Method for producing composite particle dispersion, composite particle, and method for producing metal nanoparticle dispersion

摘要

A composite particle having a surface coverage of the surface of the dielectric particle with metal nanoparticles higher than before, a method for producing a composite particle dispersion capable of producing such a composite particle, a composite having such a composite particle, Provide methods of manufacturing complexes. A step of preparing a metal nanoparticle dispersion liquid containing negatively charged metal nanoparticles, a step of mixing the metal nanoparticle dispersion liquid and a dielectric particle dispersion liquid containing positively charged dielectric particles, Wherein the step of producing the metal nanoparticle dispersion liquid comprises preparing a liquid containing a conjugate base of at least one of malic acid and isocitric acid and a metal ion, reducing a metal ion in the liquid To produce metal nanoparticles and replacing the conjugate base of at least one of malic acid and isocitric acid in the liquid with a conjugate base of citric acid.