利用鼠尾草磨绿色合成纳米银。萃取物及其合成参数对其形成、抗氧化及电催化活性的影响

Damla Erkakan, N. Diker, M. Önal, İffet İrem Çankaya
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引用次数: 0

摘要

绿色合成方法是一种环保、无毒、简单、安全的合成银纳米粒子的方法,其中利用植物提取物是最有效的方法。鼠尾草磨坊。我们选择了以前没有使用的方法来进行这项研究。通过改变萃取物用量、萃取物浓度和前驱体中银离子浓度等合成参数,采用紫外可见光谱、透射电镜和傅里叶变换红外光谱技术研究了它们对纳米颗粒形成和结构的影响。采用DPPH法评价提取物和AgNPs的抗氧化活性。观察到植物合成的纳米颗粒也具有抗氧化电位。最后,采用AgNPs作为碳浆电极(CPE)的改性剂,利用电化学阻抗谱(EIS)、循环伏安法(CV)和方波伏安法(SWV)研究了AgNPs对电荷转移电阻和抗坏血酸信号的影响。E1-1/CPE对抗坏血酸具有良好的电催化氧化作用,可用于新型传感器的研制。结果表明,在绿色合成AgNPs的过程中,合成参数不仅会影响AgNPs的尺寸和尺寸分布,还会影响其抗氧化性能和电化学性能。
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Green synthesis of silver nanoparticles using Salvia fruticosa Mill. extract and the effect of synthesis parameters on their formation, antioxidant, and electro-catalytic activity
Among green synthesis methods, which are an eco-friendly, non-toxic, simple, and safe approach for the synthesis of silver nanoparticles (AgNPs), using plant extract is the most efficient method. Salvia fruticosa Mill. which was not used formerly was selected for this research. By changing the synthesis parameters (the amount of extract, extract concentration, and silver ion concentration in precursors), their effects on the formation and structure of nanoparticles were investigated by UV-visible spectroscopy, transmission electron microscopy and Fourier transform infrared spectroscopy techniques. The antioxidant activity of extracts and AgNPs was evaluated by performing DPPH assay. It is observed that the phytosynthesized nanoparticles also possess antioxidant potentials. Finally, AgNPs were used as modifiers for carbon paste electrode (CPE) and their effect on charge transfer resistance and the ascorbic acid signal was investigated by using electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), and square wave voltammetry (SWV). E1-1/CPE showed good electro-catalytic oxidation of ascorbic acid and can be utilized for the development of the new sensors. According to results, in the process of green synthesis of AgNPs, synthesis parameters are vital as they change not only the size and size distribution of the AgNPs but also their antioxidant activity and electrochemical properties.
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