Synthesis of conductive polymer-coated mesoporous MCM-41 for textile dye removal from aqueous media

In this paper, we aimed to evaluate Acid Blue 62 removal from aqueous media, using mesoporous silicate MCM-41, loaded with polypyrrole (PPy) and polyaniline (PAni) composites. PPy/MCM-41 nanocomposite showed higher performance than PAni/MCM-41 due to its smaller molecule size. For characterizing the synthesized composites, different methods were applied. The Langmuir model showed the greatest agreement with the experimental findings (q (m), 55.55 mg g(-1)). The kinetic study also confirmed the compatibility between the pseudo-second-order model and adsorption. Moreover, we measured Gibbs free energy changes (Delta G (o)) and enthalpy changes (Delta H (o)). Considering the negative Delta G (o) and positive Delta H (o), AB62 adsorption on PPy/MCM-41 nanocomposite can be considered a spontaneous, endothermic reaction.