Figure 9.
(A) Ce/qe vs Ce with the data fitted using the Langmuir model. (B) ln qe vs ln Ce with the data fitted using the Freundlich model (pH = 4, GO–PVPP content = 0.5 g/L, and t = 12 h).
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.