Annealing method and nitrogen-doped metal oxide structure

摘要

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.