Method of manufacturing core-shell particles by a microwave plasma process
Assignee6K Inc.
InventorsKamal Hadidi, Gregory Wrobel
Life of this patent
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Abstract
Methods are disclosed for producing core-shell particles having a uniform size using a microwave plasma process. More particularly, methods of the present technology are used to manufacture core-shell particles having a core at least partially surrounded by a shell. The core and shell of the core-shell particles are chemically distinct. Methods of the present technology occur within a plasma chamber of a microwave plasma reactor and a microwave formed plasma is utilized to vaporize core precursor material.
Claims19
A method of manufacturing core-shell particles by a microwave plasma process, the core-shell particles having a core at least partially surrounded by a shell, wherein core material and shell material are chemically distinct;
- the method comprising:
- providing a microwave plasma reactor at least having a plasma chamber;
- introducing a gas or vapor to the plasma chamber;
- generating a plasma with a microwave energy source within the plasma chamber using the gas or vapor to create a microwave formed plasma;
- injecting core precursor material into the microwave formed plasma within the plasma chamber;
- vaporizing of the core precursor material within the plasma chamber by the microwave formed plasma;
- forming a plurality of cores from the vaporized core precursor material;
- introducing shell precursor material to the plurality of cores;
- and
- forming a plurality of core-shell particles, each core-shell particle having one core at least partially surrounded by shell material;
- wherein the plurality of core-shell particles comprises a cadmium containing core and a zinc containing shell.
A method of manufacturing core-shell particles having a core at least partially surrounded by a shell, wherein core material and shell material are chemically distinct;
- the method comprising:
- providing a core precursor material to a material feeding system, the core precursor material being in the form of particles;
- introducing a gas or vapor into a first plasma chamber;
- generating a plasma in the first plasma chamber using a first energy source, the first energy source in communication with the first plasma chamber and disposed to apply energy to the gas or vapor in the first plasma chamber to form the plasma;
- injecting the core precursor material from the material feeding system into the plasma;
- vaporizing the core precursor material to form a plurality of cores from the injected core precursor material;
- cooling the plurality of cores downstream of the first plasma chamber;
- and
- introducing a shell precursor material to the plurality of cores after cooling to form a plurality of core-shell particles, each core-shell particle having a shell covered core.
Dependencies are inferred from the claim text.