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    • 7. 发明授权
    • Method for preparing water-soluble nanoparticles and their dispersions
    • 制备水溶性纳米粒子及其分散体的方法
    • US09028724B2
    • 2015-05-12
    • US13395827
    • 2010-09-14
    • Won Il SonEui Duk KimSeok Heon Oh
    • Won Il SonEui Duk KimSeok Heon Oh
    • H01B1/12C09C3/10C09C1/62C09C1/64C09D11/322C09D11/52
    • C09C3/10C01P2002/84C01P2004/04C09C1/62C09C1/627C09C1/644C09D11/322C09D11/52
    • Provided is a method for preparing an aqueous dispersion of metal nanoparticles having superior dispersibility and being sinterable at low temperature by modifying the surface of metal nanoparticles having hydrophobic groups with hydrophilic groups. Specifically, by treating the surface hydrophobic groups of the metal nanoparticles with a surface modification solution containing a surfactant and a wetting-dispersing agent, the treatment throughput can be improved about 10-fold and the particles can be monodispersed without agglomeration. Further, by using an antioxidant and a ligand removal agent in the solution, denaturation and oxidation of the particles can be prevented and the high-boiling-point hydrophobic ligands can be eliminated effectively. The hydrophilically treated metal nanoparticles may be dispersed in an aqueous-based solvent to prepare a metal ink sinterable at low temperature.
    • 本发明提供了通过改性具有亲水基团的疏水基团的金属纳米粒子的表面,制备具有优异分散性并在低温下烧结的金属纳米颗粒的水性分散体的方法。 具体地说,通过用含有表面活性剂和润湿分散剂的表面改性溶液处理金属纳米颗粒的表面疏水性基团,处理量可以提高约10倍,并且颗粒可以单分散而不凝聚。 此外,通过在溶液中使用抗氧化剂和配体去除剂,可以防止颗粒的变性和氧化,并且可以有效地消除高沸点疏水性配体。 亲水处理的金​​属纳米颗粒可以分散在水基溶剂中以制备在低温下可烧结的金属油墨。