Study of ternary nano-structured ferrite Mn_(0.6)Co_(0.2)Ni_(0.2)Fe_2O_4 for its magnetic and chemical dye degradation properties

摘要

The present paper reports the magnetic and chemical dye degradation properties of nano-structured mixed spinel ferrite Mn_(0.6)Co_(0.2)Ni_(0.2)Fe_2O_4 prepared by citrate-gel auto-combustion technique which is faster and easier compared to other wet-chemical and conventional ceramic methods. The composition was synthesized at much lower temperature (180°C-200°C) compared to the ceramic technique. The X-ray diffraction pattern of the synthesized powder confirmed formation of single phase fcc spinel structure. The presence of nano sized crystallites is ascertained by TEM analysis. The magnetic behavior of the ternary ferrite was studied by M-H Loop at room temperature and thermal variation of low field ac susceptibility. The UV-Vis spectra were recorded by using methylene blue (MB) dye to study dye degradation. It was found that the MB dye exhibit fast degradation for initial few minutes which is a remarkable property of nano-structured ferrite of dye adsorption.