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Co(0)superparamagnetic nanoparticles stabilized by an organic layer coating with antimicrobial activity

机译：CO（0）通过抗微生物活性的有机层涂层稳定的CO（0）超顺磁性纳米颗粒

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摘要

Cobalt (Co) is one of the most promising materials in nanotechnology due to its superior magnetic properties. However, due to the high cytotoxicity of cobalt, the activity in biological systems has been little studied. In this work, we report the structural, morphological, and magnetic properties of cobalt nanoparticles stabilized with an organic layer (Co-0@C-NPs) and its potential antimicrobial activity. The Co-0@C-NPs were obtained from solvothermal conditions and characterized by X-ray powder diffraction, electronic microscopy, and magnetic measurements. The organic layer was analysed by thermogravimetric analysis, Scanning Electron Microscopy, Energy Dispersive Spectrometer, and Fourier Transform Infrared Spectroscopy. From the TEM image, an organic coating layer is observed around Co(0)where this coating prevents NPs from oxidation allowing it to remain stable until 400 degrees C. Surface composition studies by SEM/EDS allowed the identification of carbon, oxygen, and cobalt elements present in the organic layer. This result was corroborated later by FITR analysis. Preliminary antibacterial properties were also investigated, which showed that the cobalt nanoparticles are active againstStaphylococcus aureusafter 1 h of exposure. The superparamagnetic properties and organic coating Co-0@C-NPs could be biocompatible with biological systems, but more research is needed to apply these nanoparticles in biomedical products.
机译：钴（CO）是由于其优异的磁性而导致纳米技术最有希望的材料之一。然而，由于钴的高细胞毒性，生物系统中的活性很少研究过。在这项工作中，我们报告了用有机层（CO-0-NPS）稳定的钴纳米粒子的结构，形态和磁性及其潜在的抗微生物活性。将CO-0 @ C-NPS从溶剂热条件下获得，并通过X射线粉末衍射，电子显微镜和磁测量表征。通过热重分析，扫描电子显微镜，能量分散光谱仪和傅里叶变换红外光谱分析有机层。从TEM图像围绕CO（0）观察有机涂层，其中该涂层可防止NPS免于氧化，使其保持稳定，直至400℃。通过SEM / EDS的表面组成研究允许鉴定碳，氧气和钴存在于有机层中的元素。通过FITR分析以后，该结果得到了证实。还研究了初步抗菌性质，表明钴纳米粒子是活性抵抗含有1小时的抵抗含量。超顺磁性和有机涂料CO-0 @ C-NPS可以是生物系统的生物相容性，但需要更多的研究来在生物医学产品中应用这些纳米颗粒。

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  • 来源
    《RSC Advances》 |2020年第57期|共7页
  • 作者

    Santana Paula A.; Castillo Carolina A.; Michea Sebastian A.; Venegas-Yazigi Diego; Paredes-Garcia Veronica;

  • 作者单位

    Univ Autonoma Chile Fac Ingn Inst Ciencias Quim Aplicadas Llano Subercaseaux 2801 Santiago 8910060 Chile;

    Univ Autonoma Chile Fac Ingn Inst Ciencias Quim Aplicadas Llano Subercaseaux 2801 Santiago 8910060 Chile;

    Univ Autonoma Chile Fac Ingn Inst Ciencias Quim Aplicadas Llano Subercaseaux 2801 Santiago 8910060 Chile;

    CEDENNA Santiago Chile;

    CEDENNA Santiago Chile;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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