PLATINUM NANOPARTICLE-MIXED POWDER AND METHOD FOR PRODUCING THE POWDER, AND PLATINUM NANOPARTICLE-CONTAINING CERAMIC-MOLDED ARTICLE AND METHOD FOR PRODUCING THE ARTICLE
To provide: a ceramic-molded article that does not cause the decline of anti-bacterial and anti-virus effects even if the surface of the article is damaged and degraded by the usage of it for a long period； and a platinum nanoparticle-mixed powder for achieving the article and a method for producing the powder.SOLUTION: In a platinum nanoparticle-mixed powder, platinum nanoparticles having an average particle diameter of 1-10 nm are uniformly mixed in a powder (ceramic powder) having an average particle diameter of 0.1-10 μm. A method for producing the platinum nanoparticle-mixed powder includes drying a platinum nanoparticle-mixed slurry obtained by mixing the powder (ceramic powder) having the average particle diameter of 0.1-10 μm with the platinum nanoparticles having the average particle diameter of 1-10 nm. In the ceramic-molded article 10 containing the platinum nanoparticles and obtained through the molding by using a predetermined ceramic powder, 0.1-20% by weight of the platinum nanoparticle-mixed powder is uniformly mixed in the predetermined ceramic powder.SELECTED DRAWING: Figure 1【課題】長年使用して表面が傷ついたり劣化しても、抗菌、抗ウィルス効果が衰退することがないセラミックス成形品と、これを実現するための白金ナノ粒子混合パウダーとその製造方法の提供。【解決手段】平均粒径１～１０ｎｍの白金ナノ粒子が、平均粒径０．１～１０μｍの粉体（セラミックパウダー）中に均一に混合されている白金ナノ粒子混合パウダー。又、平均粒径０．１～１０μｍの粉体（セラミックパウダー）と平均粒径１～１０ｎｍの白金ナノ粒子を含むコロイド溶液を混合させた白金ナノ粒子混合スラリーを乾燥させる白金ナノ粒子混合パウダーの製造方法。そして、所定のセラミック・パウダーを用いて成形するセラミックス成形品において、上記白金ナノ粒子混合パウダーが、前記所定のセラミック・パウダーに対して、重量％で０．１～２０％均一に混合されている白金ナノ粒子を含むセラミックス成形体１０。【選択図】図１
