Enhanced visible-light photocatalytic activity and recyclability of magnetic core-shell Fe3O4@SiO2@BiFeO3–sepiolite microspheres for organic pollutants degradation

Magnetic polymeric ferric magnesium chloride: Fe species distribution, characterization and coagulation removal of microplastics in water

“…32,45 The peak at 580 cm −1 , corresponding to Fe 3 O 4 , represents the vibration of the Fe–O bond. 46,47 These results indicate a linkage between iron and magnesium via –OH or –O–, confirming that MPFMC is a composite coagulant of iron and magnesium. As shown in Fig.…”

Melamine phosphate-modified magnetic chitosan: a novel biocompatible catalyst for the synthesis of biological tetrahydrodipyrazolopyridine and pyrazolopyranopyrimidine derivatives

“…Moving to Curve “b”, the presence of peaks for Fe-O in the range of 500–600 cm −1 , C-H at 2,910 cm −1 , and O-H at 3,442 cm −1 provide compelling evidence confirming the unique structure of magnetic chitosan. Notably, a discernible intensity declines and shift of the O-Fe-O peak compared to free Fe 3 O 4 signify the interaction of the nanoparticles with active groups within the shell ( Su et al, 2021 ). As we delve into Curve “c”, the emergence of an absorption band related to the C-Cl bond at 803 cm −1 solely within this spectrum, followed by its disappearance in the subsequent step, underscores critical changes.…”

“…Moving to Curve "b", the presence of peaks for Fe-O in the range of 500-600 cm −1 , C-H at 2,910 cm −1 , and O-H at 3,442 cm −1 provide compelling evidence confirming the unique structure of magnetic chitosan. Notably, a discernible intensity declines and shift of the O-Fe-O peak compared to free Fe 3 O 4 signify the interaction of the nanoparticles with active groups within the shell (Su et al, 2021). As we delve into Curve "c", the emergence of an absorption band The FT-IR spectroscopy of Iron oxide nanoparticles (Fe 3 O 4 ) (A), magnetic chitosan (Fe 3 O 4 @Cs) (B), magnetic chitosan containing linker (C), and melamine phosphate grafted magnetic chitosan (Fe 3 O 4 @Cs-MP) (D), and melamine phosphate (MP) (E).…”

Synthesis of cerium oxide embedded perovskite type bismuth ferrite nanocomposites for sonophotocatalysis of aqueous micropollutant ibuprofen

“…It is a highly efficient method to isolate the solid catalyst from the solution phase which ensures the continuous and automatic control of wastewater treatment operations. 53 Fig. 8b represents the stability of synthesized photocatalyst over three consecutive cycles of ibuprofen photocatalytic treatment, demonstrating the reusability of the catalyst in the following reactions aer simple separation with the magnet.…”