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Hybrid 0D–2D black phosphorus quantum dots–graphitic carbon nitride nanosheets for efficient hydrogen evolution.
- Source :
- Nano Energy; Aug2018, Vol. 50, p552-561, 10p
- Publication Year :
- 2018
-
Abstract
- As an emerging post-graphene two-dimensional (2D) nanomaterial, black phosphorus (BP) is attracting a great deal of current attention for the direct conversion of solar energy into solar fuels on account of its unique tunable direct-bandgap and high charge-carrier mobility. Herein, for the first time, we immobilize BP quantum dots (BPQDs) onto graphitic carbon nitride (g-C 3 N 4 ) nanosheets to create a 0D-2D inorganic-organic hybrid via a conventional and cost–effective sonication approach. The as-prepared BPQDs/g-C 3 N 4 hybrids display BPQD content-dependent performance in visible-light-driven hydrogen generation. 5 wt% BPQDs/g-C 3 N 4 with cyclability exhibits the greatest hydrogen evolution rate of 271 μmol h −1 g −1 that is 5.6 and 4.2 times greater than that of pristine g-C 3 N 4 and BPQDs, respectively. We demonstrate that the type-II band alignment, the formation of phosphorus–carbon bonds and the efficient interfacial charge separation between well-dispersed BPQDs and g-C 3 N 4 synergetically enhance the photoactivity and photostability. This study opens possibilities to create viable BP-based heterostructures for energy conversion and storage. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 22112855
- Volume :
- 50
- Database :
- Supplemental Index
- Journal :
- Nano Energy
- Publication Type :
- Academic Journal
- Accession number :
- 130600819
- Full Text :
- https://doi.org/10.1016/j.nanoen.2018.06.001