Bifunctional ZIF-8 Grown Webs for Advanced Filtration of Particulate and Gaseous Matters: Effect of Charging Process on the Electrostatic Capture of Nanoparticles and Sulfur Dioxide,ACS Applied Materials & Interfaces

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Bifunctional ZIF-8 Grown Webs for Advanced Filtration of Particulate and Gaseous Matters: Effect of Charging Process on the Electrostatic Capture of Nanoparticles and Sulfur Dioxide
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2021-10-12 , DOI: 10.1021/acsami.1c15734
Jinwook Lee ₁ , Seojin Jung ₁ , Hanjou Park ₁ , Jooyoun Kim _{1,

2}

Affiliation

Metal–organic framework (MOF), an emerging class of porous hybrid inorganic–organic crystals, has been applied for various environmental remediation strategies including liquid and air filtration. In this study, the role of the zeolite imidazole framework-8 (ZIF-8) was explored on the charge trapping ability and its contribution to capturing the targeted pollutants of NaCl nanoparticles and SO₂ gas. Poly(lactic acid) fibers with controlled surface pores were electrospun using water vapor-induced phase separation, and the fiber surface was uniformly coated with ZIF-8 crystals via an in situ growth method. As a novel process approach, the corona charging process was applied to the ZIF-8 grown webs. The ZIF-8 promoted the charge trapping in the corona process, and the charged ZIF-8 web showed a significantly improved electrostatic filtration efficiency. Also, the charged ZIF-8 web showed an enhanced SO₂ capture ability, both in the static and dynamic air flow states, demonstrating the applicability as a bifunctional filter for both particulate and gaseous matters. The approach of this study is novel in that both particulate and gas capture capabilities were associated with the charge trapping ability of ZIF-8, implementing the corona charging process to the ZIF-8 webs.

中文翻译：

用于颗粒和气体物质高级过滤的双功能 ZIF-8 生长网：充电过程对纳米颗粒和二氧化硫的静电捕获的影响

金属-有机骨架（MOF）是一类新兴的多孔杂化无机-有机晶体，已应用于各种环境修复策略，包括液体和空气过滤。在这项研究中，沸石咪唑骨架-8 (ZIF-8) 在电荷捕获能力方面的作用及其对捕获 NaCl 纳米颗粒和 SO ₂气体的目标污染物的贡献进行了探索。使用水蒸气诱导相分离电纺具有受控表面孔隙的聚乳酸纤维，并通过原位均匀涂覆 ZIF-8 晶体生长法。作为一种新的工艺方法，电晕充电工艺应用于 ZIF-8 生长的网。ZIF-8 促进了电晕过程中的电荷捕获，带电的 ZIF-8 网显示出显着提高的静电过滤效率。此外，带电的 ZIF-8 网在静态和动态空气流动状态下均显示出增强的 SO ₂捕获能力，证明了其作为颗粒物和气态物质的双功能过滤器的适用性。这项研究的方法是新颖的，因为颗粒和气体捕获能力都与 ZIF-8 的电荷捕获能力相关，从而对 ZIF-8 网实施电晕充电过程。

更新日期：2021-10-27

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