Synthetic method of silver nanowire
A synthesis method and technology of silver nanowires, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of complex operation and uneven morphology of silver nanowires, and achieve broad development prospects. , uniform diameter, good interaction effect
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[0028] The invention provides a kind of synthetic method of silver nanowire, comprises the following steps:
[0029] a) dissolving polyvinylpyrrolidone in an alcohol solvent, controlling the temperature below 40°C, adding silver nitrate and chloride and mixing evenly to obtain a mixed solution;
[0030] b) after sealing the mixed solution obtained in step a), performing a reaction to obtain silver nanowires.
[0031] In the invention, polyvinylpyrrolidone is firstly dissolved in an alcohol solvent, the temperature is controlled below 40 DEG C, and then silver nitrate and chloride are added and mixed uniformly to obtain a mixed solution. In the present invention, there is no special limitation on the source of the polyvinylpyrrolidone (PVP), and commercially available products well known to those skilled in the art can be used. In the present invention, the selective adsorption of the PVP can make the silver nanocrystals grow along a specific direction, which is beneficial to ...
Embodiment 1
[0048] (1) Add 40mL of glycerol into a three-necked flask, add 1g of PVP, and stir in a 60°C oil bath for 30min to completely dissolve the PVP; then take out the flask and cool it in ice water to lower the temperature of the solution to 40°C Next, 0.3 mL of silver nitrate (0.5 g) solution and 0.2 mL of sodium chloride (30 mg) solution were added and mixed uniformly to obtain a mixed solution.
[0049] (2) Transfer the mixed solution obtained in step (1) into a 50 mL polytetrafluoroethylene reactor, heat in an oven at 180° C. for 16 h, take it out and cool to room temperature to obtain silver nanowires (50 mL of silver nanowire solution).
[0050] The conversion efficiency of the synthesis method provided in Example 1 of the present invention is 74.8%, and the concentration of silver nanowires in the solution is 5.925 mg / mL.
Embodiment 2
[0052] Adopt the synthetic method that embodiment 1 provides, difference is: the consumption of all reagents is enlarged to original 10 times, other conditions are unchanged; Obtain silver nanowire (the silver nanowire solution of 500mL, refer to figure 1 Shown; Further precipitation of silver nanowires obtained, see figure 2 shown).
[0053] The transmission electron microscope picture of the silver nanowire obtained by the synthesis method provided by the embodiment of the present invention 2 can be found in image 3 shown by image 3 It can be seen that the above-mentioned silver nanowires are uniform in size, with a diameter of about 40 nm.
[0054] The conversion efficiency of the synthesis method provided in Example 2 of the present invention is 88.5%, and the concentration of silver nanowires in the solution is 7.025 mg / mL.
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