The research on synthesis of composites Kitosan-Al2O3 by the sol-gel methodfor photodegradation of methylene blue has been carriedout.Chitosan-Al2O3 varied by mass ratios (1:1), (1:2) and (1:3). The product were characterized using XRD, UV-DRS and SEM-EDS. The Chitosan-Al2O3 (1:1) composite was chosen as a material for degrading methylene blueby various condition, i.e., effect of pH, contact ti…