A General Approach to Direct Growth of Oriented Metal-Organic Framework Nanosheets on Reduced Graphene Oxides.,Advanced Science

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A General Approach to Direct Growth of Oriented Metal-Organic Framework Nanosheets on Reduced Graphene Oxides.
Advanced Science ( IF 14.3 ) Pub Date : 2020-01-03 , DOI: 10.1002/advs.201901480
Chao Liu _{1,

2,

3} , Xiaodan Huang ₃ , Jizi Liu ₄ , Jing Wang _{1,

2,

3} , Zibin Chen ₅ , Rui Luo ₂ , Chaohai Wang ₂ , Jiansheng Li ₂ , Lianjun Wang ₂ , Jingjing Wan ₁ , Chengzhong Yu _{1,

3}

Affiliation

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.

中文翻译：

在还原氧化石墨烯上直接生长定向金属有机框架纳米片的通用方法。

沉积在石墨烯上的超薄金属有机框架纳米片（UMOFN）非常有吸引力，但是在石墨烯上以受控方向直接生长 UMOFN 仍然具有挑战性。在这里，报道了一种低浓度辅助异质成核策略，用于在还原氧化石墨烯（rGO）表面上以可控方向直接生长UMOFN。该通用策略可用于在rGO上构建各种UMOFN，包括Co-ZIF、Ni-ZIF、Co、Cu-ZIF和Co、Fe-ZIF。当UMOFNs大部分垂直附着在rGO上时，会形成3D泡沫状分层结构（命名为UMOFNs@rGO-F），具有开孔结构和优异的导电性，显示出作为锂离子电池电极材料和析氧的优异性能。该贡献为提高 MOF 在储能应用中的电化学性能提供了策略。

更新日期：2020-01-04

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