“…The characteristic diffraction peaks at 2θ = 30.44, 35.32, 44.42, 53.8, 56.2, and 63.7°corresponded to {220}, {311}, {400}, {422}, {511}, and {440} planes, respectively, of the cubic structure of Fe 3 O 4 . 38,4238,42 The peak at 24.22 and 32.86°r epresented the PEC of the NPs, while the peak at 21.7 and 28.8°was attributed to the presence of DOX. These results suggest that Fe 3 O 4 was successfully loaded on PD, forming crystalline Fe 3 O 4 @PD-5 NPs.…”