Table 4.

The comparison of our study with some remarkable researches in the literature.

	Preparation Method	Obtained material	Remarkable results
He et al.18	Homogenous precipitation	Core-shell Fe3O4-TiO2	• Obtained Fe3O4-TiO2 is non-toxic • Fe3+ could be doped into TiO2 and activate the photocatalytic activation under visible light activation
Sun et al.19	One-step calcination	Magnetic Fe3O4-TiO2	• The degradation of organic dye by Fe3O4-TiO2 (Fe/TiO2 ratio: 1/200) was enhanced compared to single Fe3O4 and TiO2 • The synergistic of Fe3O4 and TiO2 could be attributed to the high photocatalytic activity
Zheng et al.12	Liquid phase deposition	Waxberry-like microsphere Fe3O4-TiO2	• Diameter: ~500 nm • Shell thickness: ~10–20 nm • Remove 40% of MB (10 ppm) after 60 mins under Xenon lamp (300 W) • Could be recycled after photocatalytic reaction
Stefan et al.13	Ultrasound assisted sol-gel	Fe3O4-TiO2: Eu nanocomposite	• Increase of Eu doping decrease the formation of FeTiO3 • Large surface area and mesoporous strcuture • Remove 85% of RhB (1.0 × 10−5 mol/L) dye after 3 h unter visible light irradiation (400 W halogen lamp)
Alzahani53	Sol-gel	Core shell Fe3O4/SiO2/TiO2	• Under UV light, the photocatalytic performance was higher than commercial TiO2
This study	Sol-gel	MgAC-Fe3O4/TiO2	• The synergistic of Fe3O4 and TiO2 could be attributed to the performances of MgAC-Fe3O4/TiO2 • Core-shell structure with Fe3O4 as core and TiO2 at outer layer is suggested. • However, the photocatalytic under visible light should be activated in the near future