Using appropriate salts of nickel, cobalt, or magnesium as templates, Gu et al. presented a twosolvent technique in this study to fabricate onedimensional spinel NiFe2O4, MgFe2O4, and CoFe2O4 nanowires from iron nitrate. Gao, et al. produced magnetic mesoporous spinel NiFe2O4 with a high surface area (up to 301.6 m 2 g -1 ) and a welldefined pore size distribution ranging from 2.5-16.2 nm using a single-phase multi-component precursor. There was no pore-generating template used in the procedure. Acid Orange 7 (AO7) was successfully adsorbed by the mesoporous material, which may also be used as a magnetically separable adsorbent to remove AO7 from wastewater. AO7 adsorbed on the adsorbent can be quickly removed by heat breakdown, and the synthesized mesoporous NiFe2O4 can be easily recycled while maintaining its adsorption property. By annealing Mg(OH)2deposited -FeOOH nanorods, Enlei, Zhang, et al. reported a highly active magnetic MgFe2O4 nanorod catalyst. The breakdown rate of CR solution reached 95% after 2 hours when the Fenton oxidation of CR was catalyzed by the MgFe2O4 nanorods in their asprepared state. After five cycles, the catalytic activity was still quite high. This opens up new possibilities for the efficient treatment of aqueous hazardous dye and the manufacture of a onedimensional magnetic catalyst based on a template technique. Using mesoporous silica SBA-15 as a host matrix, spinel CoFe2O4 nanowires were effectively created by El-Sheikh SM et al. and the precursors were slowly thermally decomposed inside the silica-based template. Yu et al. produced spherical mesoporous nanocrystal clusters of nickel and cobalt ferrite, featuring a large surface area and uniform size distribution. They achieved this using a template-free solvothermal technique in ethylene glycol, followed by heat treatment. Yourdkhani et al. fabricated highly ordered spinel ferrite MxFe3-xO4 (M = Ni, Co, Zn) nanotube arrays using anodic aluminium oxide templates with a pore size of 200 nm. This was achieved by combining a liquid-phase deposition technique with a templateassisted approach. Zhao, B. et al. synthesized spherical La 3+ doped zinc ferrite clusters without the use of a template or surfactant using a simple and effective one-pot solvothermal synthetic method. The clusters as-prepared also performed well when it came to adsorbing contaminants like MO from water.