Nanosized Spinel Ferrites Synthesized by Sol-Gel Autocombustion for Optimized Removal of Azo Dye from Aqueous Solution

<div>TEM micrographs of MFe<sub>2</sub>O<sub>4</sub> (M = Ni, Co, and Zn) spinel ferrites (a, b, and c) and images (d, e) of magnetic separation of CoFe<sub>2</sub>O<sub>4</sub> spinel ferrite from the aqueous solution with a permanent magnet: (d) before separation and (e) after magnetic separation.</div>

Journal of Nanomaterials

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Figure 3: Nanosized Spinel Ferrites Synthesized by Sol-Gel Autocombustion for Optimized Removal of Azo Dye from Aqueous Solution 