Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(a) Schematic illustration of the synthesis of CuN4/CoN2P2@NPC. (b,c) SEM. (d) TEM. (e,f1) HAADF-STEM. (f2–f7) Corresponding elemental mapping images of the Cu-complex@MP-Co. (g–i) HAADF-STEM. (j) AC HAADF-STEM. (k1) ABF-STE.M (k2–k7) Corresponding elemental mapping images of the CuN4/CoN2P2@NPC.
