2D/2D atomic double-layer WS₂/Nb₂O₅ shell/core nanosheets with ultrafast interfacial charge transfer for boosting photocatalytic H₂ evolution
Low-efficiency charge transfer is a critical factor to limit the photocatalytic H2 evolution activity of semiconductor photocatalysts. The interface design is a promising approach to achieve high charge transfer efficiency for photocatalysts. Herein, a new 2D/2D atomic double-layer WS2/Nb2O5 shell/...
| Main Authors: | , , , , , , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/156763 |
| _version_ | 1826119765786099712 |
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| author | Lin, Bo Chen, Hao Zhou, Yao Luo, Xiao Tian, Dan Yan, Xiaoqing Duan, Ruihuan Di, Jun Kang, Lixing Zhou, Aimin Yang, Guidong Li, Yonghui Zhou, Jiadong Liu, Zheng Liu, Fucai |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Lin, Bo Chen, Hao Zhou, Yao Luo, Xiao Tian, Dan Yan, Xiaoqing Duan, Ruihuan Di, Jun Kang, Lixing Zhou, Aimin Yang, Guidong Li, Yonghui Zhou, Jiadong Liu, Zheng Liu, Fucai |
| author_sort | Lin, Bo |
| collection | NTU |
| description | Low-efficiency charge transfer is a critical factor to limit the photocatalytic H2 evolution activity of
semiconductor photocatalysts. The interface design is a promising approach to achieve high charge transfer efficiency for photocatalysts. Herein, a new 2D/2D atomic double-layer WS2/Nb2O5 shell/core photocatalyst (DLWS/Nb2O5) is designed. The atom-resolved HAADF-STEM results unravel the presence
of an unusual 2D/2D shell/core interface in DLWS/Nb2O5. Taking advantage of the advanced
femtosecond-resolved ultrafast TAS spectra, the average lifetime of charge carriers for DLWS/Nb2O5
(180.97 ps) is considerably shortened as compared to that of Nb2O5 (230.50 ps), strongly indicating that
the 2D/2D shell/core interface enables DLWS/Nb2O5 to achieve ultrafast charge transfer from Nb2O5 to
atomic double-layer WS2, thus yielding a high photocatalytic H2 evolution rate of 237.6mmol/h, up to
10.8 times higher than that of pure Nb2O5 nanosheet. This study will open a new window for the development of high-efficient photocatalytic systems through the interface design. |
| first_indexed | 2024-10-01T05:05:28Z |
| format | Journal Article |
| id | ntu-10356/156763 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:05:28Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1567632023-02-28T20:02:58Z 2D/2D atomic double-layer WS₂/Nb₂O₅ shell/core nanosheets with ultrafast interfacial charge transfer for boosting photocatalytic H₂ evolution Lin, Bo Chen, Hao Zhou, Yao Luo, Xiao Tian, Dan Yan, Xiaoqing Duan, Ruihuan Di, Jun Kang, Lixing Zhou, Aimin Yang, Guidong Li, Yonghui Zhou, Jiadong Liu, Zheng Liu, Fucai School of Materials Science and Engineering School of Physical and Mathematical Sciences Science::Chemistry::Physical chemistry::Catalysis 2D/2D Shell/Core Interface Atomic Double-Layer WS₂ Nb₂O₅ Nanosheet Charge Transfer Photocatalytic H₂ Evolution Low-efficiency charge transfer is a critical factor to limit the photocatalytic H2 evolution activity of semiconductor photocatalysts. The interface design is a promising approach to achieve high charge transfer efficiency for photocatalysts. Herein, a new 2D/2D atomic double-layer WS2/Nb2O5 shell/core photocatalyst (DLWS/Nb2O5) is designed. The atom-resolved HAADF-STEM results unravel the presence of an unusual 2D/2D shell/core interface in DLWS/Nb2O5. Taking advantage of the advanced femtosecond-resolved ultrafast TAS spectra, the average lifetime of charge carriers for DLWS/Nb2O5 (180.97 ps) is considerably shortened as compared to that of Nb2O5 (230.50 ps), strongly indicating that the 2D/2D shell/core interface enables DLWS/Nb2O5 to achieve ultrafast charge transfer from Nb2O5 to atomic double-layer WS2, thus yielding a high photocatalytic H2 evolution rate of 237.6mmol/h, up to 10.8 times higher than that of pure Nb2O5 nanosheet. This study will open a new window for the development of high-efficient photocatalytic systems through the interface design. Ministry of Education (MOE) Submitted/Accepted version This work was funded by the China Postdoctoral Science Foundation (pre-station, No. 2019TQ0050), Applied Basic Research Program of Sichuan Province (No. 2020YJ0068), the China Postdoctoral Science Foundation (No. 2020M673186), National Natural Science Foundation of China (No. 22002014), National Natural Science Foundation of China (No. 11804248), Natural Science Foundation of Tianjin (No. 18JCQNJC03200). This work is also supported by MOE Tier 1 RG4/17 and MOE Tier 2 MOE2019-T2-2-105. Dr. Dan Tian gratefully acknowledged the financial support from the National Natural Science Foundation of China (No. 21971113). 2022-04-21T05:34:55Z 2022-04-21T05:34:55Z 2021 Journal Article Lin, B., Chen, H., Zhou, Y., Luo, X., Tian, D., Yan, X., Duan, R., Di, J., Kang, L., Zhou, A., Yang, G., Li, Y., Zhou, J., Liu, Z. & Liu, F. (2021). 2D/2D atomic double-layer WS₂/Nb₂O₅ shell/core nanosheets with ultrafast interfacial charge transfer for boosting photocatalytic H₂ evolution. Chinese Chemical Letters, 32(10), 3128-3132. https://dx.doi.org/10.1016/j.cclet.2021.03.057 1001-8417 https://hdl.handle.net/10356/156763 10.1016/j.cclet.2021.03.057 10 32 3128 3132 en RG4/17 MOE2019-T2-2-105 Chinese Chemical Letters © 2021 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. All rights reserved. This paper was published by Elsevier in Chinese Chemical Letters and is made available with permission of Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. application/pdf |
| spellingShingle | Science::Chemistry::Physical chemistry::Catalysis 2D/2D Shell/Core Interface Atomic Double-Layer WS₂ Nb₂O₅ Nanosheet Charge Transfer Photocatalytic H₂ Evolution Lin, Bo Chen, Hao Zhou, Yao Luo, Xiao Tian, Dan Yan, Xiaoqing Duan, Ruihuan Di, Jun Kang, Lixing Zhou, Aimin Yang, Guidong Li, Yonghui Zhou, Jiadong Liu, Zheng Liu, Fucai 2D/2D atomic double-layer WS₂/Nb₂O₅ shell/core nanosheets with ultrafast interfacial charge transfer for boosting photocatalytic H₂ evolution |
| title | 2D/2D atomic double-layer WS₂/Nb₂O₅ shell/core nanosheets with ultrafast interfacial charge transfer for boosting photocatalytic H₂ evolution |
| title_full | 2D/2D atomic double-layer WS₂/Nb₂O₅ shell/core nanosheets with ultrafast interfacial charge transfer for boosting photocatalytic H₂ evolution |
| title_fullStr | 2D/2D atomic double-layer WS₂/Nb₂O₅ shell/core nanosheets with ultrafast interfacial charge transfer for boosting photocatalytic H₂ evolution |
| title_full_unstemmed | 2D/2D atomic double-layer WS₂/Nb₂O₅ shell/core nanosheets with ultrafast interfacial charge transfer for boosting photocatalytic H₂ evolution |
| title_short | 2D/2D atomic double-layer WS₂/Nb₂O₅ shell/core nanosheets with ultrafast interfacial charge transfer for boosting photocatalytic H₂ evolution |
| title_sort | 2d 2d atomic double layer ws₂ nb₂o₅ shell core nanosheets with ultrafast interfacial charge transfer for boosting photocatalytic h₂ evolution |
| topic | Science::Chemistry::Physical chemistry::Catalysis 2D/2D Shell/Core Interface Atomic Double-Layer WS₂ Nb₂O₅ Nanosheet Charge Transfer Photocatalytic H₂ Evolution |
| url | https://hdl.handle.net/10356/156763 |
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