Synthesis of sulphur doped CoFe2O4 by calcination process in air and their photocatalytic activity in the presence of visible light

S-CoFe2O4 nanocomposite was synthesized using an easy calcining procedure in the air and was then given a variety of analytical techniques to analyze it. PXRD analysis supported cubic S-CoFe2O4 structure. CoFe2O4 and S-CoFe2O4 catalysts have been continuously absorbed in the visible region, which suggests active d-d transitions. Methylene blue degradation was used to investigate the photocatalytic activity of CoFe2O4 and S-CoFe2O4 catalysts under visible light illumination. The point zero charge of S-CoFe2O4 catalyst was found to be at pH 4.4 confirmed from the zeta potential. Ammonium persulfate was deployed as an oxidant to compare to hydrogen peroxide. Moreover, the S-CoFe2O4 composite performance was investigated in the presence of a trapping agent such isopropyl alcohol. The decreasing order of photocatalytic activity is as follows: S-CoFe2O4 + H2O2 > S-CoFe2O4 + APS > S-CoFe2O4 > CoFe2O4 > S-CoFe2O4 + IPA. Kinetic study shows S-CoFe2O4 with H2O2 system best fitted to zero order model. The degradation of methylene blue was examined using the liquid chromatography mass spectroscopy technique.