干旱区生态环境知识资源中心(Arid): Application of Thermal Response Measurements to Investigate Enhanced Water Adsorption Kinetics in Ball-Milled C2N-Type Materials

Arid

DOI	10.1002/open.202200193
	Application of Thermal Response Measurements to Investigate Enhanced Water Adsorption Kinetics in Ball-Milled C2N-Type Materials
	Du, Shengjun; Leistenschneider, Desiree; Xiao, Jing; Dellith, Jan; Troschke, Erik; Oschatz, Martin
通讯作者	Oschatz, M
来源期刊	CHEMISTRYOPEN
ISSN	2191-1363
出版年	2022
卷号	11 期号:12
英文摘要	Sorption-based water capture is an attractive solution to provide potable water in arid regions. Heteroatom-decorated microporous carbons with hydrophilic character are promising candidates for water adsorption at low humidity, but the strong affinity between the polar carbon pore walls and water molecules can hinder the water transport within the narrow pore system. To reduce the limitations of mass transfer, C2N-type carbon materials obtained from the thermal condensation of a molecular hexaazatriphenylene-hexacarbonitrile (HAT-CN) precursor were treated mechanochemically via ball milling. Scanning electron microscopy as well as static light scattering reveal that large pristine C2N-type particles were split up to a smaller size after ball milling, thus increasing the pore accessibility which consequently leads to faster occupation of the water vapor adsorption sites. The major aim of this work is to demonstrate the applicability of thermal response measurements to track these enhanced kinetics of water adsorption. The adsorption rate constant of a C2N material condensed at 700 degrees C remarkably increased from 0.026 s(-1) to 0.036 s(-1) upon ball milling, while maintaining remarkably high water vapor capacity. This work confirms the advantages of small particle sizes in ultramicroporous materials on their vapor adsorption kinetics. It is demonstrated that thermal response measurements are a valuable and time-saving method to investigate water adsorption kinetics, capacities, and cycling stability.
英文关键词	ball milling C2N-type materials diffusion particle size water adsorption
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000897860100001
WOS关键词	METAL-ORGANIC FRAMEWORKS ; CARBON MATERIALS ; NITROGEN ; DESIGN ; AIR
WOS类目	Chemistry, Multidisciplinary
WOS研究方向	Chemistry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392133
推荐引用方式 GB/T 7714	Du, Shengjun,Leistenschneider, Desiree,Xiao, Jing,et al. Application of Thermal Response Measurements to Investigate Enhanced Water Adsorption Kinetics in Ball-Milled C2N-Type Materials[J],2022,11(12).
APA	Du, Shengjun,Leistenschneider, Desiree,Xiao, Jing,Dellith, Jan,Troschke, Erik,&Oschatz, Martin.(2022).Application of Thermal Response Measurements to Investigate Enhanced Water Adsorption Kinetics in Ball-Milled C2N-Type Materials.CHEMISTRYOPEN,11(12).
MLA	Du, Shengjun,et al."Application of Thermal Response Measurements to Investigate Enhanced Water Adsorption Kinetics in Ball-Milled C2N-Type Materials".CHEMISTRYOPEN 11.12(2022).