TY - JOUR
T1 - A two-dimensional magnetic hybrid material based on intercalation of a cationic Prussian blue analog in montmorillonite nanoclay
AU - Gournis, D.
AU - Papachristodoulou, C.
AU - Maccallini, E.
AU - Rudolf, P.
AU - Karakassides, M.A.
AU - Karamanis, D.T.
AU - Sage, M.-H.
AU - Palstra, T.T.M.
AU - Colomer, J.-F.
AU - Papavasileiou, K.D.
AU - Melissas, V.S.
AU - Gangas, N.H.
PY - 2010/8/1
Y1 - 2010/8/1
N2 - 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).
AB - 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).
UR - http://www.scopus.com/inward/record.url?scp=77953914296&partnerID=8YFLogxK
U2 - 10.1016/j.jcis.2010.04.068
DO - 10.1016/j.jcis.2010.04.068
M3 - Article
AN - SCOPUS:77953914296
VL - 348
SP - 393
EP - 401
JO - Jounal of Colloid and Interface Science
JF - Jounal of Colloid and Interface Science
IS - 2
ER -