Abstract
Oxidative degradation of pharmaceutical residues in different water resources by visible light photoactive nanocatalysts gains vital attention due to the severe deficiency of clear water. However, the design of an economically efficient photocatalyst remains in the research stage because of various challenges, including wide bandgap energy and fast charge recombination. This study outlines an easy hydrothermal process for creating BaSnO3 nanocrystals modified with varying amounts (4–16% wt) of CoFe2O4. Characterization revealed that the CoFe2O4 addition significantly affected the structural, optical, and photocatalytic characteristics of the prepared materials. The 12.0 wt% CoFe2O4 doping confirms the lowering in the bandgap (Eg) of BaSnO3 from 3.01 to 2.63 eV and an amelioration in the assimilation of visible light. Furthermore, the photocatalysts’ capacity to oxidize ciprofloxacin (CIP) molecules was assessed under visible light. After 90 min of irradiation, the full photooxidation of CIP over the 12 wt% CoFe2O4/BaSnO3 nanocomposite was accomplished at a larger kinetic rate constant (0.0324 min−1) than pure BaSnO3. The CoFe2O4/BaSnO3 heterojunctions displayed great stability and excellent photocatalytic applicability after being utilized five times to oxidize CIP under visible light. Photoluminescence and photocurrent density results confirmed the photocatalytic abilities and mechanism over CoFe2O4/BaSnO3 nanocomposites. Finally, this study illustrates the capability of using the mesoporous CoFe2O4/BaSnO3 nanocomposites in water remediation applications.
Published Version
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