Surface oxygen vacancy
can greatly affect the properties of transition-metal
oxides. However, engineering oxygen vacancy-abundant transition-metal
oxides with high specific surface area (SSA) remains challenging.
At present, the generation of oxygen vacancies in metal oxides is
time-consuming and less environmentally friendly by chemical leaching
methods that usually require additional waste treatment. Herein, a
series of oxygen vacancy-abundant transition-metal oxides with high
SSA are constructed via a lattice refining strategy. This strategy
is realized by urea-assisted ball milling pyrolysis and is green,
efficient, and universal. The oxygen vacancies promote the mobility
of oxygen, leading to a boosted catalytic oxidation performance of
aromatic sulfides. Such a strategy provides an efficient approach
to manufacturing oxygen vacancies on transition-metal oxides, which
may be beneficial for various related applications as an effective
catalytic material.
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