Humidity-resistant air filtration and passive respiratory sensing by direct metal–organic framework functionalization and nanopore generation at electroactive poly(lactic acid) nanofibers

IF 7.4 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering Pub Date : 2025-03-19 DOI:10.1016/j.jece.2025.116214

Xinjian He , Yuyang Chen , Ruizi Chen , Yifan Zhang , Shihang Li , Jiang Shao , Xiaoyu Chen , Mingming Zhang , Shenghui Zhang , Long Zhang , Jiefeng Gao , Huan Xu

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引用次数: 0

Abstract

The development of ecofriendly poly(lactic acid) (PLA) nanofibrous membranes (NFMs) is of important significance to settle down the rapidly rising airborne PM crisis and plastic pollutions, but suffering from the bottlenecks in terms of the relatively low surface activity, poor electret properties and fiber refinement. This work unraveled an effective approach for MOF functionalization and nanopore creation at PLA nanofibers by the modified electrospinning–electrospray technique, combined with electro-induced stereocomplexation (EIS) principles to enhance surface activity, electroactivity, and electret properties of PLA NFMs. The proposed PLA NFMs presented superior PM_0.3 capturing efficiency (95.91 % at 30 % RH, 88.01 % at 90 % RH), humidity resistance and breathability (40.3 Pa at 32 L/min). Benefiting from the triboelectric nanogenerator mechanisms, the PLA NFMs enabled long-term efficient filtration and permitted multifunctional applications like passive respiratory monitoring and voice recognition, appealing for human-machine interactions while providing efficient healthcare.

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基于电活性聚乳酸纳米纤维的金属有机框架功能化和纳米孔生成的抗湿空气过滤和被动呼吸传感

生态友好型聚乳酸（PLA）纳米纤维膜（NFMs）的开发对于解决快速上升的空气PM危机和塑料污染具有重要意义，但其表面活性相对较低、驻极体性能差、纤维精细化等方面存在瓶颈。这项工作揭示了一种有效的方法，通过改进的电纺丝-电喷雾技术，结合电诱导立体络合（EIS）原理，在PLA纳米纤维上实现MOF功能化和纳米孔的形成，以提高PLA nfm的表面活性、电活性和驻极体性能。所提出的PLA nfm具有优异的PM0.3捕获效率（在30 % RH时为95.91 %，在90 % RH时为88.01 %），耐湿性和透气性（在32 L/min时为40.3 Pa）。得益于摩擦电纳米发电机机制，PLA nfm实现了长期高效过滤，并允许被动呼吸监测和语音识别等多功能应用，在提供高效医疗保健的同时吸引人机交互。

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来源期刊

Journal of Environmental Chemical Engineering Environmental Science-Pollution

CiteScore

11.40

自引率

6.50%

发文量

2017

审稿时长

27 days

期刊介绍： The Journal of Environmental Chemical Engineering (JECE) serves as a platform for the dissemination of original and innovative research focusing on the advancement of environmentally-friendly, sustainable technologies. JECE emphasizes the transition towards a carbon-neutral circular economy and a self-sufficient bio-based economy. Topics covered include soil, water, wastewater, and air decontamination; pollution monitoring, prevention, and control; advanced analytics, sensors, impact and risk assessment methodologies in environmental chemical engineering; resource recovery (water, nutrients, materials, energy); industrial ecology; valorization of waste streams; waste management (including e-waste); climate-water-energy-food nexus; novel materials for environmental, chemical, and energy applications; sustainability and environmental safety; water digitalization, water data science, and machine learning; process integration and intensification; recent developments in green chemistry for synthesis, catalysis, and energy; and original research on contaminants of emerging concern, persistent chemicals, and priority substances, including microplastics, nanoplastics, nanomaterials, micropollutants, antimicrobial resistance genes, and emerging pathogens (viruses, bacteria, parasites) of environmental significance.