In this paper, a new Schiff base based on porous chitosan-glutaraldehyde /montmorrilonite nanoparticles modified with 3-aminopropyl triethoxysilane (PCG/ NaMMTNPs-APTES) nanocomposite was prepared using cationic copolymerization technique. The structure of the biosorbents was characterized using FTIR, SEM, TEM, DSC, TGA/DTG, BET, DLS and Zeta potential analysis. (320)