ABSTRACT

Spherical silver nanoparticles of required size were synthesized employing a seed-mediated approach using leaf extract of Azadirachta indica. Reaction pH was used to manipulate the rate of reduction of the precursor salt for achieving a fast rate of reaction needed during the synthesis of silver nanoparticles seeds and a slower rate of reaction needed for controlled growth and inhibition of secondary nucleation. A mathematical model was developed for staggered growth of silver nanoparticles using a multi-step growth approach. The developed model was used to predict the size of silver nanoparticles after various growth steps and was compared with the experimentally achieved results. Transmission electron microscope images were used for the determination of the size of the synthesized silver nanoparticles. The mathematical model appears to be a promising tool in enabling real-life application of green synthesized silver nanoparticles.

摘要

使用种子印A的叶提取物，通过种子介导的方法合成了所需大小的球形银纳米颗粒。反应pH用于控制前体盐的还原速率，以实现银纳米粒子种子合成过程中所需的快速反应速率和受控生长和抑制二次成核所需的较慢反应速率。使用多步生长方法开发了用于交错生长银纳米颗粒的数学模型。所开发的模型用于预测各种生长步骤后银纳米颗粒的大小，并将其与实验获得的结果进行比较。透射电子显微镜图像用于确定合成的银纳米颗粒的尺寸。数学模型似乎是实现绿色合成银纳米粒子实际应用的有前途的工具。