Silver nanowires AgNWs are one of the key nanomaterials that have garnered significant attention in the field of nanotechnology due to their unique properties and wide range of potential applications. These nanowires are elongated structures that can have lengths of several micrometers with diameters typically ranging from tens to hundreds of nanometers. AgNWs exhibit exceptional electrical conductivity, high aspect ratios, flexibility, and transparency, making them promising candidates for various applications such as transparent conductive films, flexible electronics, sensors, and catalysis. The simplest and most common technique of synthesizing silver nanowires (AgNWs) is the polyol method, which usually produces AgNWs with a relatively high percentage of by-products. AgNW-based devices are less effective when these nanoparticles are present, and they need to be removed through several purifying processes. In this study, AgNWs were synthesized via the simplest modified single-pot polyol process, which involved reducing AgNO3 with ethylene glycol at a high temperature of roughly 160 °C, while polyvinylpyrrolidone (PVP) was used as a capping agent in the presence of silver chloride (AgCl). Our approach is to minimize the amount of silver nanoparticles (AgNPs) and the gas produced during the synthesis by using freshly prepared AgCl. Aliquots are taken periodically to monitor the formation of AgNPs and their transformation into AgNWs using UV–Vis absorption spectrophotometry. The PVP-AgNWs aggregate is precipitated with acetone and then purified multiple times with de-ionized water and ethanol using a centrifuge. Further investigations for as-synthesized AgNWs are performed using XRD, FESEM-EDX, and TEM.

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A Sustainable Approach to Nanomaterial Production: The Synthesis and Investigation of Silver Nanowires with Minimal By-Product Formation

  • Dheyaa H. Ibrahim,
  • Shatha Y. Al-Samarrai,
  • Khalid S. Hashim

摘要

Silver nanowires AgNWs are one of the key nanomaterials that have garnered significant attention in the field of nanotechnology due to their unique properties and wide range of potential applications. These nanowires are elongated structures that can have lengths of several micrometers with diameters typically ranging from tens to hundreds of nanometers. AgNWs exhibit exceptional electrical conductivity, high aspect ratios, flexibility, and transparency, making them promising candidates for various applications such as transparent conductive films, flexible electronics, sensors, and catalysis. The simplest and most common technique of synthesizing silver nanowires (AgNWs) is the polyol method, which usually produces AgNWs with a relatively high percentage of by-products. AgNW-based devices are less effective when these nanoparticles are present, and they need to be removed through several purifying processes. In this study, AgNWs were synthesized via the simplest modified single-pot polyol process, which involved reducing AgNO3 with ethylene glycol at a high temperature of roughly 160 °C, while polyvinylpyrrolidone (PVP) was used as a capping agent in the presence of silver chloride (AgCl). Our approach is to minimize the amount of silver nanoparticles (AgNPs) and the gas produced during the synthesis by using freshly prepared AgCl. Aliquots are taken periodically to monitor the formation of AgNPs and their transformation into AgNWs using UV–Vis absorption spectrophotometry. The PVP-AgNWs aggregate is precipitated with acetone and then purified multiple times with de-ionized water and ethanol using a centrifuge. Further investigations for as-synthesized AgNWs are performed using XRD, FESEM-EDX, and TEM.