Green synthesis of metal nanoparticles using plant extract is an eco-friendly and cost-effective method for synthesizing metal nanoparticles. In this present work silver nanoparticles have been synthesized using ethanolic extract of Mimosa Pudica Linn plant (MPL) leaves. Green synthesized silver nanoparticles (AgNps) have been characterized by UV-Vis spectrometer, Fourier Transform Infra-Red ((FTIR) spectra, dynamic light scattering (DLS), Scanning Electron Microscopy (SEM) and X-ray diffraction (XRD) methods. UV-Vis spectrum of synthesized silver nanoparticles from Mimosa pudica Linn leaves extract shows a characteristic absorption peak at 421 nm. FTIR analysis reveals that presence of silver nanoparticles the presence of some biomolecules in extracts that act as reducing and capping agent for green synthesis of silver nanoparticles. DLS analysis showed AgNPs are drifted widely from 58.6 to 157.7 nm, with an average particle size of 104.7 nm. The particles are found to be polydisperse and slightly agglomerated due to the presence of phytochemicals present in the plant extract. Scanning electron microscope showed silver nanoparticles are spherical shaped. The XRD pattern revealed the presence of crystalline, dominantly spherical silver nanoparticles in the sample having size ranging from 42 to 50 nm. The XRD peaks 38.08, 44.22, 64.42, and 77.32 for leaves extract and 38.1, 44.3, 64.5, 77.5, and 81.33 for callus extract can be assigned the plane of silver crystals (111), (200), (220), and (311), respectively, and shows face-centered, cubic and crystalline nature of the silver nanoparticles. The green synthesized silver nanoparticles show significant antibacterial activity.

中文翻译：

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含羞草叶乙醇提取物绿色合成及表征银纳米粒子

使用植物提取物绿色合成金属纳米粒子是一种环境友好且具有成本效益的金属纳米粒子合成方法。在目前的工作中，使用含羞草植物 (MPL) 叶子的乙醇提取物合成了银纳米粒子。绿色合成的银纳米粒子 (AgNps) 已通过紫外-可见光谱仪、傅立叶变换红外光谱 ((FTIR) 光谱、动态光散射 (DLS)、扫描电子显微镜 (SEM) 和 X 射线衍射 (XRD) 方法进行表征。含羞草叶提取物合成的银纳米粒子的紫外-可见光谱在 421 nm 处显示出特征吸收峰。FTIR 分析表明，银纳米粒子的存在 提取物中存在一些作为还原剂和封端剂的生物分子，用于银的绿色合成纳米粒子。DLS 分析显示 AgNPs 在 58.6 到 157.7 nm 范围内漂移，平均粒径为 104.7 nm。发现由于植物提取物中存在植物化学物质，这些颗粒是多分散的并且轻微团聚。扫描电子显微镜显示银纳米粒子呈球形。XRD图谱显示样品中存在结晶的、主要为球形的银纳米颗粒，其尺寸范围为42至50nm。XRD 峰 38.08、44.22、64.42 和 77.32 叶子提取物和 38.1、44.3、64.5、77.5 和 81.33 可以指定为我们的提取晶面（1s 的银提取晶面） 200)、(220) 和 (311) 分别显示了银纳米粒子的面心、立方和结晶性质。