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Immobilization of UiO-66-NH 2 into Bacterial Cellulose Aerogels for Efficient Particulate Matter Filtration

Author

Listed:
  • Qihang Dai

    (Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China)

  • Ju Liu

    (Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China)

  • Junjie Zheng

    (School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
    China National Quality Supervision Testing Center for Industrial Explosive Materials, Nanjing 210094, China)

  • Bo Fu

    (Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China)

Abstract

Metal–organic frameworks (MOFs) hold great potential for efficient removal of particulate matter (PM) due to their high porosity and tunable surface groups. In this work, sustainable bacterial cellulose (BC) was employed as a substrate for Zr-based MOF (i.e., UiO-66-NH 2 ) deposition. Specifically, the UiO-66-NH 2 @BC aerogel exhibits a multi-level pore structure with a specific surface area of 103 m 2 /g. Pristine BC aerogels indicated a removal efficiency of 50.6% for PM 2.5 , with a pressure drop of 22.8 Pa. While UiO-66-NH 2 @BC aerogels showed a PM 2.5 removal efficiency of 96.9%. The filtration mechanism can be assigned to the following reasons: (i) the interception/impaction of PM with the fibrous and porous aerogel network; and (ii) the presence of polar amine groups that boost electrostatic interactions between PM and MOFs. Moreover, as-prepared filters can be regenerated in a facile way with good reusability and long-term stability.

Suggested Citation

  • Qihang Dai & Ju Liu & Junjie Zheng & Bo Fu, 2023. "Immobilization of UiO-66-NH 2 into Bacterial Cellulose Aerogels for Efficient Particulate Matter Filtration," Sustainability, MDPI, vol. 15(18), pages 1-11, September.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:18:p:13382-:d:1234507
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