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One-step green synthesis of gold and silver nanoparticles with ascorbic acid and their versatile surface post-functionalization

机译:金银纳米粒子的一步绿色合成抗坏血酸及其多功能表面官能化

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In this study, we present a rapid and efficient synthesis of metallic gold and silver nanoparticles using ascorbic acid (vitamin C), which acts both as reducing and stabilizing agent. The size of the particles obtained, in the range of 8 to 80 nm for gold and 20 to 175 nm for silver, and their polydispersity (10–50%) are subtly affected, therefore tunable, by the pH of either the metal salt solution or the ascorbic acid solution. We also show that one of the main features of this synthetic approach is the simple, fast and versatile nanoparticle surface modification with a large variety of water soluble surfactants that can be neutral, positively or negatively charged.
机译:在这项研究中,我们使用抗坏血酸(维生素C)表现出了金属金和银纳米颗粒的快速有效合成,其用作还原和稳定剂。得到的颗粒的尺寸在8至80nm的金色和20至175nm的范围内,它们的多分散性(10-50%)通过金属盐溶液的pH巧妙地受到调节的或抗坏血酸溶液。我们还表明,这种合成方法的主要特征之一是简单,快速,通用的纳米颗粒表面改性,具有各种水溶性表面活性剂,其可以是中性的,积极的或带负电。

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