Fig. 2: Morphological characterization of PtSA@S-TFPT.

a A transmission electron microscopy image of PtSA@S-TFPT. Insert: fast fourier transform (FFT) from white box, and lattice spacing viewed along the [001] direction. b An AC-HAADF-STEM image of PtSA@S-TFPT. c AC HAADF-STEM image and (d–h) corresponding EDX mapping of PtSA@S-TFPT.