Refining the band structure of BiOBr nanosheets through the synergetic effect of VO43− ions replacement and oxygen vacancies for promoted visible-light-driven photocatalysis

The band structure of BiOBr nanosheets is regulated by the oxygen vacancies and VO₄³⁻ ions replacement. The BiOBr nanosheets possess defective states and a more negative conduction band potential, promoting visible-light photocatalytic activity.