Optimization of Silver Nanowires Synthesis and Purification Processes for Commercially Viable Pilot Scale Production

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Silver nanowires (SNW) are among the most promising nanomaterials for modifying electrical properties of advanced multicomponent systems due to their large length to diameter ratio, nanometric diameter, and exceptional electrical conductivity. As the result they have become key functional component in novel applications including flexible transparent electrodes for displays or solar panels, sensors, thermal coatings, catalysts, and conductive inks and adhesives. Several physical and chemical methods have been developed for production of nanowires, among which the polyol reactions have been proven efficient for making SNW with a range of lengths and diameters at laboratory-scale. The remaining challenge is scaling-up the reaction and purification procedure for cost-effective, high-yield production of nanowires with controlled properties.Here we are proposing a collaborative R&D project on pilot scale production of various grades of silver nanowires. The research involves systematic study of the major factors influencing the synthesis and purification of the nanowires via extensive analysis of the reaction pathway and the outcome of an array of experiment. The production capacity will be expanded in multiple steps alongside thorough analysis of the product. Required modifications will be applied to ensure the desired quality is maintained at each step. The results will be used to implement an optimized, economically viable pilot-scale process for high-yield, controlled production of SNW. The feasibility of automating the established process will then be examined to improve the product consistency. Also, a hypothesis will be developed to elucidate the reaction mechanism and provide guidelines for further increase in production scale. Successful completion of this research is the first step towards commercial production of SNW and SNW-based advanced materials. At least two interns will be trained, and one full-time position will be created. We expect to publish and present a portion of the results of this study. We will also consider the possibility of patenting the SNW production process.