Factors controlling pure-phase magnetic BiFeO3 powders synthesized by solution combustion synthesis

摘要: Abstract Bismuth ferric oxide nanopowders were prepared through combustion method. Pure phase and well-crystallized BiFeO 3 can be obtained by controlling the process, fuel type fuel-to-oxidant ratio. The evolutions of constitution structural characteristics as-resulted investigated X-ray diffraction, scanning electron microscope, simultaneous thermogravimetric analysis. results revealed that both amount have to carefully considered because they play an important role in total reaction characteristics. Among all tested fuels, l -α-alanine glycine are suitable fuels for synthesis. For α-alanine, optimal ratio is 0.22, which a flame temperature formation. Still, too little would result only amorphous powders due low much lead transformation impurities high involved. resulting exhibited strong H 2 O -activiting ability weak magnetism. When used as heterogeneous Fenton-like catalyst degrade rhodamine B (RhB), apparent rate constant RhB degradation presence at pH 5.0 was evaluated 0.048 min −1 .