Figure 3.
(a) Raman spectra of the GH and the NP-GH. XPS spectra of (b) C 1 s and (c) Au 4 f for the GH and the NP-GH.
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.