The DOI matches its Crossref record; 68 of the 68 references it cites were found in a registry or an index.
Integrating 2D/2D CdS/α-Fe2O3 ultrathin bilayer Z-scheme heterojunction with metallic β-NiS nanosheet-based ohmic-junction for efficient photocatalytic H2 evolution
Abstract
Abstract Water splitting for hydrogen production on noble metal-free photocatalysts remains a big challenge. Herein, we present for the first time a 2-dimensional/2-dimensional (2D/2D) Z-scheme photocatalyst formed by in situ growing CdS nanosheets on α-Fe2O3 nanosheets. The former was additionally modified with metallic β-NiS cocatalyst, which creates a Ohmic-based heterojunction and functions as hydrogen-evolution sites. The resultant β-NiS-decorated CdS/α-Fe2O3 ultrathin 2D/2D heterojunction showed a remarkable hydrogen production rate of 45 mmol h−1 g−1 and a high quantum efficiency of 46.9 % at 420 nm. The excellent photocatalytic performance is attributed to: (1) intimate and large interfaces between CdS and α-Fe2O3 nanosheets for facilitated charge transfer, (2) promoted charge separation in the Z-scheme heterojunction, and (3) large quantity of Ohmic-junction hydrogen-evolution sites over metallic β-NiS cocatalyst. Overall, this work demonstrates a promising strategy for improving charge dynamics and hydrogen-production efficiency, through rational design and integration of multiple built-in electric fields over 2D semiconductor nanosheets.
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Cites
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Self-citationEarth-abundant cocatalysts for semiconductor-based photocatalytic water splitting
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Self-citationCocatalysts for Selective Photoreduction of CO2into Solar Fuels
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Cited by
A review on 2D MoS2 cocatalysts in photocatalytic H2 production
Liang, Z., Shen, R., Ng, Y. H., Zhang, P., Xiang, Q., & Li, X. (2020) · Journal of Materials Science & Technology · doi:10.1016/j.jmst.2020.04.032 · Cited by 438
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Metadata
- Authors
- Shen, R., Zhang, L., Chen, X., Jaroniec, M., Li, N., & Li, X.
- Venue
- Applied Catalysis B: Environmental
- Publisher
- Elsevier BV
- Published
- 2020-06
- Volume
- 266
- Pages
- 118619
- ISSN
- 0926-3373 (ISSN-L)
- OpenAlex
- W2999135792
- Cited by
- 265
- References
- 68
- FWCI
- 9.15
- Type
- journal article
- Language
- en
- Open access
- closed
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- Shen, R., Zhang, L., Chen, X., Jaroniec, M., Li, N., & Li, X. (2020). Integrating 2D/2D CdS/α-Fe2O3 ultrathin bilayer Z-scheme heterojunction with metallic β-NiS nanosheet-based ohmic-junction for efficient photocatalytic H2 evolution. Applied Catalysis B: Environmental. https://doi.org/10.1016/j.apcatb.2020.118619
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