Preparation method for silver nanowires with uniform aspect ratio

Abstract

A preparation method for silver nanowires with a uniform aspect ratio, including: dissolving at a certain temperature silver nitrate in glycerol to get a solution A; dissolving at a certain temperature polyvinylpyrrolidone (PVP) in glycerol to get a solution B; mixing uniformly the solution A and the solution B to form a solution C; then, adding a certain amount of a medium into the solution C and mixing uniformly to form a solution D, finally, transferring the solution D into a reaction kettle, putting the reaction kettle into an oven with a set temperature, and ending the reaction after a certain time of reaction. The reactants are centrifuged twice to obtain precipitated silver nanowires.

1 . A preparation method for silver nanowires, comprising the following steps:
 (1) dissolving silver nitrate in glycerol to get a solution A;   (2) dissolving polyvinylpyrrolidone in glycerol to get a solution B;   (3) mixing uniformly the solution A and the solution B to form a solution C; and   (4) adding an ultrapure water medium into the solution C and mixing uniformly to form a solution D, finally, transferring the solution D into a reaction kettle for reaction at 150° C.±10° C., and centrifuging the reactants to obtain silver nanowires.   
     
     
         2 . The preparation method according to  claim 1 , wherein reaction time in the reaction kettle is 9-10 hours. 
     
     
         3 . The preparation method according to  claim 1 , wherein in step (1), 0.16 g-0.32 g silver nitrate is dissolved at room temperature in 20 ml of glycerol to get the solution A. 
     
     
         4 . The preparation method according to  claim 3 , wherein in step (2), 5 g-7 g polyvinylpyrrolidone is dissolved at room temperature in 80 ml of glycerol to get the solution B. 
     
     
         5 . The preparation method according to  claim 4 , wherein in step (4), 2.5 ml-10 ml of the ultrapure water is added into the solution C and mixed uniformly to form the solution D. 
     
     
         6 . The preparation method according to  claim 1 , wherein the centrifuging is performed twice. 
     
     
         7 . The preparation method according to  claim 5 , wherein the centrifuging is performed twice. 
     
     
         8 . The preparation method according to  claim 2 , wherein in step (1), 0.16 g-0.32 g silver nitrate is dissolved at room temperature in 20 ml of glycerol to get the solution A. 
     
     
         9 . The preparation method according to  claim 8 , wherein in step (2), 5 g-7 g polyvinylpyrrolidone is dissolved at room temperature in 80 ml of glycerol to get the solution B. 
     
     
         10 . The preparation method according to  claim 9 , wherein in step (4), 2.5 ml-10 ml of the ultrapure water is added into the solution C and mixed uniformly to form the solution D. 
     
     
         11 . The preparation method according to  claim 10 , wherein the centrifuging is performed twice. 
     
     
         12 . The preparation method according to  claim 2 , wherein the centrifuging is performed twice.