Fig. 4
FE-SEM images of (A) GO, (B) GO-Cys, (C) Fe3O4-β-amino acid methyl ester, and (D) Fe3O4@GO-Cys
Fig. 4 | BMC Chemistry
FE-SEM images of (A) GO, (B) GO-Cys, (C) Fe3O4-β-amino acid methyl ester, and (D) Fe3O4@GO-Cys