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Superhydrophilic and Underwater Superoleophobic Copper Mesh Coated with Bamboo Cellulose Hydrogel for Efficient Oil/Water Separation

Polymers, 2023-12, Vol.16 (1), p.14 [Peer Reviewed Journal]

COPYRIGHT 2023 MDPI AG ;2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;2023 by the authors. 2023 ;ISSN: 2073-4360 ;EISSN: 2073-4360 ;DOI: 10.3390/polym16010014 ;PMID: 38201679

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  • Title:
    Superhydrophilic and Underwater Superoleophobic Copper Mesh Coated with Bamboo Cellulose Hydrogel for Efficient Oil/Water Separation
  • Author: Peng, Yun ; Zhao, Shuang ; Huang, Chuanlin ; Deng, Feifei ; Liu, Jie ; Liu, Chunhua ; Li, Yibao
  • Subjects: Bamboo ; bamboo cellulose ; Cellulose ; Contact angle ; Copper ; Cotton ; Dip coatings ; Efficiency ; Energy consumption ; Ethanol ; Fourier transforms ; hydrogel coating ; Hydrogels ; Hydrophilicity ; Immersion coating ; Membrane separation ; Membranes ; Methods ; oil/water separation ; Separation ; Solvents ; Spectrum analysis ; Underwater ; Wastewater ; Wettability ; Wetting
  • Is Part Of: Polymers, 2023-12, Vol.16 (1), p.14
  • Description: Super-wetting interface materials have shown great potential for applications in oil-water separation. Hydrogel-based materials, in particular, have been extensively studied for separating water from oily wastewater due to their unique hydrophilicity and excellent anti-oil effect. In this study, a superhydrophilic and underwater superoleophobic bamboo cellulose hydrogel-coated mesh was fabricated using a feasible and eco-friendly dip-coating method. The process involved dissolving bamboo cellulose in a green alkaline/urea aqueous solvent system, followed by regeneration in ethanol solvent, without the addition of surface modifiers. The resulting membrane exhibited excellent special wettability, with superhydrophilicity and underwater superoleophobicity, enabling oil-water separation through a gravity-driven "water-removing" mode. The super-wetting composite membrane demonstrated a high separation efficiency of higher than 98% and a permeate flux of up to 9168 L·m ·h for numerous oil/water mixtures. It also maintained a separation efficiency of >95% even after 10 cycles of separation, indicating its long-term stability. This study presents a green, simple, cost-effective, and environmentally friendly approach for fabricating superhydrophilic surfaces to achieve oil-water separation. It also highlights the potential of bamboo-based materials in the field of oil-water separation.
  • Publisher: Switzerland: MDPI AG
  • Language: English
  • Identifier: ISSN: 2073-4360
    EISSN: 2073-4360
    DOI: 10.3390/polym16010014
    PMID: 38201679
  • Source: PubMed Central (Open access)
    Geneva Foundation Free Medical Journals at publisher websites
    AUTh Library subscriptions: ProQuest Central
    Directory of Open Access Journals
    ROAD: Directory of Open Access Scholarly Resources
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