BM/CNNs heterojunctions were obtained by an in situ solvothermal method.
2D CNNs are superior to CN as photocatalysts and supporting materials.
The photocatalytic hydrogen evolution of BM/CNNs has been first studied.
The photocatalytic disinfection of bacteria by BM/CNNs has been first studied.
The photocatalytic mechanism of BM/CNNs heterojunction was described.