Quaternary functionalized mesoporous adsorbents for ultra-high kinetics of CO2 capture from air

Abstract Obstacles to widespread deployments of direct air capture of CO2 (DAC) lie in high material and energy costs. By grafting quaternary ammonium (QA) functional group to mesoporous polymers with high surface area, a unique DAC adsorbent with moisture swing adsorption (MSA) ability and ultra-hi...

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Autores principales:	Tao Wang, Xinru Wang, Chenglong Hou, Jun Liu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/7efc8caa0d58472a926e003455e89ec5
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spelling	oai:doaj.org-article:7efc8caa0d58472a926e003455e89ec52021-12-02T15:11:51ZQuaternary functionalized mesoporous adsorbents for ultra-high kinetics of CO2 capture from air10.1038/s41598-020-77477-12045-2322https://doaj.org/article/7efc8caa0d58472a926e003455e89ec52020-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-77477-1https://doaj.org/toc/2045-2322Abstract Obstacles to widespread deployments of direct air capture of CO2 (DAC) lie in high material and energy costs. By grafting quaternary ammonium (QA) functional group to mesoporous polymers with high surface area, a unique DAC adsorbent with moisture swing adsorption (MSA) ability and ultra-high kinetics was developed in this work. Functionalization is designed for efficient delivery of QA group through mesopores to active substitution sites. This achieved ultra-high kinetics adsorbent with half time of 2.9 min under atmospheric environment, is the highest kinetics value reported among DAC adsorbents. A cyclic adsorption capacity of 0.26 mmol g−1 is obtained during MSA process. Through adsorption thermodynamics, it is revealed that adsorbent with uniform cylindrical pore structure has higher functional group efficiency and CO2 capacity. Pore structure can also tune the MSA ability of adsorbent through capillary condensation of water inside its mesopores. The successful functionalization of mesoporous polymers with superb CO2 adsorption kinetics opens the door to facilitate DAC adsorbents for large-scale carbon capture deployments.Tao WangXinru WangChenglong HouJun LiuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-8 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Tao Wang Xinru Wang Chenglong Hou Jun Liu Quaternary functionalized mesoporous adsorbents for ultra-high kinetics of CO2 capture from air
description	Abstract Obstacles to widespread deployments of direct air capture of CO2 (DAC) lie in high material and energy costs. By grafting quaternary ammonium (QA) functional group to mesoporous polymers with high surface area, a unique DAC adsorbent with moisture swing adsorption (MSA) ability and ultra-high kinetics was developed in this work. Functionalization is designed for efficient delivery of QA group through mesopores to active substitution sites. This achieved ultra-high kinetics adsorbent with half time of 2.9 min under atmospheric environment, is the highest kinetics value reported among DAC adsorbents. A cyclic adsorption capacity of 0.26 mmol g−1 is obtained during MSA process. Through adsorption thermodynamics, it is revealed that adsorbent with uniform cylindrical pore structure has higher functional group efficiency and CO2 capacity. Pore structure can also tune the MSA ability of adsorbent through capillary condensation of water inside its mesopores. The successful functionalization of mesoporous polymers with superb CO2 adsorption kinetics opens the door to facilitate DAC adsorbents for large-scale carbon capture deployments.
format	article
author	Tao Wang Xinru Wang Chenglong Hou Jun Liu
author_facet	Tao Wang Xinru Wang Chenglong Hou Jun Liu
author_sort	Tao Wang
title	Quaternary functionalized mesoporous adsorbents for ultra-high kinetics of CO2 capture from air
title_short	Quaternary functionalized mesoporous adsorbents for ultra-high kinetics of CO2 capture from air
title_full	Quaternary functionalized mesoporous adsorbents for ultra-high kinetics of CO2 capture from air
title_fullStr	Quaternary functionalized mesoporous adsorbents for ultra-high kinetics of CO2 capture from air
title_full_unstemmed	Quaternary functionalized mesoporous adsorbents for ultra-high kinetics of CO2 capture from air
title_sort	quaternary functionalized mesoporous adsorbents for ultra-high kinetics of co2 capture from air
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/7efc8caa0d58472a926e003455e89ec5
work_keys_str_mv	AT taowang quaternaryfunctionalizedmesoporousadsorbentsforultrahighkineticsofco2capturefromair AT xinruwang quaternaryfunctionalizedmesoporousadsorbentsforultrahighkineticsofco2capturefromair AT chenglonghou quaternaryfunctionalizedmesoporousadsorbentsforultrahighkineticsofco2capturefromair AT junliu quaternaryfunctionalizedmesoporousadsorbentsforultrahighkineticsofco2capturefromair
_version_	1718387640662753280

Quaternary functionalized mesoporous adsorbents for ultra-high kinetics of CO2 capture from air

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