Fig. 2From: α-Fe2O3@Pt heterostructure particles to enable sonodynamic therapy with self-supplied O2 and imaging-guidanceSynthesis of α-Fe2O3@Pt nanoparticles (FP NPs). a Scheme for the synthesis approach. TEM images of b α-Fe2O3 and c FP NPs. d High-resolution TEM image and e element mappings of FP NPs. f XRD patterns for α-Fe2O3 and FP NPs. g XPS spectra of the Fe 2p peaks in FP NPs. h The diameter distribution of Fe2O3 and FP NPsBack to article page