Green Biosynthesis of Silver Nanoparticles were Obtained from the Extract of Pomegranate (Punica granatum L.) Leaves by Supercritical Extraction Using Microwave Method

Gönül Serdar
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Abstract

In this study, pomegranate (Punica granatum L.) leaf extract and 2% (w/v) aqueous solutions isolated by SFE extraction and microwave extraction were used to create silver nanoparticles (AgNPs). The pomegranate was grown in Turkey's Eastern Black Sea region. AgNO3 solution (0.25, 0.5, and 1 mM) received separate additions of 0.1 and 0.2 mL extract before being microwave-irradiated. Ag nanoparticles made using green chemical techniques were characterized by UV-Visible, , XRD, TEM, Zetasizer and FT-IR. By analyzing the plasmon resonance absorption (SPR) spectra by the UV-Visible technique, the ideal circumstances were identified. The face-centered cubic crystalline silver nanostructures' lattice planes (111), (200), (220), and (311) show that the different Bragg reflection peaks occurred at 2 values of 38.1°, 44.3°, 64.6°, and 77.6°. The average particle size of Ag nanoparticles produced by microwave extraction in an aqueous medium was 86.020.5788 nm, the zeta potential was -140.777 mV, and the polydispersity index was 0.4050.224, according to the results of zeta-Sizer study. The UV-vis absorption spectra of the AuNP solutions, which were kept in a refrigerator, barely altered and remained constant for roughly 4-5 months.
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微波超临界萃取石榴(Punica granatum L.)叶提取物中银纳米颗粒的绿色生物合成
本研究利用石榴(Punica granatum L.)叶提取物以及通过 SFE 萃取和微波萃取分离出的 2%(w/v)水溶液来制造银纳米粒子(AgNPs)。石榴生长在土耳其的东黑海地区。AgNO3 溶液(0.25、0.5 和 1 mM)在微波辐照前分别加入 0.1 和 0.2 mL 提取液。利用绿色化学技术制备的银纳米粒子通过紫外可见光、X 射线衍射、TEM、Zetasizer 和傅立叶变换红外光谱进行了表征。通过紫外可见光技术分析等离子体共振吸收(SPR)光谱,确定了理想的情况。面心立方结晶银纳米结构的晶格平面(111)、(200)、(220)和(311)显示,不同的布拉格反射峰出现在 38.1°、44.3°、64.6° 和 77.6°的 2 值上。根据zeta-Sizer的研究结果,在水介质中通过微波萃取制得的银纳米粒子的平均粒径为86.020.5788 nm,zeta电位为-140.777 mV,多分散指数为0.4050.224。在冰箱中保存的 AuNP 溶液的紫外可见吸收光谱几乎没有变化,在大约 4-5 个月内保持不变。
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