Biodegradable air filter with electrospun composite nanofibers and cellulose fibers dual network: Enhanced electrostatic adsorption, humidity resistance, and extended service life

IF 12.2 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Journal of Hazardous Materials Pub Date : 2025-02-10 DOI:10.1016/j.jhazmat.2025.137557

Jingyi Nie, Binrong Sun, Tingting Jiao, Jianfei Liao, Meiyun Zhang, Ruiting Yang, Yueqing Li

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引用次数: 0

Abstract

Cellulose-based materials have great potential as degradable air filters. Regretfully, the application is limited by their low electrostatic adsorption and hydrophilicity. To meet with the challenge, we designed a composite air filter with dual network. Composite cellulose acetate nanofibers were electrospun on a cellulose-fibers paper substrate, and the resulted multi-scale spider-web-like structure showed high filtration efficiency as well as low resistance. Electrets (silicon nitride and tourmaline) were composited to enhance the electrostatic adsorption for PMs. Hydrophobic modification improved the ability to retain electrostatic charge, promoting the filtration under humid environment. The filtration efficiency for PM_0.3 exceeded 99 %, while the pressure drop was only 45.7 Pa. The filtration performance could be maintained for over 12 hours under 90 % relative humidity, and the filter could be completely degraded in natural environment within 80 days.

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来源期刊

Journal of Hazardous Materials 工程技术-工程：环境

CiteScore

25.40

自引率

5.90%

发文量

3059

审稿时长

58 days

期刊介绍： The Journal of Hazardous Materials serves as a global platform for promoting cutting-edge research in the field of Environmental Science and Engineering. Our publication features a wide range of articles, including full-length research papers, review articles, and perspectives, with the aim of enhancing our understanding of the dangers and risks associated with various materials concerning public health and the environment. It is important to note that the term "environmental contaminants" refers specifically to substances that pose hazardous effects through contamination, while excluding those that do not have such impacts on the environment or human health. Moreover, we emphasize the distinction between wastes and hazardous materials in order to provide further clarity on the scope of the journal. We have a keen interest in exploring specific compounds and microbial agents that have adverse effects on the environment.