Figure 3.
Scanning electron micrographs of TiO2 NPs (a,b) and SiO2 NPs (c,d). (b) and (d) display measurements of TiO2 NPs and SiO2 NPs, respectively.
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.