Design of a photocatalyst combining graphdiyne–Cu/NiCrO3 with Cu as an interfacial charge-transfer bridge and investigation of its photocatalytic hydrogen evolution performance

The electrons move from graphdiyne to Cu due to its higher Fermi level, then react with NiCrO₃ valence band vacancies. NiCrO₃ conduction band electrons reduce H₂, while graphdiyne holes oxidize TEOA.