NOBLE METAL-CONTAINING NANOPARTICLE AND METHOD FOR PRODUCING THE SAME

PROBLEM TO BE SOLVED: To provide noble metal-containing nanoparticles and the like, in which a used amount of noble metals which constitutes the nanoparticle surface is reduced, and the nanoparticles contain polycrystals, and which are monodisperse and phase-separated.SOLUTION: There are provided phase-separated noble metal-containing nano particles, which contain one or more kinds of noble metal(s), contain polycrystals, and are monodisperse. The noble metal-containing nanoparticles can be produced by reacting first metal fine particles, a second metal compound, and an organic ligand. The noble metal-containing nanoparticle has a core-shell type structure and has an average particle size of 100 nm or less.SELECTED DRAWING: Figure 11 【課題】ナノ粒子の表面を構築する貴金属の使用量を低減し、及び該ナノ粒子は多結晶体を含み、単分散かつ相分離した貴金属含有ナノ粒子等の提供。【解決手段】相分離した貴金属含有ナノ粒子であって、１種以上の貴金属を含有し、多結晶体を含み、かつ、単分散である貴金属含有ナノ粒子であり、第１の金属微粒子と、第２の金属化合物と、有機配位子とを反応させることで製造できる貴金属含有ナノ粒子。貴金属含有ナノ粒子がコアシェル型構造であり、平均粒子径が１００ｎｍ以下である貴金属含有ナノ粒子。【選択図】図１１