Functional liquid layer enabled superior performance of air purification filter

IF 19.1 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Chem Pub Date : 2025-04-04 DOI:10.1016/j.chempr.2025.102526

Qifei Wang, Yuheng Sheng, Xiaowei Song, Yuchen Qiu, Xiao Li, Chao Shang, Yang Wang, Jihong Yu

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Abstract

Particulate air contaminations adversely impact the public and have thereby prompted the development of air purification systems. Herein, we show a novel liquid-mediated purification system (LMS) based on a core-shell liquid-mediated membrane filter for high-efficient capture of almost all hazardous airborne particles. This system overcomes the unavoidable instability and fouling/clogging problems of conventional filtering systems, driven by unstable surface attractive sites (e.g., electrostatic charges). The optimized liquid layer in LMS (e.g., glycerol) affords strong surface tension effect and high particle detachment energy to enable an integrated three-step particle-capturing process (particle attraction, adhesion, and retention), achieving an overall outperforming filtration efficiency over 99% without resistance increase within 3 months usage. Such a liquid-interface-guided purification strategy performs judicious combinability and adjustability with the liquid layer acting as the primary filtering layer, promoting the development of universal, highly effective, environmentally friendly, and cost-effective air purification.

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空气微粒污染对公众造成了不利影响，因此促使人们开发空气净化系统。在此，我们展示了一种基于核壳液体介导膜过滤器的新型液体介导净化系统（LMS），可高效捕获几乎所有有害的空气颗粒。该系统克服了传统过滤系统不可避免的不稳定性和污垢/堵塞问题，这些问题是由不稳定的表面吸引点（如静电荷）造成的。LMS 中的优化液层（如甘油）具有较强的表面张力效应和较高的颗粒分离能，可实现一体化的三步颗粒捕获过程（颗粒吸引、粘附和滞留），在 3 个月的使用期内，可实现超过 99% 的整体超优过滤效率，且不会增加阻力。这种以液体表面为导向的净化策略可进行合理的组合和调整，液体层作为主要过滤层，促进了通用、高效、环保和高性价比空气净化技术的发展。

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来源期刊

Chem Environmental Science-Environmental Chemistry

CiteScore

32.40

自引率

1.30%

发文量

281

期刊介绍： Chem, affiliated with Cell as its sister journal, serves as a platform for groundbreaking research and illustrates how fundamental inquiries in chemistry and its related fields can contribute to addressing future global challenges. It was established in 2016, and is currently edited by Robert Eagling.