Abstract
Photocatalytic activity of spinel type complex oxides has been investigated in this study. Alkaline earth ferrites AFe2O4 (A = Ba, Ca, Sr) were synthesized by sol–gel method. Structural characterizations reveal that the synthesized ferrites have orthorhombic crystal structures with different space groups and cell dimensions when they have different alkaline earth metals in their A site. All the synthesized ferrites exhibited their bandgap in the range 2.14–2.19 eV. Their photocatalytic activities were studied using congo red dye under sunlight and xenon lamp radiation. The substitution of Ba, Ca and Sr at A site of these ferrites had varying impact on dye degradation process. Under xenon lamp irradiation, BaFe2O4 exhibited the highest percentage of dye degradation (92% after 75 min). However, CaFe2O4 showed the fastest degradation of the dye (70% within 15 min). In the absence of irradiation, SrFe2O4 showed the highest dye adsorption (44% after 75 min).
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
