This research aims to produce a Bentonite-PDA-NiO composite which can be used as a photocatalyst to degrade Methylene Blue dye. The composite was made with a mass ratio of 1:1 and then characterized using XRD, SEM-EDX, and UV-Vis DRS. The photodegradation process of Methylene Blue was carried out by varying the initial dye concentration, time, and mass of the composite, as well as at certain pH…