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首页> 外文期刊>Journal of materials science >Impact on optical, electrical and antibacterial response of microwave irradiated silver nanoparticles
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Impact on optical, electrical and antibacterial response of microwave irradiated silver nanoparticles

机译：微波辐照银纳米粒子对光，电和抗菌响应的影响

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摘要

Silver nanoparticles (AgNPs) have been formulated using microwave irradiation from non-aqueous solution of silver nitrate (AgNO3) and poly (N-vinyl-2-pyrrolidone) (PVP) as a stabilizer. Ethanol has also been reacted like a reducer for microwave irradiation process which is quite rapid, homogeneous and efficient. The as synthesized AgNPs was further characterized by ultraviolet-Visible (UV-Vis) spectroscopy, Fourier transform infrared spectroscopy (FTIR), photoluminescence, Raman spectroscopy, X-ray powder diffraction (XRD), scanning and transmission electron microscopy (SEM-TEM), zeta potential and dynamic light scattering (DLS). The presence of surface plasmon resonance (SPR) band (416nm) confirmed fabrication of AgNPs. The effect of microwave irradiation time showed that the size, shape and stability of AgNPs depend on increasing of peak intensity with increasing reaction time. FTIR spectrum confirmed the possible functional group in the product indicating presence of PVP. The enlargement in the size and agglomeration of nanoparticles were prevented by encapsulation of PVP during the reaction. XRD spectra illustrated that AgNPs are higher crystalline having face-centered cubic surface. The morphological analysis found that the AgNPs are homogeneous and spherical with the size of 18 +/- 5nm. The zeta potential measurement affirms the higher stability of AgNPs due to its negatively charged surface. The prepared AgNPs also exhibited electrical properties obeying the ohm's law and significantly antimicrobial activities against Escherichia coli due to the small size.
机译：已使用微波辐射由硝酸银（AgNO3）和聚（N-乙烯基-2-吡咯烷酮）（PVP）作为稳定剂的非水溶液配制了银纳米颗粒（AgNPs）。乙醇也像还原剂一样进行了反应，用于微波辐照过程，该过程非常迅速，均匀且有效。所合成的AgNPs进一步通过紫外-可见（UV-Vis）光谱，傅里叶变换红外光谱（FTIR），光致发光，拉曼光谱，X射线粉末衍射（XRD），扫描和透射电子显微镜（SEM-TEM）进行表征。 ，ζ电势和动态光散射（DLS）。表面等离振子共振（SPR）带（416nm）的存在证实了AgNP的制备。微波辐射时间的影响表明，AgNPs的大小，形状和稳定性取决于峰强度随反应时间的增加而增加。 FTIR光谱证实了产物中可能存在的官能团，表明存在PVP。在反应过程中，通过封装PVP可防止纳米颗粒尺寸增大和团聚。 XRD谱图表明AgNP是具有面心立方表面的较高晶体。形态分析发现，AgNPs是均质的和球形的，尺寸为18 +/- 5nm。 Zeta电势测量证实了由于其带负电的表面，AgNP的稳定性更高。制备的AgNPs还具有遵循欧姆定律的电性能，并且由于其小尺寸而具有显着的针对大肠杆菌的抗菌活性。

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  • 来源
    《Journal of materials science》 |2019年第7期|6370-6377|共8页
  • 作者

    Kumar Manish; Devi Pooja; Shivling V. D.; Kumar Baban; Kumar Akshay;

  • 作者单位

    CSIR Cent Sci Instruments Org, Sect 30, Chandigarh 160030, India|Sri Guru Granth Sahib World Univ, Fatehgarh Sahib 140406, India;

    CSIR Cent Sci Instruments Org, Sect 30, Chandigarh 160030, India;

    CSIR Cent Sci Instruments Org, Sect 30, Chandigarh 160030, India;

    CSIR Cent Sci Instruments Org, Sect 30, Chandigarh 160030, India;

    Sri Guru Granth Sahib World Univ, Fatehgarh Sahib 140406, India;

  • 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);
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