| 초록 |
Recently, the porous carbon solids have received significant attentions for the capture of CO2 and SO2 due to their structural tuability, thermal stability, low density, and diverse chemistries. Herein, we demonstrate large surface area (＞ 1600 m2/g) and ultrahigh porosity (＞ 98%) of three-dimensional (3D) ultralight, macro- and micro-porous reduced graphene oxide (m2-rGO) monoliths by simple and clean steam (or CO2) activation chemistry. The resultant steam (CO2)-actived m2-rGO adsorbents are applied into CO2 & SO2 capture to demonstrate the superiority of hierarchical textures and structures. The steam (or CO2) activated 3D m2-rGO monoliths are attractive as high capacitive materials because of facile accessibility to adsorption site and fast mass transport. Furthermore, the macroscopically monolithic adsorbents assembled by nanoscopic graphene multilayers can expand their applicative fields because handling them is easier than doing powdery sorbents and monoliths are chemically and structurally uniform and thus, more fitted to process applications. |
