Figure 4: XRD patterns and TGA analysis.

(a) XRD patterns of CoFe₂O₄, CoFe₂O₄/GAs and GO. (b) Raman spectra of GO, CoFe₂O₄/GAs and CoFe₂O₄. (c) Thermogravimetric analysis (TGA) curves of CoFe₂O₄/GAs composites in air from 40–800 °C with a heating rate of 20 °C min⁻¹.