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Hydrodynamic Cavitation Enhanced Biosynthesis of Silver Nanoparticles at Room Temperature and Its Mechanism
Materials Letters ( IF 3 ) Pub Date : 2019-02-01 , DOI: 10.1016/j.matlet.2018.10.103
Hongyu Liu , Yuchen Sun , Huan Zhang , Jie Wang , Junfu Wei

Abstract Hydrodynamic cavitation (HC) was employed in order to enhance the biological reducibility of biomass to produce silver nanoparticles (AgNPs) readily. UV–Vis spectra analysis, TEM, HRTEM, SAED and XRD were used to characterize the materials. The results confirmed that AgNPs with uniform distribution could be successfully synthesized by hydrodynamic cavitation enhanced biosynthesis using CP (C. Platycladi) leaf extract (0.3 g/L) without pH enhanced at room temperature (30 °C). Finally, the electron spin resonance (ESR) technique was then applied to detect the mechanism of the enhanced biosynthesis of AgNPs in the HC system. It is concluded that the “hot spot” generated resulting from bubble collapsing is the crucial factor to enhance the reaction.

中文翻译:

水动力空化增强室温下银纳米粒子的生物合成及其机制

摘要 采用流体动力学空化 (HC) 以提高生物质的生物还原性,以轻松生产银纳米粒子 (AgNPs)。UV-Vis 光谱分析、TEM、HRTEM、SAED 和 XRD 用于表征材料。结果证实,使用 CP (C. Platycladi) 叶提取物 (0.3 g/L) 通过流体动力学空化增强生物合成,可以成功合成分布均匀的 AgNP,而无需在室温 (30 °C) 下增强 pH。最后,然后应用电子自旋共振 (ESR) 技术来检测 HC 系统中 AgNPs 生物合成增强的机制。结论是气泡破裂产生的“热点”是促进反应的关键因素。
更新日期:2019-02-01
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