Figure 6.
Survey X-ray photoelectron spectroscopy (XPS) spectra of FCNs (A) and high-resolution XPS data of C1s (B), N1s (C) and O1s (D).
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.