Chemical modification of carbon powders with aminophenyl and aryl-aliphatic amine groups by reduction of in situ generated diazonium cations: Applicability of the grafted powder towards CO2 capture

► Grafting of aminophenyl and aryl-aliphatic amine groups on Vulcan XC72R. ► Spontaneous reduction of in situ generated diazonium cations. ► Strong impact of the grafted layer on porous properties of the carbon support. ► Thermal stability of the grafted layer up to 250 °C. ► CO2 adsorption mechanism mainly governed by physisorption.