Preparation and characterization of recyclable Fe₃O₄@SiO₂@TiO₂ composite photocatalyst, and investigation of the photocatalytic activity

The photocatalytic performance and mechanism of magnetically retrievable Z-scheme Cr2O3–Fe3O4/C hetero-nanostructure polyhedra

“…84-0313) was obtained in the composite of Cr 2 O 3 –Fe 3 O 4 /C. Moreover, the XRD data followed Debye–Scherrer's formula 43 ( D = K · λ /( β cos( θ ))), where K = Scherrer's constant (0.89), λ = the wavelength of X-ray of Cu Ka radiation, β = the full width of half maximum of a diffraction peak, and θ = diffraction angle of catalysts. The calculated average particle sizes of Fe 3 O 4 /C and Cr 2 O 3 –Fe 3 O 4 /C-7 composites were 220 nm and 101 nm, respectively.…”

APTMS-BCAD modified magnetic iron oxide for magnetic solid-phase extraction of Cu(II) from aqueous solutions

“…Fe 3 O 4 nanoparticles had sizes ranging from 6 to 18 nm, with an average diameter of 9 nm, in accordance with the particle size distribution analysis result in Figure 3 a (inner picture). As seen in the Fe 3 O 4 @SiO 2 TEM image ( Figure 3 b), which is formed after the surface of Fe 3 O 4 nanoparticles is coated with silica (SiO 2 ), it is seen that the surface of Fe 3 O 4 nanoparticles is covered with a thin flat layer (amorphous structure of SiO 2 ) [ 52 ]. The main goal of forming the outer silica shell is to prevent Fe 3 O 4 particles from corroding.…”

Fe2.5Co0.3Zn0.2O4/CuCr-LDH as a visible-light-responsive photocatalyst for the degradation of caffeine, bisphenol A, and simazine in pure water and real wastewater under photo-Fenton-like degradation process

“…Fig. 4 shows that the appraised value for the magnetization saturation (Ms) of Fe2.5Co0.3Zn0.2O4/CuCr-LDH composite was 56.14 emu g -1 , indicating that the so-synthesized nanomaterial is a ferromagnetic phase (Kiziltaş et al, 2020). Hence, this magnetic behavior allowed the composite to be separated from the reaction media by applying an external magnetic field (inserted photo in Fig.…”