FIGURE 5.
(A) Full survey spectrum XPS spectrum of CG-CDs. The high-resolution (B) C1s, (C) Ols, and (D) N1s XPS spectrum of CG-CDs.
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.