Synthesis and Characterizing of High Aspect Ratio Silver Nanowires by Polyol Process

Abstract:

Silver nanowires with controllable and high length-diameter ratio were prepared by using the reductibility of ethylene glycol under high temperature and selective adsorption of PVP. AgNO₃, ethylene glycol, PVP and CuCl₂ was used as the silver source, the reductant, the capping agent and the ion additives, respectively. The effects of centrifugal rate, silver ions' concentration, AgNO₃ adding rate on the morphology of silver nanowires were investigated by SEM, XRD, TEM and other technologies. The results show that the optimal centrifugal rate is 2000n/s, the better silver ions’ concentration is 6.55 mg/mL, and the best rate of adding AgNO₃ is 6 ml/min. The silver nanowires with an average diameter of 74.9 nm, the average length of 45.5μm and its length-diameter ratio of 607.5 are obtained. The silver nanowires with good morphology and high length-diameter ratio are adjustable, which is suitable for the preparation of OLED transparent film electrode materials, and other conductive materials.

• Periodical: Key Engineering Materials (Volume 768)
• Pages: 75-84
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.768.75
• Online since: April 2018
• Authors: Tian Rui Chen, Hai Feng Wang, Hui Yang, Xing Zhong Guo*
• Keywords: Adding Rate, Centrifugal Rate, Length-Diameter Ratio, Polyol Process, Silver Ions' Concentration, Silver Nanowires

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