高等学校化学学报2025，Vol.46Issue(11)：143-153,11.DOI:10.7503/cjcu20250215
直接MOF化诱导电活性高透气聚乳酸Janus纳纤滤膜
Highly Electroactive and Permeable Janus Filter Membranes by Direct MOF Functionalization of PLA Nanofibers
摘要
Abstract
Developing high-performance air filtration materials is of great significance in the increasingly harsh air environment.In this study,nanocrystalline metal-organic framework-801(MOF-801)was efficiently and controllably prepared via microwave-assisted synthesis.Subsequently,an electrospinning-electrospray strategy was employed to anchor the MOF-801 nanocrystals onto the surface of poly(lactic acid)(PLA)fibers while designing a unique Janus structure.The high-dielectric MOF-801 nanocrystals significantly enhanced the electret effect of PLA fibers,imparting high dielectric constant(2.5)and initial surface potential(5.6 kV)to the PLA fibrous membrane,along with excellent charge storage and regeneration capabilities.The Janus structure exhibits synergistic effects of multiple filtration mechanisms,enabling hierarchical capture of particulate matters(PMs)with different particle sizes.Even under the highest airflow rate(85 L/min),the J-PLA/MOF fibrous membrane achieved ultra-high PM0.3 filtration efficiency(96.4%)and low air resistance(121.5 Pa).Additionally,under a differential pressure of 100 Pa,compared to the low air permeability(102.2 mm/s)exhibited by Normal PLA,the air permeability rate of the J-PLA/MOF fibrous membrane could reach up to 225.1 mm/s.Due to the anchoring of an appropriate amount of highly surface-active MOF-801 nanocrystals,the mechanical properties of the J-PLA/MOF fibrous membrane were improved,with tensile strength and Young's modulus reaching as high as 4.7 MPa and 100.3 MPa,respectively.The J-PLA/MOF biodegrad-able fibrous membranes designed in this study held great potential for applications in ultrafine PMs filtration.关键词
超细颗粒物/聚乳酸纤维/金属有机框架化/Janus结构/透气性Key words
Ultrafine particulate matter/Poly(lactic acid)fiber/Metal-organic framework functionalization/Janus structure/Air permeability分类
化学引用本文复制引用
张龙,张生辉,马良,徐超,吴洋,高娜,汪少振,李欣雨,王存民,徐欢..直接MOF化诱导电活性高透气聚乳酸Janus纳纤滤膜[J].高等学校化学学报,2025,46(11):143-153,11.基金项目
国家重点研发计划项目(批准号:2024YFC3015003,2023YFC3011704)、国家能源集团重点科技攻关项目(批准号:E210100285)、中国矿业大学研究生创新计划项目(批准号:2024WLKXJ140,2024WLJCRCZL276,2024WLKXJ143,2024WLJCRCZL272,2024WLJCRCZL195)和中央高校基本科研业务费专项资金(批准号:2024-10967,2024-10958)资助. Supported by the National Key Research and Development Program,China(Nos.2024YFC3015003,2023YFC3011704),the Key Research and Development Project of CHN Energy Investment Group,China(No.E210100285),the Graduate Innovation Program of China University of Mining and Technology(Nos.2024WLKXJ140,2024WLJCRCZL276,2024WLKXJ143,2024WLJCRCZL272,2024WLJCRCZL195)and the Fundamen-tal Research Funds for the Central Universities,China(Nos.2024-10967,2024-10958). （批准号:2024YFC3015003,2023YFC3011704）
