Study of Grain Size Distribution in Nanocrystalline Iron Oxides Synthesized by Hydrothermal Method (original) (raw)

A novel microwave reactor was used to hydrothermally synthesize nanopowders of iron oxides under a pressure of up to 10 MPa and temperatures of up to 250 0 C. At reactions time as short as 5 minutes it was possible to synthesize powders with grain size in the range 10-100 nm. Proper selections of the substrates and their concentration enabled the grain size and phase composition to be controlled to some extent. Pure hematite, maghemite and magnetite were obtained. The grain size and distribution were determined by image analysis of the powders. All rights reserved. No part of contents of this paper may be reproduced or transmitted in any form or by any means without the written permission of TTP, www.ttp.net. (ID: 134.148.29.