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Bio‐Based Antimicrobial Ionic Materials Fully Composed of Natural Products for Elevated Air Purification
Advanced Sustainable Systems ( IF 7.1 ) Pub Date : 2020-05-11 , DOI: 10.1002/adsu.202000046
You Wang 1 , Wen‐Li Yuan 1 , Lei Zhang 1 , Zhang Zhang 1 , Guo‐Hao Zhang 1 , Shuang‐Long Wang 1 , Ling He 1 , Guo‐Hong Tao 1
Affiliation  

Air pollution, including particulate matter (PM) and microorganism aerosol, is a severe problem due to its high pathogenicity. In this study, bio‐based ionic polymers derived from alginate are prepared and employed as antimicrobial filter materials. Among them, fully bio‐based cholinium alginate material exhibits the optimal antimicrobial activity and PM removal performance (99.69% for PM2.5 removal efficiency, 99.89% for PM10 removal efficiency, pressure drop below 2 Pa, and 2.8882 for quality factor (QF)). The antimicrobial activity of cholinium alginate is dramatically promoted compared with that of the raw material sodium alginate. Density function theory (DFT) studies further confirm that cholinium can electrostatically bind with anionic components on Gram‐negative bacterial cell membranes to enable sterilization. Moreover, the performance of cholinium alginate material under practical condition outperforms commercial masks. This work will provide an effective approach to develop promising green antimicrobial materials for environmental decontamination.

中文翻译:

完全由天然产物组成的生物基抗菌离子材料,可提高空气净化

由于其高致病性,包括颗粒物(PM)和微生物气溶胶在内的空气污染是一个严重的问题。在本研究中,制备了藻酸盐衍生的生物基离子聚合物并将其用作抗菌过滤材料。其中,完全基于生物的藻酸胆碱材料表现出最佳的抗菌活性和PM去除性能(PM 2.5去除效率为99.69 %,PM 10去除率为99.89%去除效率,压降低于2 Pa,品质因数(QF)为2.8882)。与原材料海藻酸钠相比,藻酸胆碱的抗菌活性得到了显着提高。密度泛函理论(DFT)的研究进一步证实,胆碱可以与革兰氏阴性细菌细胞膜上的阴离子成分静电结合,从而实现杀菌作用。此外,藻酸胆碱材料在实际条件下的性能优于市售口罩。这项工作将为开发用于环境净化的绿色抗菌材料提供有效的方法。
更新日期:2020-05-11
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