Ni nanoparticles/V₄C₃Tₓ MXene heterostructures for electrocatalytic nitrogen fixation
Electrocatalytic nitrogen reduction reaction (NRR) to generate ammonium is a promising renewable technology for nitrogen cycling. Engineering the composition and surface states of an electrocatalyst is critical to improve the intrinsic NRR performance. Here, a facile preparation of Ni nanoparticles...
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sg-ntu-dr.10356-1600022022-07-07T06:42:24Z Ni nanoparticles/V₄C₃Tₓ MXene heterostructures for electrocatalytic nitrogen fixation Du, Cheng-Feng Yang, Lan Tang, Kewei Fang, Wei Zhao, Xiangyuan Liang, Qinghua Liu, Xianhu Yu, Hong Qi, Weihong Yan, Qingyu School of Materials Science and Engineering Engineering::Materials Total-Energy Calculations Evolution Electrocatalytic nitrogen reduction reaction (NRR) to generate ammonium is a promising renewable technology for nitrogen cycling. Engineering the composition and surface states of an electrocatalyst is critical to improve the intrinsic NRR performance. Here, a facile preparation of Ni nanoparticles (NPs) loaded on V4C3Tx MXene (denoted as Ni@MX) as a highly efficient NRR electrocatalyst is reported. Remarkably, the Ni@MX nanocomposite presents an ammonia yield rate of 21.29 mu g h(-1) mg(cat)(-1) at 0.2 mA cm(-2). The presented NRR activity is considerably higher than that of the recently reported MXene derivatives and is even comparable to that of the noble-metal-based electrocatalysts. Combined with various characterization methods and the density functional theory (DFT) simulation, we propose that the improved NRR activity was ascribed to a synergistic NRR route by Ni sites in the nanoparticles and the surface O vacancy of V4C3Tx MXene. Given the remarkable improvement of NRR activity on the MXene-based nanocomposites, this work demonstrates the critical role of MXene and its derivatives with surface modification as electrocatalysts. Ministry of Education (MOE) This work was supported by the National Natural Science Foundation of China (No. 51901189 and 51803190) and the Opening Project of Key Laboratory of Materials Processing and Mold (No. NERC201903), Singapore MOE Tier 2 MOE2018-T2-1-010. Q. H. Liang acknowledges the financial support from the Australian Research Council (DE190100445). 2022-07-07T06:42:24Z 2022-07-07T06:42:24Z 2021 Journal Article Du, C., Yang, L., Tang, K., Fang, W., Zhao, X., Liang, Q., Liu, X., Yu, H., Qi, W. & Yan, Q. (2021). Ni nanoparticles/V₄C₃Tₓ MXene heterostructures for electrocatalytic nitrogen fixation. Materials Chemistry Frontiers, 5(5), 2338-2346. https://dx.doi.org/10.1039/D0QM00898B 2052-1537 https://hdl.handle.net/10356/160002 10.1039/D0QM00898B 5 5 2338 2346 en MOE 2018-T2-1-010 Materials Chemistry Frontiers © 2021 The Royal Society of Chemistry and the Chinese Chemical Society. All rights reserved. |
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Engineering::Materials Total-Energy Calculations Evolution Du, Cheng-Feng Yang, Lan Tang, Kewei Fang, Wei Zhao, Xiangyuan Liang, Qinghua Liu, Xianhu Yu, Hong Qi, Weihong Yan, Qingyu Ni nanoparticles/V₄C₃Tₓ MXene heterostructures for electrocatalytic nitrogen fixation |
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Electrocatalytic nitrogen reduction reaction (NRR) to generate ammonium is a promising renewable technology for nitrogen cycling. Engineering the composition and surface states of an electrocatalyst is critical to improve the intrinsic NRR performance. Here, a facile preparation of Ni nanoparticles (NPs) loaded on V4C3Tx MXene (denoted as Ni@MX) as a highly efficient NRR electrocatalyst is reported. Remarkably, the Ni@MX nanocomposite presents an ammonia yield rate of 21.29 mu g h(-1) mg(cat)(-1) at 0.2 mA cm(-2). The presented NRR activity is considerably higher than that of the recently reported MXene derivatives and is even comparable to that of the noble-metal-based electrocatalysts. Combined with various characterization methods and the density functional theory (DFT) simulation, we propose that the improved NRR activity was ascribed to a synergistic NRR route by Ni sites in the nanoparticles and the surface O vacancy of V4C3Tx MXene. Given the remarkable improvement of NRR activity on the MXene-based nanocomposites, this work demonstrates the critical role of MXene and its derivatives with surface modification as electrocatalysts. |
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School of Materials Science and Engineering |
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School of Materials Science and Engineering Du, Cheng-Feng Yang, Lan Tang, Kewei Fang, Wei Zhao, Xiangyuan Liang, Qinghua Liu, Xianhu Yu, Hong Qi, Weihong Yan, Qingyu |
format |
Article |
author |
Du, Cheng-Feng Yang, Lan Tang, Kewei Fang, Wei Zhao, Xiangyuan Liang, Qinghua Liu, Xianhu Yu, Hong Qi, Weihong Yan, Qingyu |
author_sort |
Du, Cheng-Feng |
title |
Ni nanoparticles/V₄C₃Tₓ MXene heterostructures for electrocatalytic nitrogen fixation |
title_short |
Ni nanoparticles/V₄C₃Tₓ MXene heterostructures for electrocatalytic nitrogen fixation |
title_full |
Ni nanoparticles/V₄C₃Tₓ MXene heterostructures for electrocatalytic nitrogen fixation |
title_fullStr |
Ni nanoparticles/V₄C₃Tₓ MXene heterostructures for electrocatalytic nitrogen fixation |
title_full_unstemmed |
Ni nanoparticles/V₄C₃Tₓ MXene heterostructures for electrocatalytic nitrogen fixation |
title_sort |
ni nanoparticles/v₄c₃tₓ mxene heterostructures for electrocatalytic nitrogen fixation |
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2022 |
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https://hdl.handle.net/10356/160002 |
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1738844888297897984 |