Lignocellulose and polydopamine composite superhydrophobic and photothermal membrane: A green innovative solution for oil/water separation and high-viscosity oil adsorption

IF 8.5 1区化学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY

International Journal of Biological Macromolecules Pub Date : 2025-07-01 DOI:10.1016/j.ijbiomac.2025.145685

Dongsheng Song , Congcong An , Zhe Zhang, Yu Qiu, Zhimin Zhao, Dingqiang Zheng, Ming Zhang

{"title":"Lignocellulose and polydopamine composite superhydrophobic and photothermal membrane: A green innovative solution for oil/water separation and high-viscosity oil adsorption","authors":"Dongsheng Song , Congcong An , Zhe Zhang, Yu Qiu, Zhimin Zhao, Dingqiang Zheng, Ming Zhang","doi":"10.1016/j.ijbiomac.2025.145685","DOIUrl":null,"url":null,"abstract":"<div><div>A superhydrophobic CNF/PDA composite membrane has been developed to revolutionize oily wastewater treatment for achieving high efficiency, cost-effectiveness, and environmental sustainability. Inspired by the adhesive properties of mussels and the self-cleaning mechanism of lotus leaves, this innovative material is fabricated through a novel lyophilization and spray modification process using cellulose nanofibers (CNF), dopamine hydrochloride (DA), and octadecylamine (ODA). The membrane is synthesized via an aerobic, weakly alkaline self-polymerization process, which facilitates the formation of robust covalent and non-covalent bonds between the catecholamine structure of DA and CNF. ODA is integrated through hydrogen bonding and Schiff base reactions with polydopamine (PDA), enhancing structural stability. The resulting membrane demonstrates a tensile strength of 2.9 MPa, alongside exceptional separation efficiency (98.5 %) and flux rates (3745 L·m<sup>−2</sup>·h<sup>−1</sup>). Even after five consecutive water-in-oil (W/O) emulsion separation cycles, a separation efficiency exceeding 91.8 % is maintained, with hydrophobicity and structural integrity preserved. Durability tests confirm its robustness, with 98.5 % of initial capacity retained after ten adsorption-desorption cycles. The membrane's porous architecture and photothermal brown-black hue synergistically boost light-to-heat conversion, facilitating swift thermal response and efficient high-viscosity oil uptake. This demonstrates viable applications as a sustainable solution for oily wastewater treatment, promoting greener industrial application.</div></div>","PeriodicalId":333,"journal":{"name":"International Journal of Biological Macromolecules","volume":"319 ","pages":"Article 145685"},"PeriodicalIF":8.5000,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Biological Macromolecules","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0141813025062403","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"BIOCHEMISTRY & MOLECULAR BIOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

A superhydrophobic CNF/PDA composite membrane has been developed to revolutionize oily wastewater treatment for achieving high efficiency, cost-effectiveness, and environmental sustainability. Inspired by the adhesive properties of mussels and the self-cleaning mechanism of lotus leaves, this innovative material is fabricated through a novel lyophilization and spray modification process using cellulose nanofibers (CNF), dopamine hydrochloride (DA), and octadecylamine (ODA). The membrane is synthesized via an aerobic, weakly alkaline self-polymerization process, which facilitates the formation of robust covalent and non-covalent bonds between the catecholamine structure of DA and CNF. ODA is integrated through hydrogen bonding and Schiff base reactions with polydopamine (PDA), enhancing structural stability. The resulting membrane demonstrates a tensile strength of 2.9 MPa, alongside exceptional separation efficiency (98.5 %) and flux rates (3745 L·m⁻²·h⁻¹). Even after five consecutive water-in-oil (W/O) emulsion separation cycles, a separation efficiency exceeding 91.8 % is maintained, with hydrophobicity and structural integrity preserved. Durability tests confirm its robustness, with 98.5 % of initial capacity retained after ten adsorption-desorption cycles. The membrane's porous architecture and photothermal brown-black hue synergistically boost light-to-heat conversion, facilitating swift thermal response and efficient high-viscosity oil uptake. This demonstrates viable applications as a sustainable solution for oily wastewater treatment, promoting greener industrial application.

查看原文本刊更多论文

木质纤维素和聚多巴胺复合超疏水光热膜：一种绿色创新的油水分离和高粘度油吸附解决方案

一种超疏水CNF/PDA复合膜被开发出来，以彻底改变含油废水处理的效率、成本效益和环境可持续性。受贻贝的粘附特性和荷叶的自清洁机制的启发，这种创新材料是通过纤维素纳米纤维（CNF）、盐酸多巴胺（DA）和十八胺（ODA）通过一种新的冻干和喷雾改性工艺制成的。该膜是通过好氧弱碱性自聚合过程合成的，该过程有助于在DA和CNF的儿茶酚胺结构之间形成坚固的共价键和非共价键。ODA通过氢键和希夫碱反应与聚多巴胺（PDA）结合，增强了结构稳定性。该膜的抗拉强度为2.9 MPa，分离效率为98.5%，通量为3745 L·m−2·h−1。即使在连续5次油包水（W/O）乳液分离循环后，分离效率仍保持在91.8%以上，同时保持了疏水性和结构完整性。耐久性试验证实了其坚固性，在10次吸附-解吸循环后，其初始容量仍保留98.5%。膜的多孔结构和光热棕黑色调协同促进光热转换，促进快速的热响应和高效的高粘度油吸收。这证明了作为含油废水处理的可持续解决方案的可行应用，促进了绿色工业应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

International Journal of Biological Macromolecules 生物-生化与分子生物学

CiteScore

13.70

自引率

9.80%

发文量

2728

审稿时长

64 days

期刊介绍： The International Journal of Biological Macromolecules is a well-established international journal dedicated to research on the chemical and biological aspects of natural macromolecules. Focusing on proteins, macromolecular carbohydrates, glycoproteins, proteoglycans, lignins, biological poly-acids, and nucleic acids, the journal presents the latest findings in molecular structure, properties, biological activities, interactions, modifications, and functional properties. Papers must offer new and novel insights, encompassing related model systems, structural conformational studies, theoretical developments, and analytical techniques. Each paper is required to primarily focus on at least one named biological macromolecule, reflected in the title, abstract, and text.