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Low‐Temperature Preparation and Magnetic Properties of Nanoparticle Iron‐Doped Anatase TiO 2
Author(s) -
Melghit Khaled,
Bouziane Khalid
Publication year - 2007
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2007.01694.x
Subject(s) - anatase , amorphous solid , superparamagnetism , materials science , nanoclusters , nanoparticle , impurity , chemical engineering , doping , inorganic chemistry , titanium , nanotechnology , magnetization , chemistry , catalysis , metallurgy , photocatalysis , crystallography , organic chemistry , physics , optoelectronics , quantum mechanics , magnetic field , engineering
Nanoparticle iron (Fe)‐doped anatase TiO 2 was prepared at a low temperature (100°C) and at room pressure. The product was obtained from a boiling solution of an amorphous TiO 2 gel mixed with an iron nitrate solution and stirred for 5 h. An amorphous TiO 2 gel was obtained from TiCl 3 solution and NH 4 OH as a precipitating agent stirred at room temperature for 1 day. EDAX results on different selected areas of as‐prepared Fe‐doped anatase TiO 2 revealed a homogeneous composition of 17 at.% Fe. Fe–TiO 2 has a superparamagnetic state with a possibility of antiferromagnetism at low temperatures. Fe seems to substitute titanium ions without any evidence of other impurities such as Fe nanoclusters or Fe‐based oxides.