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Termination-Property Coupling via Reversible Oxygen Functionalization of MXenes
[Image: see text] MXenes are a growing family of 2D transition-metal carbides and nitrides, which display excellent performance in myriad of applications. Theoretical calculations suggest that manipulation of the MXene surface termination (such as =O or −F) could strongly alter their functional prop...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2022
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9585631/ https://www.ncbi.nlm.nih.gov/pubmed/36281254 http://dx.doi.org/10.1021/acsnanoscienceau.2c00024 |
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author | Hart, James L. Hantanasirisakul, Kanit Gogotsi, Yury Taheri, Mitra L. |
author_facet | Hart, James L. Hantanasirisakul, Kanit Gogotsi, Yury Taheri, Mitra L. |
author_sort | Hart, James L. |
collection | PubMed |
description | [Image: see text] MXenes are a growing family of 2D transition-metal carbides and nitrides, which display excellent performance in myriad of applications. Theoretical calculations suggest that manipulation of the MXene surface termination (such as =O or −F) could strongly alter their functional properties; however, experimental control of the MXene surface termination is still in the developmental stage. Here, we demonstrate that annealing MXenes in an Ar + O(2) low-power plasma results in increased =O functionalization with minimal formation of secondary phases. We apply this method to two MXenes, Ti(2)CT(x) and Mo(2)TiC(2)T(x) (T(x) represents the mixed surface termination), and show that in both cases, the increased =O content increases the electrical resistance and decreases the surface transition-metal’s electron count. For Mo(2)TiC(2)O(x), we show that the O content can be reversibly altered through successive vacuum and plasma annealing. This work provides an effective way to tune MXene surface functionalization, which may unlock exciting surface-dependent properties. |
format | Online Article Text |
id | pubmed-9585631 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-95856312022-10-22 Termination-Property Coupling via Reversible Oxygen Functionalization of MXenes Hart, James L. Hantanasirisakul, Kanit Gogotsi, Yury Taheri, Mitra L. ACS Nanosci Au [Image: see text] MXenes are a growing family of 2D transition-metal carbides and nitrides, which display excellent performance in myriad of applications. Theoretical calculations suggest that manipulation of the MXene surface termination (such as =O or −F) could strongly alter their functional properties; however, experimental control of the MXene surface termination is still in the developmental stage. Here, we demonstrate that annealing MXenes in an Ar + O(2) low-power plasma results in increased =O functionalization with minimal formation of secondary phases. We apply this method to two MXenes, Ti(2)CT(x) and Mo(2)TiC(2)T(x) (T(x) represents the mixed surface termination), and show that in both cases, the increased =O content increases the electrical resistance and decreases the surface transition-metal’s electron count. For Mo(2)TiC(2)O(x), we show that the O content can be reversibly altered through successive vacuum and plasma annealing. This work provides an effective way to tune MXene surface functionalization, which may unlock exciting surface-dependent properties. American Chemical Society 2022-06-28 /pmc/articles/PMC9585631/ /pubmed/36281254 http://dx.doi.org/10.1021/acsnanoscienceau.2c00024 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Hart, James L. Hantanasirisakul, Kanit Gogotsi, Yury Taheri, Mitra L. Termination-Property Coupling via Reversible Oxygen Functionalization of MXenes |
title | Termination-Property Coupling via Reversible Oxygen
Functionalization of MXenes |
title_full | Termination-Property Coupling via Reversible Oxygen
Functionalization of MXenes |
title_fullStr | Termination-Property Coupling via Reversible Oxygen
Functionalization of MXenes |
title_full_unstemmed | Termination-Property Coupling via Reversible Oxygen
Functionalization of MXenes |
title_short | Termination-Property Coupling via Reversible Oxygen
Functionalization of MXenes |
title_sort | termination-property coupling via reversible oxygen
functionalization of mxenes |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9585631/ https://www.ncbi.nlm.nih.gov/pubmed/36281254 http://dx.doi.org/10.1021/acsnanoscienceau.2c00024 |
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