Quick and efficient synthesis method for silver nanowires

Abstract

The invention discloses a quick and efficient synthesis method for silver nanowires. The method comprises the following steps of: 1) introducing inert gas into a reactor, adding 2 volume parts of glycol into the reactor, and stirring, heating, condensing and refluxing the glycol; quickly adding 1 volume part of glycol solution of silver nitrate at molar concentration of between 0.1 and 0.5m into the reactor; slowly dropwise adding 1 to 2 volume parts of PVP at molar concentration of between 0.15 and 0.75m and 4 to 32 mu m of glycol solution of MnCl2 at the same time; and reacting and cooling the mixture to the room temperature to obtain reaction mother liquor of the silver nanowires; and 2) transferring the reaction mother liquor of the silver nanowires into a centrifugal tube; adding acetone into the centrifugal tube and performing centrifugal separation to remove supernatant and retain precipitate; adding de-ionized water or ethanol into the centrifugal tube and performing centrifugal separation to remove the supernatant and retain precipitate, and repeating the operation for 1 to 3 times; and extracting and dispersing the precipitate with ethanol to obtain the silver nanowires. The method shortens the reaction time and also has high selectivity for the synthesis of the silver nanowires under conditions of high concentration.

Description

technical field [0001] The invention relates to the technical field of nanomaterial synthesis, in particular to a rapid and efficient synthesis method of silver nanowires. Background technique [0002] Silver nanowires not only have the high electrical and thermal conductivity of ordinary silver, but also have the characteristics of high specific surface area at nanometer size, excellent optical properties, and unique quantum effects. Therefore, the research on the synthesis of silver nanowires has also attracted widespread attention and attention, especially the research on its large-scale and efficient synthesis process, which has great significance and influence on the real large-scale commercial application of silver nanowires. [0003] In recent years, many researchers have carried out research on the synthesis of silver nanowires and achieved many results. At present, the most widely used synthesis method of silver nanowires is the method proposed by Xia et al. to red...

AI Technical Summary

Problems solved by technology

However, the existing technical conditions still have a certain distance from the real large-scale industrial production of silver nanowires.

The main problem is that the existing methods are always limited by factors such as low reaction concentration, long reaction time, and low selectivity of nanowires.

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