Fig. 4From: One-Pot Method for Multifunctional Yolk Structured Nanocomposites with N-doped Carbon Shell Using Polydopamine as PrecursorTEM images of core–shell and yolk shell functional nanocomposites. Fe3O4@SiO2@Pdop (a) and Fe3O4@void@C (b). α-Fe2O3@SiO2@Pdop (c) and α-Fe2O3@void@C (d). CNTs@Fe3O4@SiO2@Pdop (e) and CNTs@Fe3O4@void@C (f) Ag@SiO2@Pdop (g) and Ag@void@C (h)Back to article page