Urea reduced silver nanowire as well as preparation method and application thereof

The invention discloses a urea reduced silver nanowire as well as a preparation method and application thereof, and belongs to the technical field of synthesis of nano materials. The preparation method of the urea reduced silver nanowire comprises the following steps: preparing a solution, adding urea and silver nitrate into ethylene glycol, stirring for 30-40 minutes at normal temperature until the urea and the silver nitrate are dissolved, carrying out ultrasonic treatment for 10-20 minutes to obtain a solution A, and carrying out continuous ice bath on the solution A for later use; adding polyvinylpyrrolidone into ethylene glycol, and stirring at normal temperature for 30-40 minutes until the polyvinylpyrrolidone is dissolved to obtain a solution B for later use; then conducting high-temperature reaction, preheating the solution B to 150-180 DEG C, conducting heat preservation, dripping the solution A into a reaction solution, introducing N2, stirring and standing, and conducting heat preservation, thereby