Core-shell particles and use thereof
AssigneeNoritake Co., Limited
InventorsYoshiki Watanabe, Keiko Kato
Life of this patent
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Abstract
In a method for manufacturing core-shell particles including core particles and a shell, the constituent metal elements of the core particles and the shell are different from each other. A quinone-containing core particle dispersion containing at least core particles consisting of a first metal, hydroquinone (HQ), benzoquinone (BQ), and a second metal compound including a second metal element for making up the shell is prepared, and a reduction treatment is performed on the quinone-containing core particle dispersion, through addition of a reducing agent, to form a shell including the second metal element as a main constituent element, on the surface of the core particles. A mass ratio: HQ/BQ ratio of added hydroquinone (HQ) and benzoquinone (BQ) is 0.1 to 120.
Claims3
A method for manufacturing core-shell particles comprising core particles and a shell covering at least part of the core particles, main constituent metal elements of the core particles and the shell being different from each other, the method comprising:
- a step of preparing a quinone-containing core particle dispersion containing at least core particles consisting of a first metal, hydroquinone (HQ), benzoquinone (BQ), and a second metal compound including a second metal element for making up the shell;
- and
- a step of forming the shell including the second metal element as a main constituent element on the surface of the core particles by adding a reducing agent to perform a reduction treatment on the quinone-containing core particle dispersion,
- wherein a mass ratio:
- HQ/BQ ratio of the added hydroquinone (HQ) and benzoquinone (BQ) is 0.1 to 120.
Dependencies are inferred from the claim text.