Figure 3.
SEM images of (a) Fe3O4; (b) APTES–Fe3O4; (c) magnetic CALB CLEAs; (d) CALB CLEAs.
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.