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Conductive Graphitic Carbon Nitride as an Ideal Material for Electrocatalytically Switchable CO(2) Capture
Good electrical conductivity and high electron mobility of the sorbent materials are prerequisite for electrocatalytically switchable CO(2) capture. However, no conductive and easily synthetic sorbent materials are available until now. Here, we examined the possibility of conductive graphitic carbon...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4664948/ https://www.ncbi.nlm.nih.gov/pubmed/26621618 http://dx.doi.org/10.1038/srep17636 |
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author | Tan, Xin Kou, Liangzhi Tahini, Hassan A. Smith, Sean C. |
author_facet | Tan, Xin Kou, Liangzhi Tahini, Hassan A. Smith, Sean C. |
author_sort | Tan, Xin |
collection | PubMed |
description | Good electrical conductivity and high electron mobility of the sorbent materials are prerequisite for electrocatalytically switchable CO(2) capture. However, no conductive and easily synthetic sorbent materials are available until now. Here, we examined the possibility of conductive graphitic carbon nitride (g-C(4)N(3)) nanosheets as sorbent materials for electrocatalytically switchable CO(2) capture. Using first-principle calculations, we found that the adsorption energy of CO(2) molecules on g-C(4)N(3) nanosheets can be dramatically enhanced by injecting extra electrons into the adsorbent. At saturation CO(2) capture coverage, the negatively charged g-C(4)N(3) nanosheets achieve CO(2) capture capacities up to 73.9 × 10(13) cm(−2) or 42.3 wt%. In contrast to other CO(2) capture approaches, the process of CO(2) capture/release occurs spontaneously without any energy barriers once extra electrons are introduced or removed, and these processes can be simply controlled and reversed by switching on/off the charging voltage. In addition, these negatively charged g-C(4)N(3) nanosheets are highly selective for separating CO(2) from mixtures with CH(4), H(2) and/or N(2). These predictions may prove to be instrumental in searching for a new class of experimentally feasible high-capacity CO(2) capture materials with ideal thermodynamics and reversibility. |
format | Online Article Text |
id | pubmed-4664948 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-46649482015-12-03 Conductive Graphitic Carbon Nitride as an Ideal Material for Electrocatalytically Switchable CO(2) Capture Tan, Xin Kou, Liangzhi Tahini, Hassan A. Smith, Sean C. Sci Rep Article Good electrical conductivity and high electron mobility of the sorbent materials are prerequisite for electrocatalytically switchable CO(2) capture. However, no conductive and easily synthetic sorbent materials are available until now. Here, we examined the possibility of conductive graphitic carbon nitride (g-C(4)N(3)) nanosheets as sorbent materials for electrocatalytically switchable CO(2) capture. Using first-principle calculations, we found that the adsorption energy of CO(2) molecules on g-C(4)N(3) nanosheets can be dramatically enhanced by injecting extra electrons into the adsorbent. At saturation CO(2) capture coverage, the negatively charged g-C(4)N(3) nanosheets achieve CO(2) capture capacities up to 73.9 × 10(13) cm(−2) or 42.3 wt%. In contrast to other CO(2) capture approaches, the process of CO(2) capture/release occurs spontaneously without any energy barriers once extra electrons are introduced or removed, and these processes can be simply controlled and reversed by switching on/off the charging voltage. In addition, these negatively charged g-C(4)N(3) nanosheets are highly selective for separating CO(2) from mixtures with CH(4), H(2) and/or N(2). These predictions may prove to be instrumental in searching for a new class of experimentally feasible high-capacity CO(2) capture materials with ideal thermodynamics and reversibility. Nature Publishing Group 2015-12-01 /pmc/articles/PMC4664948/ /pubmed/26621618 http://dx.doi.org/10.1038/srep17636 Text en Copyright © 2015, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Tan, Xin Kou, Liangzhi Tahini, Hassan A. Smith, Sean C. Conductive Graphitic Carbon Nitride as an Ideal Material for Electrocatalytically Switchable CO(2) Capture |
title | Conductive Graphitic Carbon Nitride as an Ideal Material for Electrocatalytically Switchable CO(2) Capture |
title_full | Conductive Graphitic Carbon Nitride as an Ideal Material for Electrocatalytically Switchable CO(2) Capture |
title_fullStr | Conductive Graphitic Carbon Nitride as an Ideal Material for Electrocatalytically Switchable CO(2) Capture |
title_full_unstemmed | Conductive Graphitic Carbon Nitride as an Ideal Material for Electrocatalytically Switchable CO(2) Capture |
title_short | Conductive Graphitic Carbon Nitride as an Ideal Material for Electrocatalytically Switchable CO(2) Capture |
title_sort | conductive graphitic carbon nitride as an ideal material for electrocatalytically switchable co(2) capture |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4664948/ https://www.ncbi.nlm.nih.gov/pubmed/26621618 http://dx.doi.org/10.1038/srep17636 |
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