Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/91003
Title: | Exposed facet-controlled N₂ electroreduction on distinct Pt₃Fe nanostructures of nanocubes, nanorods and nanowires | Authors: | Tong, W Huang, B Wang, P Shao, Q Huang, X |
Issue Date: | Jan-2021 | Source: | National science review, Jan. 2021 , v. 8, no. 1, nwaa088 | Abstract: | Understanding the correlation between exposed surfaces and performances of controlled nanocatalysts can aid effective strategies to enhance electrocatalysis, but this is as yet unexplored for the nitrogen reduction reaction (NRR). Here, we first report controlled synthesis of well-defined Pt3Fe nanocrystals with tunable morphologies (nanocube, nanorod and nanowire) as ideal model electrocatalysts for investigating the NRR on different exposed facets. The detailed electrocatalytic studies reveal that the Pt3Fe nanocrystals exhibit shape-dependent NRR electrocatalysis. The optimized Pt3Fe nanowires bounded with high-index facets exhibit excellent selectivity (no N2H4 is detected), high activity with NH3 yield of 18.3 μg h-1 mg-1cat (0.52 μg h-1 cm-2ECSA; ECSA: electrochemical active surface area) and Faraday efficiency of 7.3% at -0.05 V versus reversible hydrogen electrode, outperforming the {200} facet-enclosed Pt3Fe nanocubes and {111} facet-enclosed Pt3Fe nanorods. They also show good stability with negligible activity change after five cycles. Density functional theory calculations reveal that, with high-indexed facet engineering, the Fe-3d band is an efficient d-d coupling correlation center for boosting the Pt 5d-electronic exchange and transfer activities towards the NRR. | Keywords: | Facet-controlled High-index N2reduction Nanowire Pt3Fe |
Publisher: | Oxford University Press | Journal: | National science review | ISSN: | 2095-5138 | EISSN: | 2053-714X | DOI: | 10.1093/nsr/nwaa088 | Rights: | © TheAuthor(s) 2020. Published byOxfordUniversity Press on behalf ofChina Science Publishing&Media Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. The following publication Tong, W., Huang, B., Wang, P., Shao, Q., & Huang, X. (2021). Exposed facet-controlled N2 electroreduction on distinct Pt3Fe nanostructures of nanocubes, nanorods and nanowires. National Science Review, 8(1), nwaa088 is available at https://doi.org/10.1093/nsr/nwaa088 |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Tong_exposed_facet_controlled.pdf | 1.88 MB | Adobe PDF | View/Open |
Page views
90
Last Week
0
0
Last month
Citations as of Apr 14, 2024
Downloads
33
Citations as of Apr 14, 2024
SCOPUSTM
Citations
32
Citations as of Apr 12, 2024
WEB OF SCIENCETM
Citations
38
Citations as of Apr 11, 2024
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.