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氧化石墨烯对银纳米颗粒的抗氧化作用及其在抗菌应用中的用途。

Antioxidation Effect of Graphene Oxide on Silver Nanoparticles and Its Use in Antibacterial Applications.

作者信息

Jin Hua, Cai Mengyao, Deng Fuquan

机构信息

School of Design and Innovation, Wenzhou Polytechnic, Wenzhou 325000, China.

College of Art and Design, Shaanxi University of Science and Technology, Xi'an 710021, China.

出版信息

Polymers (Basel). 2023 Jul 14;15(14):3045. doi: 10.3390/polym15143045.

DOI:10.3390/polym15143045
PMID:37514433
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10386249/
Abstract

Silver nanoparticles (AgNPs) have drawn great attention due to their outstanding antibacterial effect in a wide range of applications, such as biomass packaging materials, wound dressings, flexible sensors, etc. However, the oxidation of AgNPs limits the antibacterial effect. Firstly, the effects of pretreatment methods on the antibacterial property of AgNPs were investigated by the shake flask method and agar diffusion plate method. Secondly, graphene oxide/silver nanoparticle (GO/AgNPs) nanocomposite prepared by an in-situ growth method was used as antibacterial filler for polyacrylate emulsion via a blending method. The antibacterial mechanism of GO/AgNPs was revealed by comparing the actual contents of oxygen with the theoretically calculated contents of oxygen. Finally, the polyacrylate/graphene oxide/silver nanoparticles (PA/GO/AgNPs) composite emulsion was applied onto a leather surface using a layer-by-layer spraying method to improve the leather's antibacterial properties. The results showed that ultraviolet irradiation could better maintain the antibacterial property of AgNPs, while GO could improve the dispersibility of AgNPs and prevent their oxidation. The leather finished with the PA/GO/AgNPs-2 wt% composite emulsion showed the highest bacteriostatic rate of 74%, demonstrating its great potential in the application of antibacterial leather products.

摘要

银纳米颗粒（AgNPs）因其在生物质包装材料、伤口敷料、柔性传感器等广泛应用中具有出色的抗菌效果而备受关注。然而，AgNPs的氧化限制了其抗菌效果。首先，通过摇瓶法和琼脂扩散平板法研究了预处理方法对AgNPs抗菌性能的影响。其次，采用原位生长法制备的氧化石墨烯/银纳米颗粒（GO/AgNPs）纳米复合材料通过共混法用作聚丙烯酸酯乳液的抗菌填料。通过比较氧的实际含量与理论计算含量揭示了GO/AgNPs的抗菌机制。最后，采用逐层喷涂法将聚丙烯酸酯/氧化石墨烯/银纳米颗粒（PA/GO/AgNPs）复合乳液涂覆在皮革表面，以提高皮革的抗菌性能。结果表明，紫外线照射能更好地保持AgNPs的抗菌性能，而GO能提高AgNPs的分散性并防止其氧化。用含2 wt% PA/GO/AgNPs复合乳液整理的皮革显示出最高74%的抑菌率，表明其在抗菌皮革产品应用中具有巨大潜力。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ea0/10386249/548481b82603/polymers-15-03045-g011.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ea0/10386249/a5d9f22ce182/polymers-15-03045-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ea0/10386249/548481b82603/polymers-15-03045-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ea0/10386249/7dcafa9d7a14/polymers-15-03045-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ea0/10386249/32fdd37c9972/polymers-15-03045-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ea0/10386249/cfde0880c2f9/polymers-15-03045-g003.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ea0/10386249/4b75631b0af5/polymers-15-03045-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ea0/10386249/3794ff3d8406/polymers-15-03045-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ea0/10386249/fcd0bebc1aec/polymers-15-03045-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ea0/10386249/736636d3df79/polymers-15-03045-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ea0/10386249/a5d9f22ce182/polymers-15-03045-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ea0/10386249/548481b82603/polymers-15-03045-g011.jpg

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