One-pot hydrothermal synthesis of a carbon quantum dot/CaFe₂O₄ hybrid nanocomposite for carcinogenic Congo red dye degradation

Abstract

A novel CaFe2O4/CQDs 90% degradation of carcinogenic Congo red dye observed. Modification of CaFe2O4 with CQDs narrowed its bandgap.

Enhancing acid orange II degradation in ozonation processes with CaFe2O4 nanoparticles as a heterogeneous catalyst

“…The FTIR spectrum of CaFe 2 O 4 nanoparticles exhibits various absorption peaks corresponding to distinct vibrational modes of the chemical bonds inherent in the nanoparticles. 28 A broad absorption peak is evident within the 3402 to 3851 cm −1 range, indicative of the O–H stretching mode. 29 Peaks at 1081 and 1635 cm −1 signify the elongation of C–O bonds.…”

“…31 Moreover, peaks at 856 and 896 cm −1 emerge from bending Fe-O-H bonds, while peaks at 714 and 759 cm −1 arise from the elongation of Fe-O bonds. 28 The effect of solution pH on AOII degradation…”