Abstract
Degradable materials have been used for the preparation of oil-water separation membranes, especially cellulose-based membranes. However, the extraction of cellulose nanofibers is time, energy, and chemically intensive and the source of cellulose is mainly wood, bamboo, cotton, and flax. Herein, we report a top-down approach for the scalable production of structurally asymmetric composite cellulose membranes from loofah. The tear strength of the membrane was 388.7% times of the PVDF membrane and the preparation cost was only 3.3% of the price of commercially available nitrocellulose membrane. A superhydrophobic renewable and degradable cellulose membrane with a surface water contact angle of 152.3°can be prepared by a one-step method using the cellulose membrane as a substrate and dodecyltriethoxysilane as a modifier. The superhydrophobic cellulose membrane could separate oil and water by continuous filtration with high efficiency (98.1%) and high flux (2349Lm-2h-1). Such a simple and low-cost method could promote the popularity of separation membranes.
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The authors profusely thank the Natural Science Foundation of China [grant number 51776070], and the State Grid Science and Technology Program [SGGNSW00YWJS2100024].
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Changqing Dong and Xiaoying Hu contributed to conceptualization and methodology. Tong Xing contributed to the investigation, data analysis, and writing the original draft and all other authors contribute to the review, editing, and preparation of the final draft. All authors read and approved the final manuscript.
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Xing, T., Dong, C., Hu, X. et al. Cellulose membranes via a top-down approach from loofah for oil/water separation. Biomass Conv. Bioref. (2023). https://doi.org/10.1007/s13399-023-03766-0
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DOI: https://doi.org/10.1007/s13399-023-03766-0