Cobalt nitride as a novel cocatalyst to boost photocatalytic CO₂ reduction
Photocatalytic CO₂ reduction has been regarded as an appealing pathway for CO₂ conversion to hydrocarbon fuels. To boost the CO₂ photoreduction performance, developing suitable cocatalyst on the photocatalysts is an efficient strategy. Herein, Co₂N is employed as novel noble-metal-free cocatalyst to...
| 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/10356/154718 |
| _version_ | 1824454855685570560 |
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| author | Di, Jun Chen, Chao Zhu, Chao Song, Pin Duan, Meilin Xiong, Jun Long, Ran Xu, Manzhang Kang, Lixing Guo, Shasha Chen, Shuangming Chen, Hailong Chi, Zhen Weng, Yu-Xiang Li, Huaming Song, Li Wu, Minghong Yan, Qingyu Li, Shuzhou Liu, Zheng |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Di, Jun Chen, Chao Zhu, Chao Song, Pin Duan, Meilin Xiong, Jun Long, Ran Xu, Manzhang Kang, Lixing Guo, Shasha Chen, Shuangming Chen, Hailong Chi, Zhen Weng, Yu-Xiang Li, Huaming Song, Li Wu, Minghong Yan, Qingyu Li, Shuzhou Liu, Zheng |
| author_sort | Di, Jun |
| collection | NTU |
| description | Photocatalytic CO₂ reduction has been regarded as an appealing pathway for CO₂ conversion to hydrocarbon fuels. To boost the CO₂ photoreduction performance, developing suitable cocatalyst on the photocatalysts is an efficient strategy. Herein, Co₂N is employed as novel noble-metal-free cocatalyst to promote the CO₂ photoreduction performance of BiOBr ultrathin nanosheets. The optimal Co₂N/BiOBr delivers a high selectivity CO formation rate of 67.8 µmol g−1 h−1 in pure water without sacrificial reagent or extra photosensitizer, roughly 6 times higher than BiOBr. Co2N can create strong electronic interactions with BiOBr, steering the electron transfer from BiOBr, across the interface to metallic Co₂N and finally to the surface. Apart from the charge separation steering, the activation energy barrier can be lowered on Co₂N surface via stabilize COOH* intermediates, tuning the rate-limiting step from the formation of COOH* on BiOBr to the formation of CO* on Co₂N, jointly optimize the CO₂ photoreduction activity. This strategy affords an accessible pathway for designing cocatalysts for efficient CO₂ photoreduction. |
| first_indexed | 2025-02-19T03:28:57Z |
| format | Journal Article |
| id | ntu-10356/154718 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:28:57Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1547182022-01-05T05:50:54Z Cobalt nitride as a novel cocatalyst to boost photocatalytic CO₂ reduction Di, Jun Chen, Chao Zhu, Chao Song, Pin Duan, Meilin Xiong, Jun Long, Ran Xu, Manzhang Kang, Lixing Guo, Shasha Chen, Shuangming Chen, Hailong Chi, Zhen Weng, Yu-Xiang Li, Huaming Song, Li Wu, Minghong Yan, Qingyu Li, Shuzhou Liu, Zheng School of Materials Science and Engineering Engineering::Materials Co₂N BiOBr Photocatalytic CO₂ reduction has been regarded as an appealing pathway for CO₂ conversion to hydrocarbon fuels. To boost the CO₂ photoreduction performance, developing suitable cocatalyst on the photocatalysts is an efficient strategy. Herein, Co₂N is employed as novel noble-metal-free cocatalyst to promote the CO₂ photoreduction performance of BiOBr ultrathin nanosheets. The optimal Co₂N/BiOBr delivers a high selectivity CO formation rate of 67.8 µmol g−1 h−1 in pure water without sacrificial reagent or extra photosensitizer, roughly 6 times higher than BiOBr. Co2N can create strong electronic interactions with BiOBr, steering the electron transfer from BiOBr, across the interface to metallic Co₂N and finally to the surface. Apart from the charge separation steering, the activation energy barrier can be lowered on Co₂N surface via stabilize COOH* intermediates, tuning the rate-limiting step from the formation of COOH* on BiOBr to the formation of CO* on Co₂N, jointly optimize the CO₂ photoreduction activity. This strategy affords an accessible pathway for designing cocatalysts for efficient CO₂ photoreduction. Ministry of Education (MOE) This work was financially supported by Singapore National Research Foundation under NRF RF Award No. MOE2016-T2-1-131, Tier 1 2017- T1-001-075, MOE2018-T3-1-002, Tier 1 (RG104/18), and Ministry of Education - Singapore AcRF Tier 2 under Grant Nos. 2017-T2-2-069 and 2018-T2-01-010. The computational work for this article was fully carried out on National Supercomputing Centre, Singapore (https://www.nscc.sg). 2022-01-05T05:50:54Z 2022-01-05T05:50:54Z 2021 Journal Article Di, J., Chen, C., Zhu, C., Song, P., Duan, M., Xiong, J., Long, R., Xu, M., Kang, L., Guo, S., Chen, S., Chen, H., Chi, Z., Weng, Y., Li, H., Song, L., Wu, M., Yan, Q., Li, S. & Liu, Z. (2021). Cobalt nitride as a novel cocatalyst to boost photocatalytic CO₂ reduction. Nano Energy, 79, 105429-. https://dx.doi.org/10.1016/j.nanoen.2020.105429 2211-2855 https://hdl.handle.net/10356/154718 10.1016/j.nanoen.2020.105429 2-s2.0-85092318282 79 105429 en MOE2016-T2-1-131 2017- T1-001-075 MOE2018-T3-1-002 RG104/18 2017-T2-2-069 2018-T2-01-010 Nano Energy © 2020 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Materials Co₂N BiOBr Di, Jun Chen, Chao Zhu, Chao Song, Pin Duan, Meilin Xiong, Jun Long, Ran Xu, Manzhang Kang, Lixing Guo, Shasha Chen, Shuangming Chen, Hailong Chi, Zhen Weng, Yu-Xiang Li, Huaming Song, Li Wu, Minghong Yan, Qingyu Li, Shuzhou Liu, Zheng Cobalt nitride as a novel cocatalyst to boost photocatalytic CO₂ reduction |
| title | Cobalt nitride as a novel cocatalyst to boost photocatalytic CO₂ reduction |
| title_full | Cobalt nitride as a novel cocatalyst to boost photocatalytic CO₂ reduction |
| title_fullStr | Cobalt nitride as a novel cocatalyst to boost photocatalytic CO₂ reduction |
| title_full_unstemmed | Cobalt nitride as a novel cocatalyst to boost photocatalytic CO₂ reduction |
| title_short | Cobalt nitride as a novel cocatalyst to boost photocatalytic CO₂ reduction |
| title_sort | cobalt nitride as a novel cocatalyst to boost photocatalytic co₂ reduction |
| topic | Engineering::Materials Co₂N BiOBr |
| url | https://hdl.handle.net/10356/154718 |
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