Metal Oxide-Coated Three-Dimensional Graphene Prepared by the Use of Metal-Organic Frameworks as Precursors

A simple method for the preparation of metal‐oxide‐coated three‐dimensional (3D) graphene composites was developed. The metal–organic frameworks (MOFs) that served as the precursors of the metal oxides were first synthesized on the 3D graphene networks (3DGNs). The desired metal oxide/3DGN composite...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2014-01, Vol.53 (5), p.1404-1409
Main Authors: Cao, Xiehong, Zheng, Bing, Rui, Xianhong, Shi, Wenhui, Yan, Qingyu, Zhang, Hua
Format: Article
Language:English
Subjects:
Annealing
composite materials
Graphene
Lithium batteries
lithium-ion batteries
Materials selection
Metal oxides
Metal-organic frameworks
Networks
photocatalysis
Precursors
Sensors
Three dimensional
three-dimensional graphene networks
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Summary:A simple method for the preparation of metal‐oxide‐coated three‐dimensional (3D) graphene composites was developed. The metal–organic frameworks (MOFs) that served as the precursors of the metal oxides were first synthesized on the 3D graphene networks (3DGNs). The desired metal oxide/3DGN composites were then obtained by a two‐step annealing process. As a proof‐of‐concept application, the obtained ZnO/3DGN and Fe2O3/3DGN materials were used in a photocatalytic reaction and a lithium‐ion battery, respectively. We believe this method could be extended to the synthesis of other metal oxide/3DGN composites with 3D structures simply through the appropriate choice of specific MOFs as precursors. Flexible method, flexible materials: In a simple method for the preparation of metal‐oxide‐coated 3D graphene composites, metal–organic frameworks that served as precursors of the metal oxides were synthesized on 3D graphene networks (3DGNs), and the metal oxide/3DGN composites were then obtained by a two‐step annealing process. ZnO/3DGN and Fe2O3/3DGN (see picture) were tested successfully in a photocatalytic reaction and a lithium‐ion battery.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201308013