Ore than one particular to WOoverlapO (JCPDS No.: 84-1851). In well-defined products. There corresponding lattice three .5H2 within the polyhedron, addition, the apparent lattice spacing in to HRTEM image further confirms that the with a lattice spacing of 0.297 nm correspondingthe WO3.5H2O (JCPDS No.: 84-1851). In sampleMolecules 2021, 26, 6857 Molecules 2021, 26,7 of 15 7 ofaddition, the apparent lattice spacing in the HRTEM image additional confirms that the samcomprises two phases of -Fe -Fe2O3 and to form a hybrid structure, along with the morphology ple comprises two phases of 2 O3 and WO3WO3 to kind a hybrid structure, and also the morhas no substantial alter alter immediately after composition. phology has no significantafter composition.Figure 3. (a) SEM Figure three. (a) SEM image of Fe3 O4;; (b) TEM image of -Fe22O3 /WO33 .5HO; (c) HRTEM image of a Fe3 four image of -Fe O3/WO.5H2 2 O; (c) HRTEM image of a single particle of -Fe O3 3 /WO3 .5H2 single particle of -Fe22 O/WO3.5H2O. O.three.2. Magnetism Measurement 3.two. Magnetism Measurement Figure four shows the hysteresis loops of -Fe2 O /WO .5H2 O at 300 K using the applied 3 .5H2O at 300 K with the applied Figure four shows the hysteresis loops of -Fe2O3 /WO33 field T. The saturation magnetization in the heterostructure increases together with the field and field 2T. The saturation magnetization of the heterostructure increases using the field and tends to slow until 000 Oe. From the enlarged part of the illustration, we are able to see that the tends to slow until 2000 Oe. From the enlarged component on the illustration, we are able to see that solution is ferromagnetic having a residual magnetization (Mr) of two.three emu/g in addition to a coercivity the product is ferromagnetic with a residual magnetization (Mr) of 2.three emu/g in addition to a coer(Hc) of 61.2 Oe [59]. The saturation magnetization (Ms) of 20 emu/g is less than that from the civity (Hc) of 61.two Oe [59]. The saturation magnetization (Ms) of 20 emu/g is less than that bulk -Fe2 O3 of 73.5 emu/g [60]. That is mainly due to the surface of your hybrid structure in the bulk -Fe2O3 of 73.five emu/g [60]. This can be primarily as a result of surface in the hybrid being covered with hydrated tungsten oxide, which affects the morphology and the spin structure being covered with hydrated tungsten oxide, which affects the morphology and density, which in turn impacts the saturation magnetization. the spin density, which in turn impacts the saturation magnetization. three.three. Photocatalytic Activity Both WO3 and -Fe2 O3 are typical n-type semiconductors, and the n-n-type heterostructure has absorption inside the ultraviolet area and visible area [61]. UV-Visible spectrum evaluation was employed to discover the light response. As shown in Figure 5a, compared with Fe3 O4 , the complicated can absorb light in a larger wavelength variety. The adsorption band is at 300 to 600 nm, which can absorb ultraviolet and visible light. The light density in the xenon lamp and solar light density is 120 mW/cm2 and 54 mW/cm2 , respectively; consequently, the 500 W xenon lamp was applied as the light source within this experiment [62]. The band gap of -Fe2 O3 /WO3 .5H2 O may be obtained in the plot of (h)2 versus h by extrapolating the strait C2 Ceramide Description portion of (h)2 to zero, as shown in Figure 5b. Just after Rhod-2 AM Epigenetic Reader Domain calculation,Molecules 2021, 26,8 ofMolecules 2021, 26,the worth was determined to become 1.eight eV, which can be narrower than 2.64 eV of Fe3 O4 . A narrow eight of 15 band gap is advantageous for the efficient utilization of visible light for photocatalysis [63].4Magnetization (emg/g)-2 -4 -200 -100 0 100–20 -20,000 -10,000 0.
