Li, ChangxiaYang, JinPachfule, PradipLi, ShuangYe, Meng-YangSchmidt, JohannesThomas, Arne2021-03-042021-03-042020-09-18https://depositonce.tu-berlin.de/handle/11303/12709http://dx.doi.org/10.14279/depositonce-11509The fabrication of macroscopic objects from covalent organic frameworks (COFs) is challenging but of great significance to fully exploit their chemical functionality and porosity. Herein, COF/reduced graphene oxide (rGO) aerogels synthesized by a hydrothermal approach are presented. The COFs grow in situ along the surface of the 2D graphene sheets, which are stacked in a 3D fashion, forming an ultralight aerogel with a hierarchical porous structure after freeze-drying, which can be compressed and expanded several times without breaking. The COF/rGO aerogels show excellent absorption capacity (uptake of >200 g organic solvent/g aerogel), which can be used for removal of various organic liquids from water. Moreover, as active material of supercapacitor devices, the aerogel delivers a high capacitance of 269 F g −1 at 0.5 A g −1 and cycling stability over 5000 cycles. Macroscopic architectures of covalent organic frameworks (COF) allow to fully exploit their chemical functionality and porosity but achieving three-dimensional hierarchical porous COF architectures remains challenging. Here, the authors present a COF/reduced graphene oxide aerogel which is synthesized by growing COF during a hydrothermal process along the surface of graphene sheets.en540 Chemie und zugeordnete Wissenschaftenmechanical and structural properties and devicesself-assemblysynthesisprocessingframework/graphene aerogelsArticle2041-1723