fig16
From: Heterogeneous single-atom catalysts for energy process: recent progress, applications and challenges
Figure 16. Synthesis and structural characterization results. (A) Illustration of the preparation process for the Fe-SA-NSFC and (B) TEM, (C) HRTEM, and (D) HAADF-STEM images of the Fe-SA-NSFC; (E) Enlarged HAADF-STEM image and corresponding element maps for C, Fe, N, S, and F. (F) AC-HAADF-STEM image and (G) high-magnification AC-HAADF-STEM image of the Fe-SA-NSFC. Scale bars: (B) 200 nm, (C) 5 nm, (D) 200 nm, (E) 100 nm, (F) 5 nm, and (G) 2 nm. Reproduced from Ref.[160] with permission from Springer Nature.
