A Tandem 0D/2D/2D NbS2 Quantum Dot/Nb2O5 Nanosheet/g-C3N4 Flake System with Spatial Charge–Transfer Cascades for Boosting Photocatalytic Hydrogen Evolution

Bo Lin; Zihao Chen; Pin Song; Haishi Liu; Lixing Kang; Jun Di; Xiao Luo; Longqing Chen; Chao Xue; Bowen Ma; Guidong Yang; Jun Tang; Jiadong Zhou; Zheng Liu; Fucai Liu

doi:10.1002/smll.202003302

A Tandem 0D/2D/2D NbS₂ Quantum Dot/Nb₂O₅ Nanosheet/g-C₃N₄ Flake System with Spatial Charge–Transfer Cascades for Boosting Photocatalytic Hydrogen Evolution

Bo Lin, Zihao Chen, Pin Song, Haishi Liu, Lixing Kang, Jun Di, Xiao Luo, Longqing Chen, Chao Xue, Bowen Ma, Guidong Yang, Jun Tang, Jiadong Zhou^*, Zheng Liu^*, Fucai Liu^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

47 Citations (Scopus)

Abstract

The relatively high recombination rate of charges remains the most critical limiting factor for solar-driven water splitting for hydrogen generation. Herein, a tandem 0D/2D/2D NbS₂ quantum dot/Nb₂O₅ nanosheet/g-C₃N₄ flake (NSNOCN) system is designed. Owing to the unique spatial-arrangement and elaborate morphology of 0D NbS₂, 2D Nb₂O₅, and 2D g-C₃N₄ in the newly designed NSNOCN, plenty of spatial charge–transfer cascades from g-C₃N₄ to NbS₂ via Nb₂O₅ are formed to accelerate separation and transfer of charges significantly, thus contributing to a high photocatalytic H₂ generation rate of 13.99 mmol h⁻¹ g⁻¹ (an apparent quantum efficiency of 10.8% at 420 nm), up to 107.6 and 43.7 times by contrast with that of g-C₃N₄ and Nb₂O₅, respectively. This work can provide a new platform in the design of artificial photocatalytic systems with high charge–transfer efficiency.

Original language	English
Article number	2003302
Journal	Small
Volume	16
Issue number	42
DOIs	https://doi.org/10.1002/smll.202003302
Publication status	Published - Oct 1 2020
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2020 Wiley-VCH GmbH

ASJC Scopus Subject Areas

Biotechnology
General Chemistry
Biomaterials
General Materials Science
Engineering (miscellaneous)

Keywords

g-C N flakes
NbS quantum dots (QDs)
photocatalytic H evolution
spatial charge–transfer cascades
tandem 0D/2D/2D systems

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1002/smll.202003302

Cite this

Lin, B., Chen, Z., Song, P., Liu, H., Kang, L., Di, J., Luo, X., Chen, L., Xue, C., Ma, B., Yang, G., Tang, J., Zhou, J., Liu, Z., & Liu, F. (2020). A Tandem 0D/2D/2D NbS₂ Quantum Dot/Nb₂O₅ Nanosheet/g-C₃N₄ Flake System with Spatial Charge–Transfer Cascades for Boosting Photocatalytic Hydrogen Evolution. Small, 16(42), Article 2003302. https://doi.org/10.1002/smll.202003302

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abstract = "The relatively high recombination rate of charges remains the most critical limiting factor for solar-driven water splitting for hydrogen generation. Herein, a tandem 0D/2D/2D NbS2 quantum dot/Nb2O5 nanosheet/g-C3N4 flake (NSNOCN) system is designed. Owing to the unique spatial-arrangement and elaborate morphology of 0D NbS2, 2D Nb2O5, and 2D g-C3N4 in the newly designed NSNOCN, plenty of spatial charge–transfer cascades from g-C3N4 to NbS2 via Nb2O5 are formed to accelerate separation and transfer of charges significantly, thus contributing to a high photocatalytic H2 generation rate of 13.99 mmol h−1 g−1 (an apparent quantum efficiency of 10.8% at 420 nm), up to 107.6 and 43.7 times by contrast with that of g-C3N4 and Nb2O5, respectively. This work can provide a new platform in the design of artificial photocatalytic systems with high charge–transfer efficiency.",

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author = "Bo Lin and Zihao Chen and Pin Song and Haishi Liu and Lixing Kang and Jun Di and Xiao Luo and Longqing Chen and Chao Xue and Bowen Ma and Guidong Yang and Jun Tang and Jiadong Zhou and Zheng Liu and Fucai Liu",

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