High-Efficiency Broad-Spectrum Antibacterial Activity of Chitosan/Zinc Ion/Polyoxometalate Composite Films for Water Treatment

IF 3.9 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Langmuir Pub Date : 2024-12-10 DOI:10.1021/acs.langmuir.4c03784

Zhe Ji, Mengle Liang, Chun Wang, Min Ma, Jiale Tian, Yue Su, Haibo Chang, Mingxue Li

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Abstract

The development of multifunctional films with rapidly killing microorganisms and adsorbing residual antibiotics in wastewater remains a challenging endeavor. In this work, the chitosan/zinc ion/polyoxometalate (CS/Zn²⁺/POM) multifunctional films were prepared by the freeze-drying method using chitosan, ZnO, and POM. Notably, the CS/Zn²⁺/POM films exhibited excellent bactericidal properties against Gram-positive/negative bacterial strains including Staphylococcus aureus (S. aureus, 99.80%), Escherichia coli (E. coli, 99.82%), and drug-resistant E. coli bacterial strains (kanamycin-resistant E. coli, 87.76% and ampicillin-resistant E. coli, 99.71%). This may be due to the chelation of Zn²⁺ with CS disrupting the cell membrane and bringing POM into direct contact with bacteria, leading to bacterial death. In addition, the CS/Zn²⁺/POM films showed good adsorption performance to a tetracycline (TC) solution (adsorption rate 75.2%). Further studies showed that the main process of tetracycline removal by CS/Zn²⁺/POM films was controlled by a physical adsorption. This POM-based film material has an important potential for the synthesis of broad-spectrum antimicrobial materials for the removal of residual antibiotics from water pollutants such as tetracycline.

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壳聚糖/锌离子/多金属酸氧酯复合水处理膜的高效广谱抗菌活性研究

开发具有快速杀灭微生物和吸附废水中残留抗生素的多功能膜仍然是一项具有挑战性的工作。本文以壳聚糖、ZnO和POM为原料，采用冷冻干燥法制备了壳聚糖/锌离子/多金属氧酸盐（CS/Zn2+/POM）多功能薄膜。值得注意的是，CS/Zn2+/POM薄膜对革兰氏阳性/阴性菌株，包括金黄色葡萄球菌（金黄色葡萄球菌，99.80%）、大肠杆菌（大肠杆菌，99.82%）和耐药大肠杆菌（卡那霉素耐药大肠杆菌，87.76%，氨苄西林耐药大肠杆菌，99.71%）均表现出优异的杀菌性能。这可能是由于Zn2+与CS的螯合作用破坏了细胞膜，使POM与细菌直接接触，导致细菌死亡。此外，CS/Zn2+/POM膜对四环素（TC）溶液具有良好的吸附性能，吸附率为75.2%。进一步研究表明，CS/Zn2+/POM膜去除四环素的主要过程由物理吸附控制。这种基于pom的膜材料在合成广谱抗菌材料以去除四环素等水污染物中的残留抗生素方面具有重要的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Langmuir 化学-材料科学：综合

CiteScore

6.50

自引率

10.30%

发文量

1464

审稿时长

2.1 months

期刊介绍： Langmuir is an interdisciplinary journal publishing articles in the following subject categories: Colloids: surfactants and self-assembly, dispersions, emulsions, foams Interfaces: adsorption, reactions, films, forces Biological Interfaces: biocolloids, biomolecular and biomimetic materials Materials: nano- and mesostructured materials, polymers, gels, liquid crystals Electrochemistry: interfacial charge transfer, charge transport, electrocatalysis, electrokinetic phenomena, bioelectrochemistry Devices and Applications: sensors, fluidics, patterning, catalysis, photonic crystals However, when high-impact, original work is submitted that does not fit within the above categories, decisions to accept or decline such papers will be based on one criteria: What Would Irving Do? Langmuir ranks #2 in citations out of 136 journals in the category of Physical Chemistry with 113,157 total citations. The journal received an Impact Factor of 4.384*. This journal is also indexed in the categories of Materials Science (ranked #1) and Multidisciplinary Chemistry (ranked #5).