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首页> 外文期刊>Applied Nanoscience >Nelumbo nucifera leaf extract mediated synthesis of silver nanoparticles and their antimicrobial properties against some human pathogens
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Nelumbo nucifera leaf extract mediated synthesis of silver nanoparticles and their antimicrobial properties against some human pathogens

机译：莲核叶提取物介导的银纳米颗粒的合成及其对某些人类病原体的抗菌特性

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摘要

In the present report, bio-reduction of silver nitrate into silver nanoparticles using the leaf extract of Nelumbo nucifera is explained. The synthesized nanoparticles exhibited surface Plasmon resonance at 410?nm. The crystalline nature of the biosynthesized silver nanoparticles was confirmed from the X-ray diffraction pattern. The functional groups responsible for bio-reduction of silver nitrate into silver were analyzed by Fourier transform infrared spectroscopy and confirmed by X-ray photoelectron spectrum. Field emission transmission electron microscope micrographs showed the formation of well-separated silver nanoparticles of size in the range of 30–40?nm. The result of dynamic light scattering also confirms the mono-dispersed silver nanoparticles with average size of 35?nm. The synthesized nanoparticles exhibited excellent antibacterial activity against the Gram-positive bacteria B.?subtilis .
机译：在本报告中，说明了使用莲莲的叶提取物将硝酸银生物还原为银纳米颗粒的方法。合成的纳米粒子在410？nm处表现出表面等离子体共振。从X射线衍射图证实了生物合成的银纳米颗粒的晶体性质。通过傅立叶变换红外光谱分析负责将硝酸银生物还原为银的官能团，并通过X射线光电子能谱确认。场发射透射电子显微镜显微照片显示形成了尺寸为30–40？nm的分离良好的银纳米颗粒。动态光散射的结果也证实了平均粒径为35？nm的单分散银纳米颗粒。合成的纳米粒子对革兰氏阳性细菌枯草芽孢杆菌具有优异的抗菌活性。

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