10.1016/j.jcis.2010.04.068