高等学校化学学报

高等学校化学学报

• 研究论文 • 上一篇    下一篇

内置苯基桥接开关强化了多孔芳香骨架材料的油水分离性能

马  硕1,2, 陈士欣1,2, 夏春龙3, 周鸿飞3, 李  丛3, 白伟桦4, 崔  博5, 郑桂月5, 布乃顺1,2, 何  哲1,2   

  1. 1. 辽宁大学司法鉴定研究院 2. 辽宁大学环境学院 3. 辽宁省抚顺水文局 4. 辽宁省河库管理服务中心 5. 辽宁大学化学院
  • 收稿日期:2025-03-17 修回日期:2025-06-18 网络首发:2025-06-20 发布日期:2025-06-20
  • 通讯作者: 布乃顺 E-mail:bunaishun@lnu.edu.cn
  • 基金资助:
    国家自然科学基金(批准号：31972522),、抚顺市水务局政府服务项目(批准号：JH24-210400-00444)、辽宁省教育厅高校基本科研项目、沈阳市科技局社会治理科技专项、辽宁大学基本科研项目和辽宁大学大学生创新创业训练计划项目资助

The Built-in Phenyl Bridging Switch Enhances the Oil-Water Separation Performance of Porous Aromatic Framework Material

MA Shuo1,2,  CHEN Shixin1,2,  XIA Chunlong3,  ZHOU Hongfei3,  LI Cong3,  BAI Weihua4,  CUI Bo5,  ZHENG Guiyue5,  BU Naishun1,2,  HE Zhe1,2   

  1. 1.Institute of Forensic Institution, Liaoning University 2.College of Environment, Liaoning University  3.Fushun Hydrological Bureau of Liaoning Province 4.Liaoning River and Reservoir Management Service Center  5.College of Chemistry, Liaoning University
  • Received:2025-03-17 Revised:2025-06-18 Online First:2025-06-20 Published:2025-06-20
  • Contact: Nai-Shun BU E-mail:bunaishun@lnu.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.31972522), the Fushun Water Affairs Bureau Government Service Project (No.JH24-210400-00444), the Liaoning Provincial Department of Education Basic Scientific Research Project for Universities, the Shenyang Science and Technology Bureau Social Governance Science and Technology Special Project, the Liaoning University Fundamental Research Program, the Liaoning University Undergraduate Innovation and Entrepreneurship Training Program

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摘要： 超疏水多孔芳香骨架材料能有效实现油水分离, 在处理石油污水中具有良好应用前景, 其微腔强大毛细管作用被证实是有效容器, 但相对较小的孔道空间导致吸附能力有限. 本研究通过在咔唑基多孔芳香骨架中引入额外的苯基片段作为桥接开关(π - π交联桥), 制备了超疏水多孔芳香骨架材料(LNU-42), 成功增大了材料的孔径. 结果表明, 相较于未引入苯基桥开关的咔唑基超疏水多孔芳香骨架材料(LNU-40), 内置苯基桥接开关使LNU-42孔径扩大了6-8倍, 显著增加了对有机溶剂的容纳空间, 负载LNU-42后的织物对氯苯吸附量达到自身重量的7.8倍, 吸附性能提高了66%, 对氯苯、四氯化碳等有机溶剂的分离效率超过90%. 值得注意的是, 在强酸/碱性(1 mol L-1)和高盐浓度(1 mol L-1)等较为严苛环境条件下, LNU-42仍能保持较强的疏水性. 本研究为制备具有高效油水分离性能的超疏水材料提供了适宜的技术路径, 并为处理石油污水提供科技支撑.

关键词: 超疏水多孔芳香骨架材料, 内置苯基桥接开关; Suzuki反应; 油水分离性能

Abstract: Superhydrophobic porous aromatic framework materials have demonstrated remarkable potential in efficiently achieving oil-water separation, thereby holding great promise for their application in treating oilfield wastewater. The robust capillary action within their microcavities has been verified to serve as an effective containment mechanism. Nevertheless, the relatively constricted pore space poses a limitation on their adsorption capacity. In this research endeavor, by ingeniously incorporating additional phenyl fragments as bridging switches (π-π cross-linking bridges) into the carbazole-based porous aromatic framework, we successfully synthesized a novel superhydrophobic porous aromatic material, denoted as LNU-42, and significantly enlarged its pore size. Experimental results reveal that, in contrast to the carbazole-based superhydrophobic porous aromatic material LNU-40, which lacks the phenyl-bridge switches, the introduction of these built-in phenyl-bridging switches has led to a 6-8-fold expansion in the pore size of LNU-42. This substantial increase has notably augmented the accommodation space for organic solvents. Specifically, the fabric impregnated with LNU-42 exhibits an outstanding adsorption capacity for chlorobenzene, reaching up to 7.8 times its own weight, representing a 66% enhancement in adsorption performance. Moreover, the separation efficiency of LNU-42 for organic solvents such as chlorobenzene and carbon tetrachloride surpasses 90%. Notably, LNU-42 demonstrates remarkable stability, maintaining its strong hydrophobicity even under extremely harsh environmental conditions, including strong acid/alkali (1 mol L?1) and high-salt concentration (1 mol L?1). This study not only furnishes a viable technical approach for the fabrication of superhydrophobic materials with high-efficiency oil-water separation capabilities but also offers crucial scientific and technological underpinnings for the treatment of oilfield wastewater.

Key words: Superhydrophobic porous aromatic framework materials, Built-in phenyl bridging switch, Suzuki reaction, Oil-water separation performance

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