Ethiopian medicinal plant, Vernonia amygdalina Del. mediated green silver nanostructures (V-SNS) were successfully synthesized for the first time. The surface amalgamation of biomolecules of plant leaf extract around Ag nanostructures has also been approved by the most advanced techniques which were employed to characterize the NSs. The presence of absorbance maxima, λ_max at 454 nm confirms the formation of V-SNS. UV-DRS studies revealed the band gap of 2.09 eV for NSs. The role of biomolecules as capping agents for V-SNS was authenticated by FT-IR spectra. The presence of four sharp peaks in the XRD pattern of NSs confirmed the highly crystalline nature of NSs. The TGA-DTA studies revealed that Ag NS is thermally stable above 570 °C. The purity of the NSs was corroborated by SEM-EDAX analysis. The average particle size of V-SNS was deduced to be 35.24 nm. In addition, TEM micrographs revealed the presence of V-SNS with varieties of nano-sized shapes. TEM-HRTEM-SAED analysis authenticated the presence of silver NS with interplanar spacing values of 0.248 nm and 0.243 nm which conformed to Ag (111) lattice fringes of silver. The V-SNS showed significant synergistic antibacterial influence versus S. aureus, E. coli, P. aeruginosa, and E. aerogenes. The uppermost zone of inhibition of 18 mm was inscribed against P. aeruginosa bacteria. The better electrochemical properties of V-SNS electrode as revealed by cyclic voltammograms, Nyquist and Bode plots make it suitable for potential electrochemical sensor application. V-SNS exhibited better photocatalytic activities against Acid orange 8 and Acid red 88 dyes.

首次成功合成了埃塞俄比亚药用植物Vernonia amygdalina Del。介导的绿色银纳米结构（V-SNS）。Ag纳米结构周围植物叶片提取物的生物分子的表面融合还被最先进的技术所认可，这些技术被用来表征NS。最大吸光度，存在λ_最大在454nm处确认V-SNS的形成。UV-DRS研究显示NS的带隙为2.09 eV。FT-IR光谱证实了生物分子作为V-SNS的封端剂的作用。NSs的XRD图谱中四个尖峰的存在证实了NSs的高度结晶性。TGA-DTA研究表明，Ag NS在570°C以上的温度下具有热稳定性。通过SEM-EDAX分析证实了NS的纯度。推算出V-SNS的平均粒径为35.24nm。另外，TEM显微照片揭示了具有多种纳米尺寸形状的V-SNS的存在。TEM-HRTEM-SAED分析验证了银NS的存在，其面间距值为0.248 nm和0.243 nm，与银的Ag（111）晶格条纹相符。V-SNS对细菌具有明显的协同抗菌作用金黄色葡萄球菌，ē。大肠杆菌，铜绿假单胞菌和产气大肠杆菌。铜绿假单胞菌细菌的最高抑制区为18 mm 。循环伏安图，Nyquist和Bode图显示V-SNS电极具有更好的电化学性能，使其适合潜在的电化学传感器应用。V-SNS对酸性橙8和酸性红88染料表现出更好的光催化活性。