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Synthesis of Silver Nanoparticles at the Liquid-Liquid Using Ultrasonic Wave

机译：超声波在液相中合成银纳米粒子

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摘要

The high demand of flexible electronics and the miniaturization of electronic components have been increasing very rapidly. Nanotechnology and in particular nanoparticles have become very important for the development of new technologies and applications which depend on the synthesis and characterization of nanoparticles with specific properties. Significant attention has been focused on the characteristics of the nanoparticles since their properties, particle size and shape are very different when compared to those of the bulk materials. In order to produce nanoparticles with more efficient structures and electronic properties for nano ink, it is necessary to control the particle size to avoid agglomeration. Currently, the nanoparticle size and its agglomeration is controlled by surfactants, but some studies have shown that adding surfactants have negative effects on the conductivity of the nanoparticles along with the high curing temperatures of nano-ink. In this study, silver nanoparticles were synthesized by adding methanol to water instead of surfactants in order to control the silver nanoparticle size. The water and methanol solution was prepared by using different ratios v/v of water/methanol obtaining a liquid-liquid interface and forming a molecular-molecular interface restricting the silver ion movement in the solution. In addition to the liquid-liquid interface, the ion concentration and movement were also restricted through a spraying mist by using ultrasonic waves. The silver ion and the reducing agent were found to have a difference in concentration by the spraying mist method. The movement of the silver ions and the reducing agents were controlled by the difference in concentration. It was observed that the control of the nanoparticles and ion movement was more efficient by spraying silver ion solution than using a reducing agent solution. We confirmed that by increasing the volumetric ratios of methanol the silver nanoparticle size also increased. The mist particle size and the concentration were also calculated at different volumetric ratios of methanol.
机译：柔性电子的高需求和电子部件的小型化已经非常迅速地增长。纳米技术，特别是纳米颗粒，对于新技术和新应用的开发非常重要，新技术和新应用依赖于具有特定性质的纳米颗粒的合成和表征。由于与散装材料相比，其性质，粒径和形状差异很大，因此纳米颗粒的特性引起了人们的极大关注。为了生产具有用于纳米墨的更有效的结构和电子性质的纳米颗粒，必须控制粒度以避免团聚。目前，纳米颗粒的大小及其团聚受表面活性剂控制，但是一些研究表明，添加表面活性剂对纳米颗粒的电导率以及纳米油墨的高固化温度具有负面影响。在这项研究中，通过向水中添加甲醇代替表面活性剂来合成银纳米颗粒，以控制银纳米颗粒的大小。通过使用水/甲醇的不同比率v / v制备水和甲醇溶液，获得液-液界面并形成限制溶液中银离子运动的分子-分子界面。除了液-液界面之外，还通过使用超声波通过喷雾来限制离子的浓度和移动。通过喷雾法发现银离子和还原剂的浓度不同。银离子和还原剂的移动由浓度差控制。观察到，通过喷射银离子溶液比使用还原剂溶液更有效地控制纳米颗粒和离子运动。我们证实，通过增加甲醇的体积比，银纳米颗粒尺寸也增加了。还以甲醇的不同体积比计算了雾的粒径和浓度。

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  • 来源
    《Journal of Electronic Packaging》 |2013年第1期|011005.1-011005.5|共5页
  • 作者

    Seong-Ik Hong; Alma Duarte; Gabriel A. Gonzalez; Nam-Soo Kim;

  • 作者单位

    Department of Metallurgical and Materials Engineering, The University of Texas at EI Paso, EI Paso, TX 79968;

    Department of Metallurgical and Materials Engineering, The University of Texas at EI Paso, EI Paso, TX 79968;

    Department of Metallurgical and Materials Engineering, The University of Texas at EI Paso, EI Paso, TX 79968;

    Department of Metallurgical and Materials Engineering, The University of Texas at EI Paso, EI Paso, TX 79968;

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