Fig. 7

Freundlich isotherm for BC (a) and Fe3O4@BC (b), Langmuir isotherms for BC (c) and Fe3O4@BC (d) at different temperatures
Freundlich isotherm for BC (a) and Fe3O4@BC (b), Langmuir isotherms for BC (c) and Fe3O4@BC (d) at different temperatures