摘要
Metallic Ni bridged Ni S@mesoporous carbon nitride hybrids were for the first time fabricated through a one-pot electroless-assisted hydrothermal method.The intimate Ni bridge between the interface of mesoporous carbon nitride and Ni S was confirmed by HRTEM and in-depth XPS analysis using an Ar+-cluster sputtering gun and a possible mechanism was put forward to elucidate the formation process of the unique structure.Without adding any noble metals as cocatalysts,the optimized catalyst 10%NiS/mCN-160-12 showed a H2 evolution rate of 1419μmol·g^-1·h^-1,which is about 34 and 14 fold higher than that of bare mesoporous carbon nitride and Ni S,respectively.The dramatically enhanced photocatalytic performance was mainly ascribed to the synergistic effect of Ni S cocatalyst loading and the formation of metallic Ni between the interface of mesoporous carbon nitride and Ni S,which served as a charge-transfer bridge to facilitate the transfer and separation of photo-induced electron-hole pairs.
基金
financial support of the project from the National Natural Science Foundation of Shanghai(19ZR1403500)
NNSFC(Project 21373054)
the Natural Science Foundation of Shanghai Science and Technology Committee(19DZ2270100)。
