| 초록 |
Functionalized graphene aerogel with high porosity and hydrophobicity is prepared by surface modification of self-assembled graphene oxide aerogels. Fluorinated functional groups are introduced into the surface of three-dimensionally macroporous graphene aerogel through a one-step solution immersion method. The functionalized graphene aerogel represents superior physical features, including low density (bulk density of 14.4 mg cm-3), high porosity (＞ 87%), mechanical stability (supports at least 2600 times its own weight), and hydrophobicity (contact angle of 144°). By combining the structural features and hydrophobic surface property, the functionalized graphene aerogel not only exhibits excellent absorption performance for various types of oils and organic solvents, but also shows a remarkable regeneration capability, making them an ideal candidate for eliminating spilled oils and other toxic organic pollutants. |
