Annealing method and nitrogen-doped metal oxide structure
AssigneeIndustry-University Cooperation Foundation Hanyang University Erica Campus
InventorsJin Ho BANG, Sang Uck LEE, Lanlee LEE, Suyoung HAN, Byung Wuk KANG, Heeeun KIM
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Abstract
An annealing method is provided. The annealing method includes preparing a metal oxide structure, annealing the metal oxide structure in a gas atmosphere including nitrogen to fabricate a metal compound structure, an oxygen content of which is lower than that of the metal oxide structure, from the metal oxide structure, and annealing the metal compound structure in a gas atmosphere including oxygen to fabricate a nitrogen-doped metal oxide structure, which has a specific surface area greater than that of the metal oxide structure, from the metal compound structure.
Claims20
An annealing method comprising:
- preparing a metal oxide structure;
- annealing the metal oxide structure in a gas atmosphere including nitrogen to fabricate a metal compound structure, an oxygen content of which is lower than that of the metal oxide structure, from the metal oxide structure;
- and
- annealing the metal compound structure in a gas atmosphere including oxygen to fabricate a nitrogen-doped metal oxide structure, which has a specific surface area greater than that of the metal oxide structure, from the metal compound structure.
A nitrogen-doped metal oxide comprising:
- a nitrogen-doped metal oxide structure,
- wherein the nitrogen-doped metal oxide structure has a porous structure, and
- wherein the porous structure is formed by a top-down method.
An annealing method comprising:
- preparing a metal oxide structure;
- annealing the metal oxide structure in a gas atmosphere including nitrogen to fabricate a metal compound structure from the metal oxide structure;
- and
- annealing the metal compound structure in a gas atmosphere including oxygen to fabricate a nitrogen-doped metal oxide structure from the metal compound structure,
- wherein an oxygen content of the metal compound structure is lower than that of the metal oxide structure, and
- wherein a nitrogen content of the nitrogen-doped metal oxide structure is lower than that of the metal compound structure.
Dependencies are inferred from the claim text.