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Ammonium fluoride-activated synthesis of cubic δ-TaN nanoparticles at low temperatures
Cubic delta-tantalum nitride (δ-TaN) nanoparticles were selectively prepared using a K(2)TaF(7) + (5 + k) NaN(3) + kNH(4)F reactive mixture (k being the number of moles of NH(4)F) via a combustion process under a nitrogen pressure of 2.0 MPa. The combustion temperature, when plotted as a function of...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3605259/ https://www.ncbi.nlm.nih.gov/pubmed/23497396 http://dx.doi.org/10.1186/1556-276X-8-126 |
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author | Lee, Young-Jun Kim, Dae-Young Lee, Kap-Ho Han, Moon-Hee Kang, Kyoung-Soo Bae, Ki-Kwang Lee, Jong-Hyeon |
author_facet | Lee, Young-Jun Kim, Dae-Young Lee, Kap-Ho Han, Moon-Hee Kang, Kyoung-Soo Bae, Ki-Kwang Lee, Jong-Hyeon |
author_sort | Lee, Young-Jun |
collection | PubMed |
description | Cubic delta-tantalum nitride (δ-TaN) nanoparticles were selectively prepared using a K(2)TaF(7) + (5 + k) NaN(3) + kNH(4)F reactive mixture (k being the number of moles of NH(4)F) via a combustion process under a nitrogen pressure of 2.0 MPa. The combustion temperature, when plotted as a function of the number of moles of NH(4)F used, was in the range of 850°C to 1,170°C. X-ray diffraction patterns revealed the formation of cubic δ-TaN nanoparticles at 850°C to 950°C when NH(4)F is used in an amount of 2.0 mol (or greater) in the combustion experiment. Phase pure cubic δ-TaN synthesized at k = 4 exhibited a specific surface area of 30.59 m(2)/g and grain size of 5 to 10 nm, as estimated from the transmission electron microscopy micrograph. The role of NH(4)F in the formation process of δ-TaN is discussed with regard to a hypothetical reaction mechanism. |
format | Online Article Text |
id | pubmed-3605259 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Springer |
record_format | MEDLINE/PubMed |
spelling | pubmed-36052592013-03-25 Ammonium fluoride-activated synthesis of cubic δ-TaN nanoparticles at low temperatures Lee, Young-Jun Kim, Dae-Young Lee, Kap-Ho Han, Moon-Hee Kang, Kyoung-Soo Bae, Ki-Kwang Lee, Jong-Hyeon Nanoscale Res Lett Nano Express Cubic delta-tantalum nitride (δ-TaN) nanoparticles were selectively prepared using a K(2)TaF(7) + (5 + k) NaN(3) + kNH(4)F reactive mixture (k being the number of moles of NH(4)F) via a combustion process under a nitrogen pressure of 2.0 MPa. The combustion temperature, when plotted as a function of the number of moles of NH(4)F used, was in the range of 850°C to 1,170°C. X-ray diffraction patterns revealed the formation of cubic δ-TaN nanoparticles at 850°C to 950°C when NH(4)F is used in an amount of 2.0 mol (or greater) in the combustion experiment. Phase pure cubic δ-TaN synthesized at k = 4 exhibited a specific surface area of 30.59 m(2)/g and grain size of 5 to 10 nm, as estimated from the transmission electron microscopy micrograph. The role of NH(4)F in the formation process of δ-TaN is discussed with regard to a hypothetical reaction mechanism. Springer 2013-03-15 /pmc/articles/PMC3605259/ /pubmed/23497396 http://dx.doi.org/10.1186/1556-276X-8-126 Text en Copyright ©2013 Lee et al.; licensee Springer. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Nano Express Lee, Young-Jun Kim, Dae-Young Lee, Kap-Ho Han, Moon-Hee Kang, Kyoung-Soo Bae, Ki-Kwang Lee, Jong-Hyeon Ammonium fluoride-activated synthesis of cubic δ-TaN nanoparticles at low temperatures |
title | Ammonium fluoride-activated synthesis of cubic δ-TaN nanoparticles at low temperatures |
title_full | Ammonium fluoride-activated synthesis of cubic δ-TaN nanoparticles at low temperatures |
title_fullStr | Ammonium fluoride-activated synthesis of cubic δ-TaN nanoparticles at low temperatures |
title_full_unstemmed | Ammonium fluoride-activated synthesis of cubic δ-TaN nanoparticles at low temperatures |
title_short | Ammonium fluoride-activated synthesis of cubic δ-TaN nanoparticles at low temperatures |
title_sort | ammonium fluoride-activated synthesis of cubic δ-tan nanoparticles at low temperatures |
topic | Nano Express |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3605259/ https://www.ncbi.nlm.nih.gov/pubmed/23497396 http://dx.doi.org/10.1186/1556-276X-8-126 |
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