10.1016/j.jmmm.2012.11.056
Hydrothermal synthesis of pure BaFe12O19 hexaferrite nanoplatelets under high alkaline system

BaCl2 2H2O and FeCl3 6H2O are used as initial materials. In a typical experiment, 0.487 g of FeCl3 6H2O and 0.054 g of BaCl2 2H2O (Fe/Ba mole ratio: N=8) were dissolved in 21 mL of distilled water. Then, 4.0 g of KOH was added to the solution with continuous stirring. Finally, the solution was put into a 30 mL of Teflon-lined stainless-steel autoclave and kept it in an oven at 220 degC for 24 h, followed by furnace cooling to room temperature. The as-prepared ultrafine particles were collected by a magnet and then washed with distilled water, alcohol and 10% acetic acid for several times.
FeCl3 6H2O
dissolved
0.487 g
g
BaCl2 2H2O
dissolved
0.054 g
g
Fe/Ba
mole ratio
8
distilled water
21 mL
mL
KOH
added
4.0 g
g
Teflon-lined stainless-steel autoclave
30 mL
mL
solution
kept it in an oven
220 degC
degC
solution
kept it in an oven
24 h
h
acetic acid
10%
%