2D-2D Heterostructured UNiMOF/g-C3N4 for Enhanced Photocatalytic H2 Production under Visible-Light Irradiation

作者：Cao, Aihui; Zhang, Lijuan; Wang, Yun; Zhao, Huijun; Deng, Hong; Liu, Xueming; Lin, Zhang; Su, Xintai; Yue, Fan^*

来源：ACS Sustainable Chemistry and Engineering, 2019, 7(2): 2492-2499.

DOI：10.1021/acssuschemeng.8b05396

• Ultrathin NiMOF
• Carbon nitride
• Heterojunction
• Photocatalytic hydrogen evolution

On the basis of ultrathin two-dimensional (2D) nickel metal organic framework (UNiMOF) nanoflakes and 2D g-C3N4 nanoflakes, fresh visible-light-driven 2D/2D heterostructure catalysts were designed, which were assembled with a simplistic electrostatic self-assembly process. The photocatalytic performance of UNiMOF/g-C3N4 for H-2 production was evaluated in visible light. The hydrogen evolution of 25.0% UNiMOF/g-C3N4 (UNG-25.0) heterojunction was 20.03 mu mol h(-1) which was greater than that of pure g-C3N4. In addition, the UNG composites also presented more excellent photocatalytic activity than that of bulk NiMOF/g-C3N4 (BNG) hybrid. This enhanced performance may depend on cooperative potentiation between UNiMOF and g-C3N4 efficiently lowering recombination of carriers. This work showed that constructing 2D-2D heterojunctions provides a feasible approach to obtain highly capable catalysts for photocatalytic decomposition of water.

• 出版日期2019-1-21
• 单位华南理工大学; 新疆大学