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

Table 1

Summary of the experimental and calculated data obtained for MFe₂O₄ (M = Ni, Co, and Zn) spinel ferrites.

Spinel ferrite	^a2θ311 (degrees)	^a (nm)	^b (nm)
NiFe2O4	35.68803	30.6	46
CoFe2O4	35.53905	36.7	69
ZnFe2O4	35.27044	34.4	101

^aDiffraction angle (θ₃₁₁) and crystallite size (), data from XRD; ^bparticle size, data from TEM.