Chen Cheng, Shen Liguo, Lin Hongjun, Zhao Dieling, Li Bisheng, Chen Banglin
College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China.
Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Sciences, Zhejiang Normal University, Jinhua 321004, China.
Chem Soc Rev. 2024 Mar 4;53(5):2738-2760. doi: 10.1039/d3cs00866e.
Hydrogen-bonded organic frameworks (HOFs) are a new class of crystalline porous materials that are formed through the interconnection of organic or metal-organic building units intermolecular hydrogen bonds. The remarkable flexibility and reversibility of hydrogen bonds, coupled with the customizable nature of organic units, endow HOFs with mild synthesis conditions, high crystallinity, solvent processability, and facile self-healing and regeneration properties. Consequently, these features have garnered significant attention across various fields, particularly in the realm of membrane separation. Herein, we present an overview of the recent advances in HOF-based membranes, including their advanced fabrication strategies and fascinating applications in membrane separation. To attain the desired HOF-based membranes, careful consideration is dedicated to crucial factors such as pore size, stability, hydrophilicity/hydrophobicity, and surface charge of the HOFs. Additionally, diverse preparation methods for HOF-based membranes, including blending, growth, solution-processing, and electrophoretic deposition, have been analyzed. Furthermore, applications of HOF-based membranes in gas separation, water treatment, fuel cells, and other emerging application areas are presented. Finally, the challenges and prospects of HOF-based membranes are critically pointed out.
氢键有机框架（HOFs）是一类新型的晶体多孔材料，通过有机或金属有机构筑单元之间的分子间氢键相互连接而成。氢键具有显著的灵活性和可逆性，再加上有机单元的可定制性，赋予了HOFs温和的合成条件、高结晶度、溶剂可加工性以及易于自愈和再生的特性。因此，这些特性在各个领域都引起了广泛关注，尤其是在膜分离领域。在此，我们概述了基于HOF的膜的最新进展，包括其先进的制备策略以及在膜分离中的迷人应用。为了获得理想的基于HOF的膜，需要仔细考虑诸如HOFs的孔径、稳定性、亲水性/疏水性和表面电荷等关键因素。此外，还分析了基于HOF的膜的多种制备方法，包括共混、生长、溶液处理和电泳沉积。此外，还介绍了基于HOF的膜在气体分离、水处理、燃料电池和其他新兴应用领域的应用。最后，批判性地指出了基于HOF的膜面临的挑战和前景。
