Figure 5

TEM image of (a). Fe3O4, (b). Fe3O4@SiO2 (c). Fe3O4@SiO2-16-PHDA; (d). Fe3O4@SiO2-16-PHDA-α-transglucosidase (Scale bar 50 nm).
TEM image of (a). Fe3O4, (b). Fe3O4@SiO2 (c). Fe3O4@SiO2-16-PHDA; (d). Fe3O4@SiO2-16-PHDA-α-transglucosidase (Scale bar 50 nm).