Method of preparing core-shell structure nanoparticle using structure-guided combustion waves
AssigneeKorea University Research and Business Foundation
InventorsWon-joon CHOI, Tae-han YEO, Dong-joon SHIN
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Abstract
A method of synthesizing multi-shell structure nanoparticles includes uniformly distributing core nanoparticles to a first porous fuel membrane, coating the core nanoparticles fixed to the first porous fuel membrane with a fuel, and combusting the fuel coated on the core nanoparticles and the first porous fuel membrane to coat a first carbon film on surfaces of the core nanoparticles.
Claims13
A method of synthesizing multi-shell structure nanoparticles, the method comprising:
- uniformly distributing core nanoparticles to a first porous fuel membrane;
- coating the core nanoparticles fixed to the first porous fuel membrane with a fuel;
- and
- combusting the fuel coated on the core nanoparticles and the first porous fuel membrane to coat a first carbon film on surfaces of the core nanoparticles.
The method according to 2, wherein the metal oxide layer is a manganese dioxide, and
- the replacing the first carbon film with a metal oxide layer using a redox reaction to prepare preliminary nanoparticles comprises dipping the core nanoparticles with the first carbon film in an aqueous solution of KMnO4 to reduce the first carbon film into the metal oxide layer by a reduction/oxidation (redox) reaction of KMnO4 and carbon.
A method of fabricating an electrode including nanoparticles, the method comprising:
- uniformly distributing core nanoparticles to a first porous fuel membrane;
- coating the core nanoparticles fixed to the first porous fuel membrane with a fuel;
- combusting the fuel coated on the core nanoparticles and the first porous fuel membrane to coat the first carbon film on surfaces of the core nanoparticles;
- replacing the first carbon film with the metal oxide layer to produce preliminary nanoparticles;
- uniformly distributing the preliminary particles to a second porous fuel membrane;
- coating the preliminary nanoparticles fixed to the second porous fuel membrane with a fuel;
- and
- combusting the fuel coated on the preliminary nanoparticles and the second porous fuel membrane to coat a second carbon film on surfaces of the preliminary nanoparticles.
Dependencies are inferred from the claim text.