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Fabrication of Reduced Graphene Oxide (RGO)/Co3O4 Nanohybrid Particles and a RGO/Co3O4/Poly(vinylidene fluoride) Composite with Enhanced Wave-Absorption Properties

Authors

  • Guang-Sheng Wang,

    Corresponding author
    1. Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Chemistry and Environment, Beihang University, Beijing 100191 (P. R. China)
    • Guang-Sheng Wang, Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Chemistry and Environment, Beihang University, Beijing 100191 (P. R. China)

      Lin Guo, Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Chemistry and Environment, Beihang University, Beijing 100191 (P. R. China)

      Mao-Sheng Cao, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081 (P. R. China)

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  • Yun Wu,

    1. Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Chemistry and Environment, Beihang University, Beijing 100191 (P. R. China)
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  • Yun-Zhao Wei,

    1. Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Chemistry and Environment, Beihang University, Beijing 100191 (P. R. China)
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  • Xiao-Juan Zhang,

    1. Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Chemistry and Environment, Beihang University, Beijing 100191 (P. R. China)
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  • Yong Li,

    1. School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081 (P. R. China)
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  • Li-Dong Li,

    1. Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Chemistry and Environment, Beihang University, Beijing 100191 (P. R. China)
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  • Bo Wen,

    1. School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081 (P. R. China)
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  • Peng-Gang Yin,

    1. Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Chemistry and Environment, Beihang University, Beijing 100191 (P. R. China)
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  • Lin Guo,

    Corresponding author
    1. Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Chemistry and Environment, Beihang University, Beijing 100191 (P. R. China)
    • Guang-Sheng Wang, Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Chemistry and Environment, Beihang University, Beijing 100191 (P. R. China)

      Lin Guo, Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Chemistry and Environment, Beihang University, Beijing 100191 (P. R. China)

      Mao-Sheng Cao, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081 (P. R. China)

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  • Mao-Sheng Cao

    Corresponding author
    1. School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081 (P. R. China)
    • Guang-Sheng Wang, Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Chemistry and Environment, Beihang University, Beijing 100191 (P. R. China)

      Lin Guo, Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Chemistry and Environment, Beihang University, Beijing 100191 (P. R. China)

      Mao-Sheng Cao, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081 (P. R. China)

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Abstract

Reduced graphene oxide (RGO)/Co3O4 nanohybrid particles, composed of reduced graphite oxide and Co3O4 particles, have been fabricated by an in situ growth method under mild wet-chemical conditions (140 °C). A series of characterization results indicate that the as-prepared Co3O4 particles with relatively uniform sizes are embedded in RGO layers to form unique core–shell nanostructures. The RGO/Co3O4/poly(vinylidene fluoride) composite was found to possess excellent absorption properties. Owing to the effect of the negative permeability, the position of the absorption peaks remains at the same frequency at different thicknesses without shifting to lower frequencies. For the composites with a filler loading of 10 wt %, the maximum peaks can reach −25.05 dB at 11.6 GHz with a thickness of 4.0 mm. These enhanced microwave absorbing properties can be explained based on the structures of the nanohybrid particles.

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