The role of overlayered nitride electro-materials for N2 reduction to ammonia
Following our previous report on N2 reduction reaction (NRR) on the surface of nitrides, we investigated the influence of incorporation of titanium nitride as a stable and inactive-NRR material into the structure of DFT-predicted NRR-active surfaces of chromium, vanadium, niobium, and zirconium nitr...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-02-01
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| Series: | Frontiers in Catalysis |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fctls.2022.1096824/full |
| _version_ | 1811173164942622720 |
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| author | Younes Abghoui Atef Iqbal Egill Skúlason Egill Skúlason |
| author_facet | Younes Abghoui Atef Iqbal Egill Skúlason Egill Skúlason |
| author_sort | Younes Abghoui |
| collection | DOAJ |
| description | Following our previous report on N2 reduction reaction (NRR) on the surface of nitrides, we investigated the influence of incorporation of titanium nitride as a stable and inactive-NRR material into the structure of DFT-predicted NRR-active surfaces of chromium, vanadium, niobium, and zirconium nitrides. The outcome of our density functional theory (DFT) based analyses suggests that combination of titanium nitride with vanadium nitride can enhance the potential-determining step of the reaction with up to 20% compared to pure vanadium nitride while maintaining similar number of proton-electron transfer steps for formation of two ammonia molecules. The influence of titanium nitride on chromium nitride is expected to be more pronounced as rate-determining step associated with nitrogen adsorption on the vacancy and regeneration of the catalyst improves by around 90% compared to the pure chromium nitride. This effect on niobium and zirconium nitride is, however, negative as the potential-determining step becomes larger for the case of niobium nitride, and the reaction pathway changes from nitrogen reduction to hydrogen evolution for the case of zirconium nitride. These results not only encourage experimentalists to explore these overlayered structures further in experiments, but it also opens up the avenue for considering the alloys and dopants of these nitrides via both density functional theory modelling and experiments. |
| first_indexed | 2024-04-10T17:42:14Z |
| format | Article |
| id | doaj.art-7fef6694a7904b7baebab4d6cd2480c6 |
| institution | Directory Open Access Journal |
| issn | 2673-7841 |
| language | English |
| last_indexed | 2024-04-10T17:42:14Z |
| publishDate | 2023-02-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Catalysis |
| spelling | doaj.art-7fef6694a7904b7baebab4d6cd2480c62023-02-03T10:21:10ZengFrontiers Media S.A.Frontiers in Catalysis2673-78412023-02-01210.3389/fctls.2022.10968241096824The role of overlayered nitride electro-materials for N2 reduction to ammoniaYounes Abghoui0Atef Iqbal1Egill Skúlason2Egill Skúlason3Science Institute, University of Iceland, Reykjavík, IcelandScience Institute, University of Iceland, Reykjavík, IcelandScience Institute, University of Iceland, Reykjavík, IcelandFaculty of Industrial Engineering, Mechanical Engineering and Computer Science, University of Iceland, Reykjavík, IcelandFollowing our previous report on N2 reduction reaction (NRR) on the surface of nitrides, we investigated the influence of incorporation of titanium nitride as a stable and inactive-NRR material into the structure of DFT-predicted NRR-active surfaces of chromium, vanadium, niobium, and zirconium nitrides. The outcome of our density functional theory (DFT) based analyses suggests that combination of titanium nitride with vanadium nitride can enhance the potential-determining step of the reaction with up to 20% compared to pure vanadium nitride while maintaining similar number of proton-electron transfer steps for formation of two ammonia molecules. The influence of titanium nitride on chromium nitride is expected to be more pronounced as rate-determining step associated with nitrogen adsorption on the vacancy and regeneration of the catalyst improves by around 90% compared to the pure chromium nitride. This effect on niobium and zirconium nitride is, however, negative as the potential-determining step becomes larger for the case of niobium nitride, and the reaction pathway changes from nitrogen reduction to hydrogen evolution for the case of zirconium nitride. These results not only encourage experimentalists to explore these overlayered structures further in experiments, but it also opens up the avenue for considering the alloys and dopants of these nitrides via both density functional theory modelling and experiments.https://www.frontiersin.org/articles/10.3389/fctls.2022.1096824/fullDFT calculationselectrochemical ammonia productiontransition metal nitride overlayersambient conditionsN2 reduction |
| spellingShingle | Younes Abghoui Atef Iqbal Egill Skúlason Egill Skúlason The role of overlayered nitride electro-materials for N2 reduction to ammonia Frontiers in Catalysis DFT calculations electrochemical ammonia production transition metal nitride overlayers ambient conditions N2 reduction |
| title | The role of overlayered nitride electro-materials for N2 reduction to ammonia |
| title_full | The role of overlayered nitride electro-materials for N2 reduction to ammonia |
| title_fullStr | The role of overlayered nitride electro-materials for N2 reduction to ammonia |
| title_full_unstemmed | The role of overlayered nitride electro-materials for N2 reduction to ammonia |
| title_short | The role of overlayered nitride electro-materials for N2 reduction to ammonia |
| title_sort | role of overlayered nitride electro materials for n2 reduction to ammonia |
| topic | DFT calculations electrochemical ammonia production transition metal nitride overlayers ambient conditions N2 reduction |
| url | https://www.frontiersin.org/articles/10.3389/fctls.2022.1096824/full |
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