Unraveling the dominance of intrinsic catalytic activities over electrical properties in electrocatalytic performance of two-dimensional chromium chalcogenide nanosheets
In this study, we synthesized a new category of materials, 2D Cr2X3 (where X = S, Se, and Te), using an APCVD method. By leveraging the same space group and identical exposed facets of the as-synthesized Cr2X3 nanoflakes, we compared their catalytic performance for HER and electrical properties to u...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/173161 |
| _version_ | 1811693604843814912 |
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| author | Yang, Jiefu Zheng, Mei Wu, Yao Le Goualher, Frédéric Di, Jun Salim, Teddy Deng, Ya Zhu, Chao Guo, Shasha Tang, Bijun Li, Shuzhou Liu, Zheng |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Yang, Jiefu Zheng, Mei Wu, Yao Le Goualher, Frédéric Di, Jun Salim, Teddy Deng, Ya Zhu, Chao Guo, Shasha Tang, Bijun Li, Shuzhou Liu, Zheng |
| author_sort | Yang, Jiefu |
| collection | NTU |
| description | In this study, we synthesized a new category of materials, 2D Cr2X3 (where X = S, Se, and Te), using an APCVD method. By leveraging the same space group and identical exposed facets of the as-synthesized Cr2X3 nanoflakes, we compared their catalytic performance for HER and electrical properties to unveil the contribution of electrical conductivity in the overall performance. A descending trend in HER activities from Cr2S3 to Cr2Se3, and Cr2Te3 was found, as evidenced by the increasing overpotentials and decreasing current densities at the same overpotential. Interestingly, electrical properties showed an improving trend from Cr2S3 to Cr2Se3, and Cr2Te3, as revealed by IDS-VG and IDS-VDS tests based on FET devices, respectively. The primary factor affecting overall catalytic performance was found to be intrinsic catalytic activities rather than electrical properties, as supported by DFT calculations. These insights emphasize that the focus of harnessing intrinsic catalytic activities when exploring 2D electrocatalysts. |
| first_indexed | 2024-10-01T06:54:20Z |
| format | Journal Article |
| id | ntu-10356/173161 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:54:20Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1731612024-01-19T15:46:41Z Unraveling the dominance of intrinsic catalytic activities over electrical properties in electrocatalytic performance of two-dimensional chromium chalcogenide nanosheets Yang, Jiefu Zheng, Mei Wu, Yao Le Goualher, Frédéric Di, Jun Salim, Teddy Deng, Ya Zhu, Chao Guo, Shasha Tang, Bijun Li, Shuzhou Liu, Zheng School of Materials Science and Engineering School of Electrical and Electronic Engineering The Photonics Institute Facility for Analysis, Characterization, Testing and Simulation (FACTS) CNRS International NTU THALES Research Alliances Engineering::Mechanical engineering Two-Dimensional Electrocatalysts Intrinsic Catalytic Activity In this study, we synthesized a new category of materials, 2D Cr2X3 (where X = S, Se, and Te), using an APCVD method. By leveraging the same space group and identical exposed facets of the as-synthesized Cr2X3 nanoflakes, we compared their catalytic performance for HER and electrical properties to unveil the contribution of electrical conductivity in the overall performance. A descending trend in HER activities from Cr2S3 to Cr2Se3, and Cr2Te3 was found, as evidenced by the increasing overpotentials and decreasing current densities at the same overpotential. Interestingly, electrical properties showed an improving trend from Cr2S3 to Cr2Se3, and Cr2Te3, as revealed by IDS-VG and IDS-VDS tests based on FET devices, respectively. The primary factor affecting overall catalytic performance was found to be intrinsic catalytic activities rather than electrical properties, as supported by DFT calculations. These insights emphasize that the focus of harnessing intrinsic catalytic activities when exploring 2D electrocatalysts. Ministry of Education (MOE) Submitted/Accepted version This work was supported by the Singapore Ministry of Education AcRF Tier 2 (MOE2019-T2-2-105), AcRF Tier 1 RG4/17, and RG161/19. 2024-01-16T01:12:51Z 2024-01-16T01:12:51Z 2024 Journal Article Yang, J., Zheng, M., Wu, Y., Le Goualher, F., Di, J., Salim, T., Deng, Y., Zhu, C., Guo, S., Tang, B., Li, S. & Liu, Z. (2024). Unraveling the dominance of intrinsic catalytic activities over electrical properties in electrocatalytic performance of two-dimensional chromium chalcogenide nanosheets. Applied Catalysis B: Environmental, 343, 123478-. https://dx.doi.org/10.1016/j.apcatb.2023.123478 0926-3373 https://hdl.handle.net/10356/173161 10.1016/j.apcatb.2023.123478 2-s2.0-85178449233 343 123478 en MOE2019-T2-2-105 RG4/17 RG161/19 Applied Catalysis B: Environmental © 2023 Elsevier B.V. All rights reserved. This article may be downloaded for personal use only. Any other use requires prior permission of the copyright holder. The Version of Record is available online at http://doi.org/10.1016/j.apcatb.2023.123478. application/pdf |
| spellingShingle | Engineering::Mechanical engineering Two-Dimensional Electrocatalysts Intrinsic Catalytic Activity Yang, Jiefu Zheng, Mei Wu, Yao Le Goualher, Frédéric Di, Jun Salim, Teddy Deng, Ya Zhu, Chao Guo, Shasha Tang, Bijun Li, Shuzhou Liu, Zheng Unraveling the dominance of intrinsic catalytic activities over electrical properties in electrocatalytic performance of two-dimensional chromium chalcogenide nanosheets |
| title | Unraveling the dominance of intrinsic catalytic activities over electrical properties in electrocatalytic performance of two-dimensional chromium chalcogenide nanosheets |
| title_full | Unraveling the dominance of intrinsic catalytic activities over electrical properties in electrocatalytic performance of two-dimensional chromium chalcogenide nanosheets |
| title_fullStr | Unraveling the dominance of intrinsic catalytic activities over electrical properties in electrocatalytic performance of two-dimensional chromium chalcogenide nanosheets |
| title_full_unstemmed | Unraveling the dominance of intrinsic catalytic activities over electrical properties in electrocatalytic performance of two-dimensional chromium chalcogenide nanosheets |
| title_short | Unraveling the dominance of intrinsic catalytic activities over electrical properties in electrocatalytic performance of two-dimensional chromium chalcogenide nanosheets |
| title_sort | unraveling the dominance of intrinsic catalytic activities over electrical properties in electrocatalytic performance of two dimensional chromium chalcogenide nanosheets |
| topic | Engineering::Mechanical engineering Two-Dimensional Electrocatalysts Intrinsic Catalytic Activity |
| url | https://hdl.handle.net/10356/173161 |
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