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Ultrathin organosiloxane membrane for precision organic solvent nanofiltration

Author

Listed:
  • Jihoon Choi

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

  • Keonwoo Choi

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

  • YongSung Kwon

    (Korea Research Institute of Chemical Technology)

  • Daehun Kim

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

  • Youngmin Yoo

    (Korea Research Institute of Chemical Technology)

  • Sung Gap Im

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

  • Dong-Yeun Koh

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

Abstract

Promising advances in membrane technology can lead to energy-saving and eco-friendly solutions in industrial sectors. This work demonstrates a highly selective membrane with ultrathin and highly interconnected organosiloxane polymer nanolayers by initiated chemical vapor deposition to effectively separate solutes within the molecular weight range of 150–300 g mol−1. We optimize the poly(1,3,5,7-tetravinyl-1,3,5,7-tetramethylcyclotetrasiloxane) membrane by adjusting both the thickness of the selective layer and the pore sizes of its support membranes. Notably, the 29 nm selective layer imparts a uniformly narrow molecular sieving property, providing a record-high solute-solute selectivity of 39.88 for different-sized solutes. Furthermore, a solute-solute selectivity of 11.04 was demonstrated using the real-world active pharmaceutical ingredient mixture of Acyclovir and Valacyclovir, key components for Herpes virus treatment, despite their molecular weight difference of less than 100 g mol−1. The highly interconnected membrane is expected to meet rigorous requirements for high-standard active pharmaceutical ingredient separation.

Suggested Citation

  • Jihoon Choi & Keonwoo Choi & YongSung Kwon & Daehun Kim & Youngmin Yoo & Sung Gap Im & Dong-Yeun Koh, 2024. "Ultrathin organosiloxane membrane for precision organic solvent nanofiltration," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-47115-9
    DOI: 10.1038/s41467-024-47115-9
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    References listed on IDEAS

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    1. Zhiwei Jiang & Ruijiao Dong & Austin M. Evans & Niklas Biere & Mahmood A. Ebrahim & Siyao Li & Dario Anselmetti & William R. Dichtel & Andrew G. Livingston, 2022. "Aligned macrocycle pores in ultrathin films for accurate molecular sieving," Nature, Nature, vol. 609(7925), pages 58-64, September.
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