▎ 摘　　要

The persistent use of toxic chemicals, that is, azo dyes and heavy metals in various sectors like industries, agriculture and research laboratories have resulted in polluting different compartments of the environment with the residues. The present communication specifically aims to synthesize a nifty combination of graphene oxide (GO) functionalized with metal particles, that is, silver (Ag) and copper (Cu) to remediate the pollutants from the wastewater using the adsorption process. GO functionalized with a silver (AgGO) and copper metal (CuGO) were synthesized respectively and characterized as adsorbents for the removal of Malachite green, cadmium ions (Cd2+) and as a microbial entity, that is, Staphylococcus aureus. Results of Fourier-transform infrared spectroscopy and X-ray fluorescence techniques have confirmed the synthesis of GO and its functionalization. A close batch system of 60 min was designed to study the adsorption process under various parameters (concentration, contact time) using ultraviolet-visible spectroscopy and flame atomic absorption spectroscopy. Comparison of percentage removal of heavy metal between composites revealed a better adsorption trend by AgGO (94%) as compared with the prepared CuGO (84%) from wastewater. Contrary to that the percentage removal of azo dyes is 98% by CuGO. Kinetic studies favored pseudo-second-order and intraparticle diffusion models whereas adsorption studies favored Langmuir and Freundlich isotherms. The proposed composite comprises of graphene which is labeled as a bactericidal agent and after its metal functionalization enhances the antibacterial activity marvelously.