TiO2 is a semiconductor material as a catalyst to degrade pollutants. On the other hand, TiO2 is easily dissolved in many solvents. Therefore, it needs to be doped with NiFe2O4 and coated with chitosan-glutaraldehyde. The synthesized NiFe2O4/chitosan-glutaraldehyde/TiO2 composite was used to reduce the concentration of methylene blue solution. The synthesized composite was characterized by XRD,…