Metallic colloid and functional material produced therefrom
AssigneeTanaka Kikinzoku Kogyo K.K.
InventorsHirofumi Nakagawa, Masayuki Saito
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Abstract
A metallic colloid used in the production of various functional materials including catalytic materials, optical materials, electric materials and magnetic materials. The metallic colloid contains a solvent selected from water or a mixed solvent of water and an organic solvent; cluster particles comprising one or more metals or metal oxides; and a protective agent for protecting the cluster particles. The protective agent is an organic compound comprising carbon, and at least any one of nitrogen, oxygen and hydrogen. The organic compound is evaporable or sublimable at a temperature of 200° C. or below.
Claims20
A metallic colloid comprising:
- a solvent selected from water or a mixed solvent of water and an organic solvent;
- cluster particles comprising one or more metals or metal oxides;
- and a protective agent for protecting said cluster particles, wherein said protective agent is an organic compound comprising carbon, and at least any one selected from the group consisting of nitrogen, oxygen and hydrogen, said organic compound being evaporable or sublimable at a temperature of 200° C. or below.
11 The metallic colloid according to claim 2, wherein the protective agent is dimethyl lauryl amine oxide, methyl myristyl amine oxide, dimethyl stearyl amine oxide, di(hydroxyethyl) lauryl amine oxide, di(hydroxyethyl) amine oxide, dimethyl lauryl ethoxy amine oxide, dimethyl allyl amine oxide, dimethyl ethyl amine oxide, dimethyl propyl amine oxide, dimethyl butyl amine oxide, dimethyl pentyl amine oxide, methyl hexyl amine oxide, dimethyl octyl amine oxide, or dimethyl decyl amine oxide.
The metallic colloid according claim 11, wherein the cluster particles are formed of at least one metal selected from a group consisting of gold, platinum, silver, palladium, rhodium, iridium, ruthenium and osmium, or at least one oxide selected from a group consisting of the metal oxides of those metals.
Dependencies are inferred from the claim text.