The modified hummers method was used to synthesize GO, and the coral reef shape morphology of Ag@rGO was synthesized through the chemical reduction method. As-synthesized GO, rGO, Ag NPs, and Ag@rGO were characterized using various characterization techniques such as Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Raman spectra, UV–Vis diffuse reflectance spectroscopy (UV-DRS), X-ray photoelectron spectrometer (XPS), N2 adsorption-desorption isotherms (BET), liquid chromatography with mass spectrometry LCMS, Moreover, thermal stability was studied using a thermogravimetric analyzer (TGA). The growth size, shape, and extent were studied using transmission electron microscopy (TEM) and field emission scanning electron microscopy (FESEM). The obtained material was partially in de-agglomerated and agglomerated form, and aggregation was due to electrostatic forces of attraction. Besides this, the synthesized GO (70 %), rGO (85 %), Ag NPs (92 %), and Ag@rGO (99 %) were utilized to investigate photocatalytic activity for the degradation of Methyl orange dye (MO) under sunlight. Ag@rGO shows effective catalytic activity as it degrades the azo dye effectively. The degradation was found to be maximum using Ag@rGO, showing 99 % (120 min).