▎ 摘　　要

NOVELTY - Preparing ultra-long nanosilver wire material comprises (i) adding glucose and polyethylene pyrrolidone to deionized water and stirring uniformly to obtain a clear solution, (ii) adding copper sulfate solution to the clear solution obtained in step (i), and stirring evenly to obtain mixed solution A, (iii) adding sodium chloride solution into the mixed solution obtained (step (ii), and stirring equally to get mixed solution B, (iv) gradually adding silver nitrate solution to mixed solution (III) and stirring to obtain reaction solution, transferring reaction solution to hydrothermal, reacting kettle for 14-20 hours at 110-130degrees Celsius to obtain flocculent product, and (v) precipitating and washing the flocculated product in sequence and washing. The length-diameter ratio of the over long nano-silver wire material is greater than 1000. USE - The method is useful for preparing ultra-long nano silver wire material, which is useful in flexible electronic product, research and steering new nano-material at home and abroad instead of metal oxide film such as graphene and carbon nano tube, composite nano material, metal grid and metal nanowires. ADVANTAGE - The method uses mild, green and environment-friendly glucose as reducing agent, replaces the polyol as solvent, effectively reduces the viscosity of the reaction liquid, which is good for washing the product, and is easy for industrial production of ultra-long nanosilver wire material. The obtained product is easy to wash, only settling and washing can meet the use requirement, reducing the product caused by agglomeration of the nanowire, respectively deionized water and anhydrous ethanol to clean the inorganic impurities and organic impurities can be effectively cleaned, the cleaning effect is good. The method reacts in the aqueous solution system, breaking the current polyol organic system for preparing ultra- long nano-silver wire material technique, without using any organic solvent, breaking through ultra long nano silver material washing difficult