Embedding ultrafine metal oxide nanoparticles in monolayered metal-organic framework nanosheets enables efficient electrocatalytic oxygen evolution
The development of highly efficient electrocatalysts to reduce overpotentials is vital for accelerating the sluggish oxygen evolution reaction (OER) processes. Herein, we demonstrate ultrathin heterogeneous nanosheets as a promising OER electrocatalyst, which are composed of ultrafine CoFeOx nanopar...
| 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/10356/155169 |
| _version_ | 1826119428668915712 |
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| author | Zhang, Wang Wang, Yu Zheng, Han Li, Rui Tang, Yu-Jia Li, Boyuan Zhu, Chao You, Liming Gao, Min-rui Liu, Zheng Yu, Shu-Hong Zhou, Kun |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Zhang, Wang Wang, Yu Zheng, Han Li, Rui Tang, Yu-Jia Li, Boyuan Zhu, Chao You, Liming Gao, Min-rui Liu, Zheng Yu, Shu-Hong Zhou, Kun |
| author_sort | Zhang, Wang |
| collection | NTU |
| description | The development of highly efficient electrocatalysts to reduce overpotentials is vital for accelerating the sluggish oxygen evolution reaction (OER) processes. Herein, we demonstrate ultrathin heterogeneous nanosheets as a promising OER electrocatalyst, which are composed of ultrafine CoFeOx nanoparticles and a monolayered CoN4-based metal-organic framework (MOF) matrix. The embedding of such inorganic nanoparticles in the MOF lattice creates metal Co sites located at the CoFeOx/MOF interfaces. Structural characterization and analysis indicated a higher valence and changed 3d electronic configuration for the interfacial Co in contrast to the CoN4 sites. Furthermore, theoretical calculations reveal the high activity of interfacial Co sites for OER. Electrochemical studies confirm that the ultrathin heterogeneous nanosheets deposited on carbon cloth can achieve an excellent electrocatalytic OER performance with a low overpotential of 232 mV at a current density of 10 mA cm-2 with good stability. This work provides insights on the development of ultrathin OER heterocatalysts with highly active interfaces of inorganic units and MOFs. |
| first_indexed | 2024-10-01T04:59:50Z |
| format | Journal Article |
| id | ntu-10356/155169 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:59:50Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1551692022-02-11T06:34:14Z Embedding ultrafine metal oxide nanoparticles in monolayered metal-organic framework nanosheets enables efficient electrocatalytic oxygen evolution Zhang, Wang Wang, Yu Zheng, Han Li, Rui Tang, Yu-Jia Li, Boyuan Zhu, Chao You, Liming Gao, Min-rui Liu, Zheng Yu, Shu-Hong Zhou, Kun School of Mechanical and Aerospace Engineering School of Materials Science and Engineering Nanyang Environment and Water Research Institute Environmental Process Modelling Centre Engineering::Environmental engineering Metal−Organic Framework Ultrathin Heterogeneous Nanosheet The development of highly efficient electrocatalysts to reduce overpotentials is vital for accelerating the sluggish oxygen evolution reaction (OER) processes. Herein, we demonstrate ultrathin heterogeneous nanosheets as a promising OER electrocatalyst, which are composed of ultrafine CoFeOx nanoparticles and a monolayered CoN4-based metal-organic framework (MOF) matrix. The embedding of such inorganic nanoparticles in the MOF lattice creates metal Co sites located at the CoFeOx/MOF interfaces. Structural characterization and analysis indicated a higher valence and changed 3d electronic configuration for the interfacial Co in contrast to the CoN4 sites. Furthermore, theoretical calculations reveal the high activity of interfacial Co sites for OER. Electrochemical studies confirm that the ultrathin heterogeneous nanosheets deposited on carbon cloth can achieve an excellent electrocatalytic OER performance with a low overpotential of 232 mV at a current density of 10 mA cm-2 with good stability. This work provides insights on the development of ultrathin OER heterocatalysts with highly active interfaces of inorganic units and MOFs. Nanyang Technological University The authors acknowledge the Nanyang Environment and Water Research Institute (Core Fund), Nanyang Technological University, Singapore. 2022-02-11T06:34:14Z 2022-02-11T06:34:14Z 2020 Journal Article Zhang, W., Wang, Y., Zheng, H., Li, R., Tang, Y., Li, B., Zhu, C., You, L., Gao, M., Liu, Z., Yu, S. & Zhou, K. (2020). Embedding ultrafine metal oxide nanoparticles in monolayered metal-organic framework nanosheets enables efficient electrocatalytic oxygen evolution. ACS Nano, 14(2), 1971-1981. https://dx.doi.org/10.1021/acsnano.9b08458 1936-0851 https://hdl.handle.net/10356/155169 10.1021/acsnano.9b08458 31999429 2-s2.0-85079519374 2 14 1971 1981 en ACS nano © 2020 American Chemical Society. All rights reserved. |
| spellingShingle | Engineering::Environmental engineering Metal−Organic Framework Ultrathin Heterogeneous Nanosheet Zhang, Wang Wang, Yu Zheng, Han Li, Rui Tang, Yu-Jia Li, Boyuan Zhu, Chao You, Liming Gao, Min-rui Liu, Zheng Yu, Shu-Hong Zhou, Kun Embedding ultrafine metal oxide nanoparticles in monolayered metal-organic framework nanosheets enables efficient electrocatalytic oxygen evolution |
| title | Embedding ultrafine metal oxide nanoparticles in monolayered metal-organic framework nanosheets enables efficient electrocatalytic oxygen evolution |
| title_full | Embedding ultrafine metal oxide nanoparticles in monolayered metal-organic framework nanosheets enables efficient electrocatalytic oxygen evolution |
| title_fullStr | Embedding ultrafine metal oxide nanoparticles in monolayered metal-organic framework nanosheets enables efficient electrocatalytic oxygen evolution |
| title_full_unstemmed | Embedding ultrafine metal oxide nanoparticles in monolayered metal-organic framework nanosheets enables efficient electrocatalytic oxygen evolution |
| title_short | Embedding ultrafine metal oxide nanoparticles in monolayered metal-organic framework nanosheets enables efficient electrocatalytic oxygen evolution |
| title_sort | embedding ultrafine metal oxide nanoparticles in monolayered metal organic framework nanosheets enables efficient electrocatalytic oxygen evolution |
| topic | Engineering::Environmental engineering Metal−Organic Framework Ultrathin Heterogeneous Nanosheet |
| url | https://hdl.handle.net/10356/155169 |
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