摘要： The nanocomposites of GO/ZnO nanodrums were successfully synthesized and applied for photocatalytic degradation of methylene blue. GO was synthesized by Hummer method and ZnO nanodrums was synthesized by hydrothermal method. Characterization of GO and ZnO nanodrums was performed using XRD (X-Ray Diffraction), SEM (Scanning Electron Microscopy), UV-Vis spectrophotometer, and FTIR (Fourier Transform Infra-Red). GO/ZnO nanodrums was mixed of GO and ZnO with various composition. The variation of GO/ZnO nanodrums was 1: 0; 1: 1, and 1: 2 (w/w) in distilled water. This composite was then carried out in photocatalyst degradation process of Methylene Blue. XRD of GO showed that graphene oxide has been formed with good crystallinity. The obtained morphology showed that regular arranged sheets/layer has been formed. The peak of GO showed in UV region and from the FTIR data indicated absorption at 3500 cm-1 which is O-H uptake. In graphene oxide, OH groups act in photocatalytic activity. ZnO nanodrums showed 3 dominant peak in the 2θ= 30-40°. This showed that ZnO had high crystallinity with crystallite size was 43.46 nm. The morphology of ZnO was nanodrums and it had peak UV at 369 nm. The result of the composite GO/ZnO nanodrums was applied in the photocatalytic of methylene blue with several variations. Photodegradation of methylene blue showed the increasing photocatalytic degradation by GO addition. GO/ZnO nanodrums could degrade methylene blue reach 94.05% during 1 hours contact time and under 254 nm of UV radiation.