Synthesis of CoFe₂O₄/Graphene Oxide-Grafted Tetraethylenepentamine for Removal of Cr (VI) from Aqueous Solution

Figure 2

(a) XRD pattern of TGOM; (b) FT-IR spectrum of TGOM; (c) Raman spectrum of TGOM; (d) TGA thermogram of GO, MGO, and TGOM.

(a)

(b)

(c)

(d)