
Keywords: Alginate beads; Graphene oxides; Calix[4]arenes; Surface modification; Dye adsorption; SA; sodium alginate; C4As; calix[4]arenes; BC4A; p-tert-butyl calix[4]arene; SC4A; sodium p-sulfonatocalix[4]arene; GO; graphene oxide; AB; alginate beads; FTIR; Fourie