Comparison between blue methylene adsorption in graphene oxide and activated carbon

This work presents the comparison between blue methylene adsorption in Graphene oxide (GO) and activated carbon (AC), employing UV-Vis spectroscopy technique. GO samples were synthesized by using pyrolysis method. The GO samples were activated by chemical and physical methods, employing NaOH agent and laser induced graphene (LIG) system. Results at 72, 81, 83 and 88 % of adsorption in GO-without activation, AC-NaOH, GO-LIG and GO-NaOH as filaments; respectively, revealed that GO-NaOH samples, exhibits more adsorption, possibly attributed to high surface area, as expected. These results suggest that GO-NaOH are excellent candidate material to filters.