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.
SEM images of the samples after five cycles (a) Fe3O4@GO-c toward MB, (b) Fe3O4@GO-e toward MB, (c) Fe3O4@GO-c toward Pb(II), and (d) Fe3O4@GO-e toward Pb(II); TEM images of the samples after five cycles (e) Fe3O4@GO-c toward Pb(II) and (f) Fe3O4@GO-e toward Pb(II).
