Mechanism insight into enhanced photocatalytic hydrogen production by nitrogen vacancy-induced creating built-in electric field in porous graphitic carbon nitride nanosheets

We purposefully develop a precursors-reforming strategy to exquisitely introduce an appropriate amount of N vacancies in the conjugation plane of porous g-C3N4 nanosheets. Most importantly, the mechanism for enhancing photocatalytic hydrogen evolution by the vacancy-induced generation of a built-in electric field is profoundly revealed.