Rational Process Design for Facile Fabrication of Dual Functional Hybrid Membrane of MOF and Electrospun Nanofiber towards High Removal Efficiency of PM2.5 and Toxic Gases,Macromolecular Rapid Communications

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Rational Process Design for Facile Fabrication of Dual Functional Hybrid Membrane of MOF and Electrospun Nanofiber towards High Removal Efficiency of PM2.5 and Toxic Gases
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2021-12-21 , DOI: 10.1002/marc.202100648
Donghun Kim _{1,

2} , Yoonjin Kim ₂ , Dokun Kim ₂ , Dongwan Son ₃ , Song Jun Doh ₂ , Myungwoong Kim ₃ , Hoik Lee ₂ , Ki Ro Yoon ₂

Affiliation

The application of nanofiber (NF) and porous metal-organic framework (MOF) has increasingly attracted attention for the protection of public health. This composite platform provides the physical sieving of particulate matters (PMs) and capturing gases, serving as an outstanding filtering medium with lightweight and multifunctionality. Herein, process design and optimization are performed to produce a multifunctional membrane comprised NFs and MOF particles. Electrospinning/electrospray techniques are used to fabricate a hybrid membrane of poly(vinyl alcohol) NF and Fe-BTC as an adsorptive MOF on a macroporous nonwoven (NW). Three types of filters are prepared by varying the order of processing steps, that is, MOF/NF/NW, MOF+NF/NW, and NF/MOF/NW, to elucidate the effect of the fabrication process in the filtration of air pollutant. The optimal filtration performance is achieved in MOF+NF/NW system: the highest filtration efficiency (97%) and outstanding gas capturing efficiencies (≈60% and ≈35% decreases from initial NH₃ and H₂S concentrations, respectively). However, when air permeability and filtration efficiency are considered, the most desirable configuration for personal protection equipment (PPE) is NF/MOF/NW system, which effectively enabled comfortable breathing without compromising the lightweight and multifunctional performance.

中文翻译：

MOF 和静电纺丝纳米纤维双功能混合膜的简便制备对 PM2.5 和有毒气体的高去除效率的合理工艺设计

纳米纤维（NF）和多孔金属有机骨架（MOF）的应用在保护公众健康方面越来越受到关注。该复合平台提供颗粒物 (PM) 的物理筛分和捕获气体，是一种具有轻量级和多功能性的出色过滤介质。在此，进行工艺设计和优化以生产包含 NF 和 MOF 颗粒的多功能膜。静电纺丝/电喷雾技术用于制造聚（乙烯醇）NF 和 Fe-BTC 的混合膜作为大孔无纺布 (NW) 上的吸附 MOF。通过改变处理步骤的顺序制备三种类型的过滤器，即MOF/NF/NW、MOF+NF/NW和NF/MOF/NW，以阐明制造工艺在空气污染物过滤中的效果.₃和 H₂ S 浓度）。然而，考虑到透气性和过滤效率，个人防护装备（PPE）最理想的配置是NF/MOF/NW系统，在不影响轻便和多功能性能的情况下，有效地实现了舒适的呼吸。

更新日期：2021-12-21

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