Preparation of CuFe2O4/SiO2 nanocomposite by the sol-gel method

0029897 - ÚACH 2006 RIV PL eng J - Článek v odborném periodiku
Plocek, Jiří - Hutlová, Alžběta - Nižňanský, Daniel - Buršík, Josef - Rehspringer, J.L. - Mička, Z.
Preparation of CuFe2O4/SiO2 nanocomposite by the sol-gel method.
[Příprava CuFe2O4/SiO2 nanokompozit metodou sol-gel.]
Materials Science-Poland. Roč. 23, č. 3 (2005), s. 697-705. ISSN 0137-1339
Grant CEP: GA MŠMT(CZ) LN00A028; GA AV ČR KJB4032402
Výzkumný záměr: CEZ:AV0Z40320502
Klíčová slova: sol-gel
Kód oboru RIV: CA - Anorganická chemie
Impakt faktor: 0.571, rok: 2005

This work aims at characterizing the phase relations in the CuFe2O4/SiO2 system. Samples were prepared by the sol-gel method. Final heat treatment of the samples was carried out at temperatures in the range of 800-1100 degrees C. Final products were characterized by HR TEM, X-ray diffraction, magnetic measurements, and Mossbauer spectroscopy. HR TEM revealed nanocrystals with sizes of 7-130 nm, depending on the heat treatment temperature. The spinel structure of CuFe2O4 in the amorphous silica matrix proved to be stable up to 1100 degrees C without decomposition to copper silicate and iron (III) oxide. At the same time, the amorphous silica matrix recrystallized to cristobalite at 1100 degrees C.

Příprava CuFe2O4/SiO2 nanokompozit metodou sol-gel.
Trvalý link: http://hdl.handle.net/11104/0119685