Investigation of structural properties and antibacterial activity of AgO nanoparticle extract from Solanum nigrum/Mentha leaf extracts by green synthesis method

IF 3.8 4区工程技术 Q2 CHEMISTRY, MULTIDISCIPLINARY

Green Processing and Synthesis Pub Date : 2023-01-01 DOI:10.1515/gps-2023-0080

Subramanian Mohanaparameswari, Manavalan Balachandramohan, Ponnusamy Sasikumar, Chinnaiyan Rajeevgandhi, Mark Vimalan, Sanmugam Pugazhendhi, Krishnamurthy Ganesh Kumar, Salim Albukhaty, Ghassan M. Sulaiman, Mosleh M. Abomughaid, Mohammed Abu-Alghayth

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Abstract

Abstract Solanum nigrum and Mentha leaf extracts were used as reducing and stabilizing reagents in the green synthesis of silver oxide nanoparticles (AgO NPs), and their antibacterial efficacy was subsequently evaluated. The structure and morphology of AgO NPs were evaluated using X-ray diffraction and filed emission scanning electron microscope. High-resolution transmission electron microscopy images were used to analyze the characteristics of certain particles with clearly discernible atomic structures. The functional group and elemental composition of AgO NPs were investigated using fourier transform infrared spectroscopy and energy dispersive X-ray spectroscopy. Ultraviolet–visible spectroscopy was used to determine the energy band gap ( E g ) of the sample. The dielectric constant of both samples was found to be inversely proportional to frequency, whereas the dielectric loss was found to be directly proportional to temperature but directly proportional to frequency. This suggests that the space charge has an effect on the mechanism of charge transfer as well as polarizability. AC conductivity rises and is inversely proportional to temperature increases. AgO NPs had a size range of around 56 nm and were mostly spherical. The antibacterial potential of the synthesized AgO NPs using both extracts was compared by the well-diffusion method. AgO NPs at 50–100 µg·mL −1 concentration significantly inhibited the bacterial growth of Bacillus cereus , Staphylococcus aureus , Escherichia coli , and Klebsiella pneumonia .

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绿色合成法研究龙葵/薄荷叶提取物AgO纳米颗粒的结构性质及抗菌活性

摘要以龙葵和薄荷叶提取物为还原剂和稳定剂，绿色合成氧化银纳米粒子(AgO NPs)，并对其抗菌效果进行评价。利用x射线衍射和场发射扫描电镜对AgO NPs的结构和形貌进行了表征。使用高分辨率透射电子显微镜图像来分析具有清晰可分辨原子结构的某些粒子的特征。利用傅里叶变换红外光谱和能量色散x射线光谱研究了AgO NPs的官能团和元素组成。紫外-可见光谱法测定样品的能带隙(E g)。发现两种样品的介电常数与频率成反比，而介电损耗与温度成正比，但与频率成正比。这表明空间电荷不仅影响极化率，而且影响电荷转移机理。交流电导率上升，并与温度升高成反比。AgO NPs的尺寸范围约为56 nm，大部分为球形。采用孔扩散法比较两种提取物合成的AgO NPs的抑菌潜力。50 ~ 100µg·mL−1浓度的AgO NPs显著抑制蜡样芽孢杆菌、金黄色葡萄球菌、大肠杆菌和肺炎克雷伯菌的生长。

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来源期刊

Green Processing and Synthesis CHEMISTRY, MULTIDISCIPLINARY-ENGINEERING, CHEMICAL

CiteScore

6.70

自引率

9.30%

发文量

审稿时长

7 weeks

期刊介绍： Green Processing and Synthesis is a bimonthly, peer-reviewed journal that provides up-to-date research both on fundamental as well as applied aspects of innovative green process development and chemical synthesis, giving an appropriate share to industrial views. The contributions are cutting edge, high-impact, authoritative, and provide both pros and cons of potential technologies. Green Processing and Synthesis provides a platform for scientists and engineers, especially chemists and chemical engineers, but is also open for interdisciplinary research from other areas such as physics, materials science, or catalysis.