A General Approach to Direct Growth of Oriented Metal–Organic Framework Nanosheets on Reduced Graphene Oxides

• Published in: Advanced science Vol. 7; no. 4; pp. 1901480 - n/a
• Main Authors: Liu, Chao, Huang, Xiaodan, Liu, Jizi, Wang, Jing, Chen, Zibin, Luo, Rui, Wang, Chaohai, Li, Jiansheng, Wang, Lianjun, Wan, Jingjing, Yu, Chengzhong
• Format: Journal Article
• Language: English
• Published: Germany John Wiley & Sons, Inc 01.02.2020; John Wiley and Sons Inc; Wiley
• Subjects: Diffraction; electrochemical application; Graphene; graphene oxide; metal–organic frameworks; Microscopy; Morphology; nanosheets; Pore size; graphene oxide; electrochemical application; metal–organic frameworks; nanosheets
• ISSN: 2198-3844; 2198-3844
• DOI: 10.1002/advs.201901480

Ultrathin metal–organic framework nanosheets (UMOFNs) deposited on graphene are highly attractive, however direct growth of UMOFNs on graphene with controlled orientations remains challenging. Here, a low‐concentration‐assisted heterogeneous nucleation strategy is reported for the direct growth of UMOFNs on reduced graphene oxides (rGO) surface with controllable orientations. This general strategy can be applied to construct various UMOFNs on rGO, including Co‐ZIF, Ni‐ZIF, Co, Cu‐ZIF and Co, Fe‐ZIF. When UMOFNs are mostly attached perpendicularly on rGO, a 3D foam‐like hierarchical architecture (named UMOFNs@rGO‐F) is formed with an open pore structure and excellent conductivity, showing excellent performance as electrode materials for Li‐ion batteries and oxygen evolution. The contribution has provided a strategy for improving the electrochemical performance of MOFs in energy storage applications. Ultrathin metal–organic framework (MOF) nanosheets perpendicularly anchored on the surface of reduced graphene oxides with hierarchical architecture, open pore structure and excellent conductivity are generally synthesized through a low‐concentration‐assisted heterogeneous nucleation strategy, which show excellent electrochemical performances. This work provides a new strategy for improving the electrochemical performance of pristine MOF in energy storage applications.