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Issue 8, 2015
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Hierarchical graphene@Fe3O4 nanocluster@carbon@MnO2 nanosheet array composites: synthesis and microwave absorption performance

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Abstract

The fabrication of novel hierarchical graphene@Fe3O4 nanocluster@carbon@MnO2 nanosheet array composites has been successfully carried out for the first time. The fabrication process involves the deposition of Fe3O4 nanoclusters on graphene's surface using a simple in situ hydrothermal method, subsequent introduction of carbon on the surface of graphene@Fe3O4 nanoclusters by combining the hydrothermal reaction and thermal treatment process, and finally formation of the hierarchical composites via a simple in situ redox replacement reaction between potassium permanganate (KMnO4) and carbon on the surface of graphene@Fe3O4 nanoclusters. Moreover, the microwave absorption properties of both graphene@Fe3O4 nanoclusters and hierarchical graphene@Fe3O4 nanocluster@carbon@MnO2 nanosheet array composites were investigated between 2 and 18 GHz microwave frequency bands. The electromagnetic data demonstrate that graphene@Fe3O4 nanocluster@carbon@MnO2 nanosheet array hierarchical composites exhibit significantly enhanced microwave absorption properties compared with graphene@Fe3O4 nanoclusters, which probably originate from the unique hierarchical structure and larger surface area.

Graphical abstract: Hierarchical graphene@Fe3O4 nanocluster@carbon@MnO2 nanosheet array composites: synthesis and microwave absorption performance

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Publication details

The article was received on 29 Nov 2014, accepted on 21 Jan 2015 and first published on 23 Jan 2015


Article type: Paper
DOI: 10.1039/C4CP05556J
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Citation: Phys. Chem. Chem. Phys., 2015,17, 5878-5886

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    Hierarchical graphene@Fe3O4 nanocluster@carbon@MnO2 nanosheet array composites: synthesis and microwave absorption performance

    L. Wang, Y. Huang, C. Li, J. Chen and X. Sun, Phys. Chem. Chem. Phys., 2015, 17, 5878
    DOI: 10.1039/C4CP05556J

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