2D–2D Heterostructured UNiMOF/g‑C<sub>3</sub>N<sub>4</sub> for Enhanced Photocatalytic H<sub>2</sub> Production\nunder Visible-Light Irradiation
Aihui Cao (6184427)Lijuan Zhang (36878)Yun Wang (32846)Huijun Zhao (442715)Hong Deng (115865)Xueming Liu (488812)Zhang Lin (1458301)Xintai Su (1817680)Fan Yue (2475970)
Abstract
On\nthe basis of ultrathin two-dimensional (2D) nickel metal organic\nframework (UNiMOF) nanoflakes and 2D g-C<sub>3</sub>N<sub>4</sub> nanoflakes,\nfresh visible-light-driven 2D/2D heterostructure catalysts were designed,\nwhich were assembled with a simplistic electrostatic self-assembly\nprocess. The photocatalytic performance of UNiMOF/g-C<sub>3</sub>N<sub>4</sub> for H<sub>2</sub> production was evaluated in visible light.\nThe hydrogen evolution of 25.0% UNiMOF/g-C<sub>3</sub>N<sub>4</sub> (UNG-25.0) heterojunction was 20.03 μmol h<sup>–1</sup>, which was greater than that of pure g-C<sub>3</sub>N<sub>4</sub>. In addition, the UNG composites also presented more excellent photocatalytic\nactivity than that of bulk NiMOF/g-C<sub>3</sub>N<sub>4</sub> (BNG)\nhybrid. This enhanced performance may depend on cooperative potentiation\nbetween UNiMOF and g-C<sub>3</sub>N<sub>4</sub> efficiently lowering\nrecombination of carriers. This work showed that constructing 2D–2D\nheterojunctions provides a feasible approach to obtain highly capable\ncatalysts for photocatalytic decomposition of water.
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