Novel One-Pot Solvothermal Synthesis of High-Performance Copper Hexacyanoferrate for Cs⁺ Removal from Wastewater

Figure 6

Effect of pH value on adsorption capacity (a). Influence of contact time on Cs⁺ adsorption (b). Nonlinear fitting diagrams of the adsorption kinetic model (c) (c₀ = 110 mg/L, m/V = 0.5 g/L, T = 298 K). Effects of initial concentration on Cs⁺ adsorption (d). Linear fitting diagram of Langmuir (e) and Freundlich (f) isotherm models (c₀ = 60–1300 mg/L, m/V = 0.5 g/L, t = 0.5 h).

(a)

(b)

(c)

(d)

(e)

(f)