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Microwave Driven Hydrothermal Synthesis of Iron Oxide Nanopowders

Witold Łojkowski 3Adam M. Presz 3Robert Fedyk 2Tadeusz Chudoba 3

1. Polish Academy of Sciences, High Pressure Research Center (UNIPRESS), Sokolowska 29/37, Warszawa 01-142, Poland
2. Warsaw University of Technology, Faculty of Materials Science and Engineering (InMat), Wołoska 141, Warszawa 02-507, Poland
3. Polish Academy of Sciences, High Pressure Research Center (UNIPRESS), Sokolowska 29/37, Warszawa 01-142, Poland

Abstract


MICROWAVE DRIVEN HYDROTHERMAL SYNTHESIS OF IRON OXIDE NANOPOWDERS, R.
Fedyk a , T. Chudoba b , A. Presz b , W. Lojkowski b ,
A. Harrison c
a Faculty of Materials Sciences, Warsaw University of Technology
b High Pressure Research Center , Polish Academy of Sciences,
Sokolowska 29 / 37, 01-142 Warsaw, Poland
c Department of Chemistry, University of Edinburgh

A novel microwave reactor was used to hydrothermally synthesize
nanopowders of iron oxides under pressures up to 10 MPa and
temperatures of up to 250 o C. At reaction times as short as 5 min it
was possible to synthesize powders with grain size 10 - 100 nm. Proper
selection of the substrates and their concentration permitted to
control to some extend the grain size and phase composition. Pure
hematite, maghemite and magnetite could be obtained.

 

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Related papers

Presentation: poster at E-MRS Fall Meeting 2002, by Robert Fedyk
See On-line Journal of E-MRS Fall Meeting 2002

Submitted: 2003-02-16 17:33
Revised:   2009-06-08 12:55