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Nanocopper-loaded Black phosphorus nanocomposites for efficient synergistic antibacterial application

机译：纳米泊孔加载的黑色磷纳米复合材料，用于高效协同抗菌应用

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摘要

Novel nanocopper-loaded black phosphorus (BP/Cu) nanocomposites were synthesized to synergistically exert enhanced antibacterial activities aimed at reducing antibiotics abuse. First, both BP and Cu display low biotoxicity, broadening their application in the microbiological field. Second, the unique electronic properties of BP enable BP/Cu nanocomposites to amplify antibacterial effects via interfacial charge transfer, resulting in a surge of reactive oxygen species (ROS). Third, BP/Cu nanocomposites are relatively stable, which helps to avoid the problem that nanocopper alone is highly oxidized. Finally, BP/Cu was synthesized in an environmentally-friendly manner by a one-step reduction method. The BP/Cu nanocomposites were characterized by transmission electron microscopy and atomic force microscopy. Their antibacterial properties were investigated comprehensively and discussed in detail by inhibition zone assays, dynamic growth curves, membrane potential assays, and live/dead baclight bacterial viability assays, all of which revealed the antimicrobial activities of BP/Cu nanocomposites. Absorption spectra were measured to determine which ROS species were responsible for the bactericidal mechanisms. In summary, our results demonstrated the potential of nanocomposites based on BP in antibacterial therapy due to its excellent electronic properties and outstanding biological performance. This will pave the way for avoiding antibiotic overuse and for providing security to humans and the environment.
机译：合成了新型纳米泊孔的黑磷（BP / Cu）纳米复合材料以协同发挥增强的抗菌活性，旨在还原抗生素滥用。首先，BP和Cu均显示出低生物毒性，在微生物场中扩大其应用。其次，BP的独特电子性质使BP / Cu纳米复合材料能够通过界面电荷转移扩增抗菌作用，导致反应性氧物质（ROS）的浪涌。第三，BP / Cu纳米复合材料是相对稳定的，这有助于避免单独的纳米泊泊的问题高度氧化。最后，通过一步还原方法以环保方式合成BP / Cu。通过透射电子显微镜和原子力显微镜表征BP / Cu纳米复合材料。通过抑制区测定，动态生长曲线，膜电位测定和活/死Bachight细菌活力测定，全面地研究了它们的抗菌性能，并揭示了所有这些，所有这些都揭示了BP / Cu纳米复合材料的抗微生物活性。测量吸收光谱以确定哪些ROS物种对杀菌机制负责。总之，我们的结果表明，由于其优异的电子性质和出色的生物学性能，基于BP的抗菌治疗中的纳米复合材料的潜力。这将为避免抗生素过度使用和向人类和环境提供安全性，这将铺平道路。

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  • 来源
    《Journal of Hazardous Materials》 |2020年第jul5期|122317.1-122317.9|共9页
  • 作者

    Zhang Dandan; Liu Hui Ming; Shu XiuLin; Feng Jin; Yang Ping; Dong Peng; Xie XiaoBao; Shi QingShan;

  • 作者单位

    Guangdong Acad Sci Guangdong Inst Microbiol Guangdong Open Lab Appl Microbiol State Key Lab Appl Microbiol Southern China Guang Guangzhou 510070 Peoples R China;

    Guangdong Acad Sci Guangdong Inst Microbiol Guangdong Open Lab Appl Microbiol State Key Lab Appl Microbiol Southern China Guang Guangzhou 510070 Peoples R China;

    Guangdong Acad Sci Guangdong Inst Microbiol Guangdong Open Lab Appl Microbiol State Key Lab Appl Microbiol Southern China Guang Guangzhou 510070 Peoples R China;

    Guangdong Acad Sci Guangdong Inst Microbiol Guangdong Open Lab Appl Microbiol State Key Lab Appl Microbiol Southern China Guang Guangzhou 510070 Peoples R China;

    Guangdong Acad Sci Guangdong Inst Microbiol Guangdong Open Lab Appl Microbiol State Key Lab Appl Microbiol Southern China Guang Guangzhou 510070 Peoples R China;

    Guangdong Acad Sci Guangdong Inst Microbiol Guangdong Open Lab Appl Microbiol State Key Lab Appl Microbiol Southern China Guang Guangzhou 510070 Peoples R China;

    Guangdong Acad Sci Guangdong Inst Microbiol Guangdong Open Lab Appl Microbiol State Key Lab Appl Microbiol Southern China Guang Guangzhou 510070 Peoples R China;

    Guangdong Acad Sci Guangdong Inst Microbiol Guangdong Open Lab Appl Microbiol State Key Lab Appl Microbiol Southern China Guang Guangzhou 510070 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Black phosphorus; Antibiotic consumption; Nanocomposites; Low biotoxicity; Synergistic antibacteria;

    机译：黑磷;抗生素消耗;纳米复合材料;低生物毒性;协同抗菌;

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