Recyclable GO-Arginine Hybrids for CO2 Fixation into Cyclic Carbonates

New covalently modified GO-guanidine materials are realized on a gram-scale synthesis and purified via an innovative microfiltration. The use of these composites in the fixation of CO2into cyclic carbonates is demonstrated. Mild operating conditions, high yields (up to 85%), wide scope (15 examples) and recoverability/reusability (up to 5 cycle) of the material account for the efficiency of the protocol. Dedicated control experiments contributed to shed light on the activation modes exerted by the GO-Arg (Arg: arginine) during the ring-opening/closing synthetic sequence.