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Title: Ni nanoparticles/V₄C₃Tₓ MXene heterostructures for electrocatalytic nitrogen fixation
Authors: Du, Cheng-Feng
Yang, Lan
Tang, Kewei
Fang, Wei
Zhao, Xiangyuan
Liang, Qinghua
Liu, Xianhu
Yu, Hong
Qi, Weihong
Yan, Qingyu
Keywords: Engineering::Materials
Issue Date: 2021
Source: 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.
Project: MOE 2018-T2-1-010 
Journal: Materials Chemistry Frontiers
Abstract: 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.
ISSN: 2052-1537
DOI: 10.1039/D0QM00898B
Schools: School of Materials Science and Engineering 
Rights: © 2021 The Royal Society of Chemistry and the Chinese Chemical Society. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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