Method for manufacturing silver nanowires

摘要

Provided is a method for producing Ag nanowires, including, heating a precursor solution that includes: an Ag salt; a water-soluble polymer; a surfactant, or a halide of metal ions having a standard reduction potential of −0.1 to −0.9V as a metal catalyst; and a reduction solvent, to produce the Ag nanowires. According to this method, a time for synthesizing nanowires may be considerably decreased, and an amount of Ag precursor discarded without reaction may be effectively reduced. As a result, the Ag nanowires may be produced with high efficiency and mass-production thereof through a simple scale-up may be successfully achieved.

主权项

1. A method for producing Ag nanowire, comprising:
(a) preparing a first solution that contains an Ag salt and a first reduction solvent, and a second solution that contains a water-soluble polymer, a surfactant, a viscosity enhancer and a second reduction solvent; (b) heating the second solution; and (c) introducing the first solution to the second solution, to produce Ag nanowires, wherein among the second solution in operation (a), a content of the water-soluble polymer ranges from 1 to 15 wt. % and a content of the surfactant ranges from 0.005 to 1 wt. %, in operation (c), the first and the second solutions are mixed, so that a ratio by weight of the Ag salt of the first solution:the surfactant of the second solution ranges from 100:0.01 to 100:15, a content of the viscosity enhancer in the second solution is an amount such that a viscosity of a mixture containing the viscosity enhancer, the first reduction solvent and the second reduction solvent is 1.1 to 10 times a viscosity of a mixture of the first reduction solvent and the second reduction solvent at 25° C., and operation (c) is carried out under a non-agitated state in which no artificial agitation is performed, and a variation in flow rate or turbulence is not caused by an external device.