Author/Authors :
Szabَ، نويسنده , , Tamلs and Szabَ-Plلnka، نويسنده , , Terézia and Jَnلs، نويسنده , , Dominika and Nagy، نويسنده , , Nَra Veronika and Rockenbauer، نويسنده , , Antal and Dékلny، نويسنده , , Imre، نويسنده ,
Abstract :
Copper-intercalated graphite oxides (GO) were prepared by adding complex solutions of cupric ions and 2,2′-bipyridine (L) ligands to exfoliated GO dispersion at pH = 7. High adsorption capacity (>140 mg Cu/g GO) was found for adsorption from equimolar solution of Cu2+ and L, while the excess of ligand results in progressively decreasing adsorbed amounts. Electron paramagnetic resonance spectra revealed two principal adsorption mechanisms: the CuL 3 2 + complex undergoes ion exchange adsorption, while CuL2+ and CuL 2 2 + bind to graphene oxide layers by coordination.
