We prepared tri-isocyanate reinforced graphene aerogel with a low bulk density (0.08 g/cm(3)), high compressive failure strength (0.24 MPa), and good adsorption ability towards crude oil (similar to 169 mg/g), through self-assembly of graphene under hydrothermal condition, tri-isocyanate reinforcement and subsequent supercritical CO2 drying process. (C) 2012 Elsevier Inc. All rights reserved.