Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 7, Issue 2, Pages 2492-2499Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.8b05396
Keywords
Ultrathin NiMOF; Carbon nitride; Heterojunction; Photocatalytic hydrogen evolution
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Funding
- National Natural Science Foundation of China [21777046]
- Guangdong Innovative and Entrepreneurial Research Team Program [2016ZT06N569]
- Guangzhou Scien-ce and Technology Project [201803030002]
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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.
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