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Fire-retardant and thermal insulating honeycomb-like NiS2/SnS2 nanosheets @ 3D porous carbon hybrids for high-efficiency electromagnetic wave absorption

Dong, Yanyan ; Zhu, Xiaojie ; Pan, Fei ; Xiang, Zhen ; Zhang, Xiang ; Cai, Lei ; Lu, Wei

Chemical engineering journal (Lausanne, Switzerland : 1996), 2021-12, Vol.426, p.131272, Article 131272 [Periódico revisado por pares]

Elsevier B.V

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  • Título:
    Fire-retardant and thermal insulating honeycomb-like NiS2/SnS2 nanosheets @ 3D porous carbon hybrids for high-efficiency electromagnetic wave absorption
  • Autor: Dong, Yanyan ; Zhu, Xiaojie ; Pan, Fei ; Xiang, Zhen ; Zhang, Xiang ; Cai, Lei ; Lu, Wei
  • Assuntos: Biomass-derived porous carbon ; Electromagnetic wave absorption ; Multi-functionalization ; NiS2/SnS2 nanosheets
  • É parte de: Chemical engineering journal (Lausanne, Switzerland : 1996), 2021-12, Vol.426, p.131272, Article 131272
  • Descrição: Fire-retardant and thermal insulating honeycomb-like NiS2/SnS2 nanosheets @ 3D porous carbon hybrids for high-efficiency electromagnetic wave absorption. [Display omitted] •Honeycomb-like NiS2/SnS2 nanosheets @ 3D porous carbon hybrids were rationally constructed.•PC-NSS exhibited preeminent infrared stealth property, thermal insulation capability, flame retardance and heat stability.•A minimum RL of −52.97 dB and a EAB of 4.8 GHz with a thin matching thickness of 1.57 mm was achieved. Searching for electromagnetic wave (EMW) absorbers with high-efficient absorption and multi-functionalization is very eager to satisfy modern society’s technical requirements. Inspired by nature, popcorn-derived honeycomb-like NiS2/SnS2 nanosheets @ 3D porous carbon hybrids (PC-NSS) were fabricated through hydrothermal and carbonization methods. As multifunctional electromagnetic wave absorption (EMA) materials, PC-NSS exhibited preeminent infrared stealth property, thermal insulation capability and flame retardance. By adjusting the carbonization temperatures, an excellent EMA performance with a reflection loss (RL) of −52.97 dB and an effective absorption bandwidth (EAB) of 4.8 GHz at 1.57 mm was assigned to PC-NSS. The outstanding EMA performance could be attributed to the synergistic effect of impedance matching, conduction loss, polarization loss, and multiple reflections. The multi-functionality of the thermal insulation capability, the flame retardance, and the EMA performance in PC-NSS hybrids guarantee their practical stealth application in harsh environments. Therefore, this work sheds light on the rational design and fabrication of multifunctional EMW absorption materials for practical applications.
  • Editor: Elsevier B.V
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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