Figure 3.
(a) Adsorption isotherms of Zr-BDC-CP toward methylene blue at different initial dye concentrations; (b) adsorption isotherm of UiO-66 at an initial dye concentration of 100 mg/L; (c) effect of initial concentration on the adsorption capacity of methylene blue by Zr-BDC-CP; and (d) effect of initial concentration on the decolorization ratio of Zr-BDC-CP for removal of methylene blue.