用微波等离子超快合成 ZnO 纳米棒生产散装 ZnO 用于抗菌消除钩端螺旋体病,ACS Applied Nano Materials

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用微波等离子超快合成 ZnO 纳米棒生产散装 ZnO 用于抗菌消除钩端螺旋体病
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2022-03-01 , DOI: 10.1021/acsanm.2c00579
Kittikhun Khotmungkhun ₁ , Wasitthi Chaengsawang ₁ , Toemsak Srikhirin ₁ , Rungtiva P. Poo-arporn ₂ , Galayanee Doungchawee ₃ , Kittitat Subannajui ₁

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利用微波等离子体成功合成了氧化锌（ZnO）纳米棒，并以此为原料制成块状氧化锌，可以在不污染环境的情况下消除细菌。微波等离子体使金属锌离子化，而锌离子被迅速氧化并在有限区域内沉积为 ZnO 纳米棒。随后，通过烧结方法将 ZnO 纳米棒组合成 ZnO 块体。虽然外观与陶瓷岩石相同，但块状 ZnO 包含均匀的内部亚微米结构。用革兰氏阳性（葡萄球菌）和革兰氏阴性（大肠杆菌）证实了烧结块状氧化锌的抗菌效率）细菌。与 ZnO 纳米棒粉末不同，由于块状 ZnO 可以放置在水中而不会分散或污染水，因此适合用于特定应用，例如在静水中杀死细菌。东南亚的一种细菌存在于采伐的水中，是钩端螺旋体，它是人类和动物钩端螺旋体病的主要原因。因此，研究了烧结块状 ZnO 对消除钩端螺旋体的优异抗菌效果。结果表明，块状 ZnO 在不以纳米结构形式使用的情况下具有生物医学应用的潜力。

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Bulk ZnO Produced from Ultrafast Synthesis of ZnO Nanorods by Microwave Plasma for Antimicrobial Elimination of Leptospirosis

Zinc oxide (ZnO) nanorods are successfully synthesized by the microwave plasma and used as a raw material for making a bulk ZnO which can eliminate bacteria without contaminating the environment. Microwave plasma ionizes metallic zinc, while zinc ions are rapidly oxidized and deposited as ZnO nanorods in a confined area. Later on, ZnO nanorods are combined into a ZnO bulk by the sintering method. Although the outer appearance was the same as a ceramics rock, bulk ZnO contains a homogeneous internal submicron structure. The antimicrobial efficiency of sintered bulk ZnO was confirmed with both Gram-positive (Staphylococcus) and Gram-negative (Escherichia coli) bacteria. Unlike ZnO nanorod powder, since bulk ZnO can be placed in the water without dispersing or contaminating water, it was suitable to be used for specific application such as killing the bacteria in still water. One of the bacteria in Southeast Asia which resides in the logged water is Leptospira which is a major cause of leptospirosis in both humans and animals. Therefore, the excellent antimicrobial effect on Leptospira elimination by sintered bulk ZnO was examined. The results show that the bulk ZnO has a potential for biomedical application without being used in the nanostructure form.

更新日期：2022-03-01

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