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Large-area synthesis of nanoscopic catalyst-decorated conductive MOF film using microfluidic-based solution shearing

Author

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  • Jin-Oh Kim

    (Korea Advanced Institute of Science and Technology (KAIST))

  • Won-Tae Koo

    (Korea Advanced Institute of Science and Technology (KAIST)
    Membrane Innovation Center for Anti-virus & Air-quality Control, KAIST Institute for Nanocentury)

  • Hanul Kim

    (Korea Advanced Institute of Science and Technology (KAIST))

  • Chungseong Park

    (Korea Advanced Institute of Science and Technology (KAIST)
    Membrane Innovation Center for Anti-virus & Air-quality Control, KAIST Institute for Nanocentury)

  • Taehoon Lee

    (Korea Advanced Institute of Science and Technology (KAIST))

  • Calvin Andreas Hutomo

    (Korea Advanced Institute of Science and Technology (KAIST))

  • Siyoung Q. Choi

    (Korea Advanced Institute of Science and Technology (KAIST))

  • Dong Soo Kim

    (Hanbat National University)

  • Il-Doo Kim

    (Korea Advanced Institute of Science and Technology (KAIST)
    Membrane Innovation Center for Anti-virus & Air-quality Control, KAIST Institute for Nanocentury)

  • Steve Park

    (Korea Advanced Institute of Science and Technology (KAIST))

Abstract

Conductive metal-organic framework (C-MOF) thin-films have a wide variety of potential applications in the field of electronics, sensors, and energy devices. The immobilization of various functional species within the pores of C-MOFs can further improve the performance and extend the potential applications of C-MOFs thin films. However, developing facile and scalable synthesis of high quality ultra-thin C-MOFs while simultaneously immobilizing functional species within the MOF pores remains challenging. Here, we develop microfluidic channel-embedded solution-shearing (MiCS) for ultra-fast (≤5 mm/s) and large-area synthesis of high quality nanocatalyst-embedded C-MOF thin films with thickness controllability down to tens of nanometers. The MiCS method synthesizes nanoscopic catalyst-embedded C-MOF particles within the microfluidic channels, and simultaneously grows catalyst-embedded C-MOF thin-film uniformly over a large area using solution shearing. The thin film displays high nitrogen dioxide (NO2) sensing properties at room temperature in air amongst two-dimensional materials, owing to the high surface area and porosity of the ultra-thin C-MOFs, and the catalytic activity of the nanoscopic catalysts embedded in the C-MOFs. Therefore, our method, i.e. MiCS, can provide an efficient way to fabricate highly active and conductive porous materials for various applications.

Suggested Citation

  • Jin-Oh Kim & Won-Tae Koo & Hanul Kim & Chungseong Park & Taehoon Lee & Calvin Andreas Hutomo & Siyoung Q. Choi & Dong Soo Kim & Il-Doo Kim & Steve Park, 2021. "Large-area synthesis of nanoscopic catalyst-decorated conductive MOF film using microfluidic-based solution shearing," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
  • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-24571-1
    DOI: 10.1038/s41467-021-24571-1
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    References listed on IDEAS

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    1. Xiaodan Gu & Leo Shaw & Kevin Gu & Michael F. Toney & Zhenan Bao, 2018. "The meniscus-guided deposition of semiconducting polymers," Nature Communications, Nature, vol. 9(1), pages 1-16, December.
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