Furthermore, the extensive repulsion of metal ions due to protonation of active sites of DETA-MCM-41 surface at lower pH may be another reason for decrease in Mn(II) ions adsorption at pH < 5
Furthermore, the extensive repulsion of metal ionsdue to protonation of active sites of DETA-MCM-41 surface atlower pH may be another reason for decrease in Mn(II) ionsadsorption at pH < 5