Room temperature synthesis of magnetite (Fe.sub.3−δ./sub.O.sub.4./sub.) nanoparticles by a simple reverse co-precipitation method

0374129 - FZÚ 2012 RIV GB eng J - Článek v odborném periodiku
Mahmed, N. - Heczko, Oleg - Söderberg, O. - Hannula, S.-P.
Room temperature synthesis of magnetite (Fe_3−δO₄) nanoparticles by a simple reverse co-precipitation method.
IOP Conference Series: Materials Science and Engineering. Roč. 18, č. 3 (2011), 032020/1-032020/4. ISSN 1757-8981
Výzkumný záměr: CEZ:AV0Z10100520
Klíčová slova: ferromagnetic nanoparticles * magnetite nanoparticles synthesis * maghemi
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus

Magnetite (Fe3−δO4) nanoparticles with the size less than 30 nm have been synthesized by using a simple reverse co-precipitation method at room temperature. During the process, ferrous sulfate (FeSO4•7H2O) powder was used as an iron precursor, and ammonium hydroxide (NH4OH) as a precipitating agent. The experiment was carried out in ambient atmosphere without any surfactant added. In this method, the base solution for the precipitation process was adjusted to have a pH value suitable for the formation of the magnetite phase. The iron salt precursor was added into the solution during the synthesis by two different synthesis protocols. The phase, morphology and magnetic characteristic of differently synthesized magnetite particles were characterized by using an X-ray diffraction (XRD), transmission electron microscope (TEM) and vibrating sample magnetometer (VSM).
Trvalý link: http://hdl.handle.net/11104/0207121