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A facile method was approached to synthesize a new series of highly porous polyethylene glycol (PEG) and Ag-ZnO (AZO) grafted polyaniline (PANI) nanocomposites (PAPE/AZO) for investigation of the adsorption behavior of brilliant green dye (BG). The compositions of Ag (1, 3 and 5%) in AZO were varied to assess the influence of bimetallic oxide incorporation. The nanocomposites were characterized by FTIR, XRD, SEM and TEM analyses. The adsorption performance of the PAPE/AZO was assessed by various parametric changes viz. contact time, pH, temperature, concentration of the dye and adsorbent dosage. The highest adsorption capacity of 94.46 mg g⁻¹ was achieved at the optimum conditions of 0.075 g adsorbent dosage, 70 mg L⁻¹ dye concentration, 1% AZO and pH 2. BET and BJH analyses of the nanocomposite confirmed the higher surface area and pore volume with lower amount of AZO …