Nitrogen-Doped Carbon Materials Prepared from Polyurethane Foams

N-doped carbon materials were prepared from polyurethane foams (PUFs) with glutaric dialdehyde under hydrothermal and carbonization processes. Glutaric dialdehyde could preserve morphology and nitrogen-containing groups of the PUFs, and promoted the aromatization of the resultant carbon materials. The rich of nitrogen content endowed it having high selectivity for CO2 capture from air.