US 8,052,773 B2 · Manufacturing method of metal nanowire

Abstract

An object of this invention is to provide a manufacturing method of metal nanowire in which a length and a diameter can be uniformly controlled, metal nanowire having excellent form uniformity, and a transparent electric conductor exhibiting excellent conductivity and transparency by employing metal nanowire having excellent conductivity and transparency. A manufacturing method of metal nanowire which reduces a metal ion in a solution to form metal particles having a wire-form, wherein a nucleus forming process and a particle growth process after said nucleus forming process are provided, and said nucleus forming process reduces a metal ion to form reduced metal, which is directly precipitated on the surface of said particles formed in the said nucleus forming process or on the surface of particles having grown from said nucleus particles during a growth process, whereby metal particles are formed.

Claims6

Dependent claims

A method for producing a metal nanowire having a wire-form, comprising the following steps in that order:

(A) forming a nucleus metal particle by reducing a first metal ion contained in a metal salt solution (A) by adding the metal salt solution (A) to a solution comprising a reducing agent (A);
and
(B) growing the nucleus metal particle by direct precipitation of a metal formed by reducing a second metal ion contained in a metal salt solution (B) on a surface of the nucleus metal particle by adding the metal salt solution (B) and a solution comprising a reducing agent (B) into the solution obtained by step (A), wherein a molar ratio of metal salt in the metal salt solution (A) to the total metal salt in metal salt solution (A) and metal salt solution (B) is 10% or less.

Dependencies are inferred from the claim text.

Manufacturing method of metal nanowire

Life of this patent

Manufacturing method of metal nanowire

Life of this patent

Abstract

Claims6