Hybrid 0D–2D black phosphorus quantum dots–graphitic carbon nitride nanosheets for efficient hydrogen evolution

By Wanying Lei, Yang Mi, Rongjuan Feng, Ping Liu, Song Hu, Jiaguo Yu, Xinfeng Liu, J. Rodríguez, Jia‐Ou Wang, Lei Zheng and 4 more. Nano Energy, 2018

159 citations recorded by the source corpus.

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-C3N4) nanosheets to create a 0D-2D inorganic-organic hybrid via a conventional and cost–effective sonication approach. The as-prepared BPQDs/g-C3N4 hybrids display BPQD content-dependent performance in visible-light-driven hydrogen generation. 5 wt% BPQDs/g-C3N4 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-C3N4 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-C3N4 synergetically enhance the photoactivity and photostability. This study opens possibilities to create viable BP-based heterostructures for energy conversion and storage.

Subfields: Electrical and Electronic Engineering, Materials Chemistry, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/0ec7f6fd9b9dcc0b3fb7d6cce6cff5bd708372c8

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In Electrical and Electronic Engineering

1. Shaohua Shen
2. B. Martincigh
3. V. Nyamori
4. J. Kibet
5. Nicholas Rono

In Materials Chemistry

1. Wei Han
2. Shaohua Shen
3. B. Martincigh
4. V. Nyamori
5. J. Kibet
6. Nicholas Rono

In Renewable Energy, Sustainability and the Environment

1. Shaohua Shen
2. B. Martincigh
3. V. Nyamori
4. J. Kibet
5. Nicholas Rono

Citations in the corpus

• Red phosphorus decorated and doped TiO2 nanofibers for efficient photocatalytic hydrogen evolution from pure water (2019, background): “The P K-edge had two main features associated with P0 and P5+ states [58,59].”
• A review of the current status of graphitic carbon nitride (2020, background): “Undoubtedly, construction of heterojunctions such as, type II,[55,58] Schottky,[59] and Z-schemes,[60,61] enhance photo-driven reactions by reducing the diffusion path length of charges, lowering the recombination rate of photogenerated charges, and increasing the surface area of the photocatalyst.”