UNASSIGNED: This study presents an investigation of the efficacy of a plant extract in conjunction with the incorporation of supplementary silver nanoparticles, as well as the generation of smaller-sized silver nanoparticles using laser fragmentation.and then measure thier toxity on the blood.
UNASSIGNED: Ag nanoparticles were synthesized using pulsed laser fragmentation on green tea AgNPs. The synthesis process involved the utilization of a Q-switch Nd:YAG laser with wavelengths of 1064 nm and 532 nm, with energy ranging from 200 to 1000 mJ. Initially, a silver nano colloid was synthesized through the process of fragmented of the Ag target using the second harmonic generation of 532 nm at various energy levels. The optimal energy within the selected wavelengths was determined in order to facilitate the ultimate comparison. Transmission electron microscopy (TEM) was used to determine surface morphology and average particle size, while a spectrophotometer was used to analyses UV light\'s spectrum characteristics. The measurements focused on the surface plasmon resonance (SPR) phenomenon. The absorption spectra of silver nanoparticles exhibit distinct and prominent peaks at wavelengths of 405 nm and 415 nm. The mean diameter of the silver nanoparticles was found to be 16 nm and 20 nm, corresponding to wavelengths of 1064 nm and 532 nm, respectively.
UNASSIGNED: As a consequence, there is a decrease in the range of particle sizes and a decrease in the mean size to lower magnitudes, resulting in a very stable colloid. This particular methodology has demonstrated considerable efficacy in the production of colloidal suspensions with the intended particle dimensions. Moreover, by the analysis of nanoparticles in human blood, no discernible alterations in the blood constituents were seen, indicating their non-toxic nature.
■本研究对植物提取物与补充银纳米颗粒结合的功效进行了研究,以及使用激光破碎产生较小尺寸的银纳米颗粒。然后测量血液的毒性。
■在绿茶AgNP上使用脉冲激光碎裂合成Ag纳米颗粒。合成过程涉及使用波长为1064nm和532nm的Q开关Nd:YAG激光器,能量范围从200到1000mJ。最初,通过在各种能级下使用532nm的二次谐波产生将Ag靶碎裂的过程合成了银纳米胶体。确定所选波长内的最佳能量以便于最终比较。透射电子显微镜(TEM)用于确定表面形貌和平均粒径,而分光光度计用于分析紫外光的光谱特性。测量集中在表面等离子体共振(SPR)现象上。银纳米颗粒的吸收光谱在405nm和415nm的波长处表现出明显的峰。发现银纳米颗粒的平均直径为16nm和20nm,对应于1064nm和532nm的波长,分别。
■因此,颗粒尺寸的范围减小,平均尺寸减小到较低的幅度,产生非常稳定的胶体。这种特定的方法已经证明在生产具有预期颗粒尺寸的胶体悬浮液中相当有效。此外,通过分析人体血液中的纳米颗粒,没有看到血液成分的明显变化,表明其无毒性质。