Lee Byeongho, Kim Choonsoo
Department of Environmental Engineering with Institute of Energy/Environment Convergence Technologies and of Future Convergence Engineering, Kongju National University, 1223-24, Cheonan-daero, Cheonan-si, 31080, Republic of Korea.
Chemphyschem. 2024 Dec 16;25(24):e202400662. doi: 10.1002/cphc.202400662. Epub 2024 Oct 27.
Graphene oxide (GO) membranes have gained significant attention as a promising material for separation by selective permeation processes due to their advantageous structural and chemical properties, including high water permeability, chemical resistance, and mechanical strength. In this study, we explore the potential applications of GO membranes in pervaporation to separate liquid mixtures. The layered structure and hydrophilic nature of GO membrane facilitate rapid and selective water transport through angstrom-scale interlayer spacings, resulting in superior performance over conventional polymeric and inorganic membranes. The unique mass transport mechanisms - slip flow and molecular alignment - enable GO membranes to selectively permeate water over organic solvents. For chemical dehydration, GO membranes are the most potential candidates. Furthermore, advancements in composite GO membranes and cross-linking techniques that improve their stability and separation performance are discussed. This study highlights the advantages of GO membranes and their potential to replace or complement existing technologies, by emphasizing their role in advancing membrane-based separation and promoting environmental sustainability. Future research is expected to optimize the fabrication techniques for GO membranes and expand their application scope.
氧化石墨烯（GO）膜因其具有诸如高透水性、耐化学性和机械强度等有利的结构和化学性质，作为一种通过选择性渗透过程进行分离的有前途的材料而备受关注。在本研究中，我们探索了GO膜在渗透汽化中分离液体混合物的潜在应用。GO膜的层状结构和亲水性有助于水通过埃级的层间距进行快速且选择性的传输，从而使其性能优于传统的聚合物膜和无机膜。独特的传质机制——滑流和分子排列——使GO膜能够选择性地让水透过而不是有机溶剂。对于化学脱水而言，GO膜是最具潜力的候选材料。此外，还讨论了复合GO膜以及提高其稳定性和分离性能的交联技术的进展。本研究强调了GO膜的优势及其替代或补充现有技术的潜力，突出了它们在推进基于膜的分离和促进环境可持续性方面的作用。预计未来的研究将优化GO膜的制备技术并扩大其应用范围。
