Fig. 6.

The role of adsorption and possible mechanism scheme. (A) Plots of k_app versus q_e,cal manipulated through the addition of Al³⁺ for Fe₂O₃@FCNT-H toward various cationic compounds. Reaction conditions: pH = 5.0, T = 293.2 K, [Fe₂O₃@FCNT-H] = 1.5 × 10⁻² g∙L⁻¹, [target compounds] = 10 μM, [H₂O₂] = 50 mM, [Al³⁺] = 0.1–1 mM. (B) Illustration of possible mechanism of pollutants degradation in Fe₂O₃@FCNT-H/H₂O₂ system.