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General molten-salt route to three-dimensional porous transition metal nitrides as sensitive and stable Raman substrates

Author

Listed:
  • Haomin Guan

    (Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine
    Jiangsu University)

  • Wentao Li

    (Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine)

  • Jing Han

    (Technical Center of Qianjiang Customs House, General Administration of Customs)

  • Wencai Yi

    (Qufu Normal University)

  • Hua Bai

    (Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine)

  • Qinghong Kong

    (Jiangsu University)

  • Guangcheng Xi

    (Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine)

Abstract

Transition metal nitrides have been widely studied due to their high electrical conductivity and excellent chemical stability. However, their preparation traditionally requires harsh conditions because of the ultrahigh activation energy barrier they need to cross in nucleation. Herein, we report three-dimensional porous VN, MoN, WN, and TiN with high surface area and porosity that are prepared by a general and mild molten-salt route. Trace water is found to be a key factor for the formation of these porous transition metal nitrides. The porous transition metal nitrides show hydrophobic surface and can adsorb a series of organic compounds with high capacity. Among them, the porous VN shows strong surface plasmon resonance, high conductivity, and a remarkable photothermal conversion efficiency. As a new type of corrosion- and radiation-resistant surface-enhanced Raman scattering substrate, the porous VN exhibits an ultrasensitive detection limit of 10−11 M for polychlorophenol.

Suggested Citation

  • Haomin Guan & Wentao Li & Jing Han & Wencai Yi & Hua Bai & Qinghong Kong & Guangcheng Xi, 2021. "General molten-salt route to three-dimensional porous transition metal nitrides as sensitive and stable Raman substrates," Nature Communications, Nature, vol. 12(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-21693-4
    DOI: 10.1038/s41467-021-21693-4
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    Cited by:

    1. Lu Zhang & Wencai Yi & Junfang Li & Guoying Wei & Guangcheng Xi & Lanqun Mao, 2023. "Surfactant-free interfacial growth of graphdiyne hollow microspheres and the mechanistic origin of their SERS activity," Nature Communications, Nature, vol. 14(1), pages 1-10, December.

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