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Dissociating stable nitrogen molecules under mild conditions by cyclic strain engineering

All quiet on the nitrogen front. The dissociation of stable diatomic nitrogen molecules (N(2)) is one of the most challenging tasks in the scientific community and currently requires both high pressure and high temperature. Here, we demonstrate that N(2) can be dissociated under mild conditions by c...

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Autores principales: Han, Gao-Feng, Shi, Xiang-Mei, Kim, Seok-Jin, Kim, Jeonghun, Jeon, Jong-Pil, Noh, Hyuk-Jun, Im, Yoon-Kwang, Li, Feng, Uhm, Young Rang, Kim, Chul Sung, Jiang, Qing, Baek, Jong-Beom
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Association for the Advancement of Science 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6824848/
https://www.ncbi.nlm.nih.gov/pubmed/31701007
http://dx.doi.org/10.1126/sciadv.aax8275
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author Han, Gao-Feng
Shi, Xiang-Mei
Kim, Seok-Jin
Kim, Jeonghun
Jeon, Jong-Pil
Noh, Hyuk-Jun
Im, Yoon-Kwang
Li, Feng
Uhm, Young Rang
Kim, Chul Sung
Jiang, Qing
Baek, Jong-Beom
author_facet Han, Gao-Feng
Shi, Xiang-Mei
Kim, Seok-Jin
Kim, Jeonghun
Jeon, Jong-Pil
Noh, Hyuk-Jun
Im, Yoon-Kwang
Li, Feng
Uhm, Young Rang
Kim, Chul Sung
Jiang, Qing
Baek, Jong-Beom
author_sort Han, Gao-Feng
collection PubMed
description All quiet on the nitrogen front. The dissociation of stable diatomic nitrogen molecules (N(2)) is one of the most challenging tasks in the scientific community and currently requires both high pressure and high temperature. Here, we demonstrate that N(2) can be dissociated under mild conditions by cyclic strain engineering. The method can be performed at a critical reaction pressure of less than 1 bar, and the temperature of the reaction container is only 40°C. When graphite was used as a dissociated N* receptor, the normalized loading of N to C reached as high as 16.3 at/at %. Such efficient nitrogen dissociation is induced by the cyclic loading and unloading mechanical strain, which has the effect of altering the binding energy of N, facilitating adsorption in the strain-free stage and desorption in the compressive strain stage. Our finding may lead to opportunities for the direct synthesis of N-containing compounds from N(2).
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spelling pubmed-68248482019-11-07 Dissociating stable nitrogen molecules under mild conditions by cyclic strain engineering Han, Gao-Feng Shi, Xiang-Mei Kim, Seok-Jin Kim, Jeonghun Jeon, Jong-Pil Noh, Hyuk-Jun Im, Yoon-Kwang Li, Feng Uhm, Young Rang Kim, Chul Sung Jiang, Qing Baek, Jong-Beom Sci Adv Research Articles All quiet on the nitrogen front. The dissociation of stable diatomic nitrogen molecules (N(2)) is one of the most challenging tasks in the scientific community and currently requires both high pressure and high temperature. Here, we demonstrate that N(2) can be dissociated under mild conditions by cyclic strain engineering. The method can be performed at a critical reaction pressure of less than 1 bar, and the temperature of the reaction container is only 40°C. When graphite was used as a dissociated N* receptor, the normalized loading of N to C reached as high as 16.3 at/at %. Such efficient nitrogen dissociation is induced by the cyclic loading and unloading mechanical strain, which has the effect of altering the binding energy of N, facilitating adsorption in the strain-free stage and desorption in the compressive strain stage. Our finding may lead to opportunities for the direct synthesis of N-containing compounds from N(2). American Association for the Advancement of Science 2019-11-01 /pmc/articles/PMC6824848/ /pubmed/31701007 http://dx.doi.org/10.1126/sciadv.aax8275 Text en Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (http://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.
spellingShingle Research Articles
Han, Gao-Feng
Shi, Xiang-Mei
Kim, Seok-Jin
Kim, Jeonghun
Jeon, Jong-Pil
Noh, Hyuk-Jun
Im, Yoon-Kwang
Li, Feng
Uhm, Young Rang
Kim, Chul Sung
Jiang, Qing
Baek, Jong-Beom
Dissociating stable nitrogen molecules under mild conditions by cyclic strain engineering
title Dissociating stable nitrogen molecules under mild conditions by cyclic strain engineering
title_full Dissociating stable nitrogen molecules under mild conditions by cyclic strain engineering
title_fullStr Dissociating stable nitrogen molecules under mild conditions by cyclic strain engineering
title_full_unstemmed Dissociating stable nitrogen molecules under mild conditions by cyclic strain engineering
title_short Dissociating stable nitrogen molecules under mild conditions by cyclic strain engineering
title_sort dissociating stable nitrogen molecules under mild conditions by cyclic strain engineering
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6824848/
https://www.ncbi.nlm.nih.gov/pubmed/31701007
http://dx.doi.org/10.1126/sciadv.aax8275
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