Nitrogen vacancies g‐C ₃ N ₄ /BiOBr S-scheme heterojunction with Pd for efficient photocatalytic H ₂ O ₂ production

under simulated sunlight irradiation. On the basis of the consequence of x-ray photoelectron spectroscopy and ultraviolet visible spectrophotometer diffuse reflection spectroscopy, the charge transfer mechanism conforms to a S-scheme heterojunction system, which is conducive to promote the separation and transfer of electrons while preserving excellent redox capacity. The existence of nitrogen vacancies provides active sites for reaction, and Pd nanoparticles strengths the response scope and absorption capacity of sunlight. This work establishes a reasonable strategy for catalyst applied to the photocatalytic hydrogen peroxide evaluation.