Highly ion-selective graphene-oxide-based membranes for nanofluidic osmotic energy conversion

doi:10.1016/j.carbon.2024.119046

IMR OpenIR

	Highly ion-selective graphene-oxide-based membranes for nanofluidic osmotic energy conversion
	Yu, Xin 1; Ren, Wencai 1,2
通讯作者	Ren, Wencai(wcren@imr.ac.cn)
	2024-04-25
发表期刊	CARBON
ISSN	0008-6223
卷号	224 页码:6
摘要	Graphene oxide (GO) membranes have shown great potential for water treatment and osmotic energy conversion. However, the inherent challenge with GO membranes lies in their instability in water. While reduction techniques can improve stability, they simultaneously compromise selective ion transport properties due to the loss of functional groups. Here, we report preassembly modified GO (GOTA) membranes by using tannic acid (TA) as modification reagent. It is found that the TA molecules not only act as reducing agent, enhancing the aqueous stability of the membrane by generating stacked graphitic sp2 domains but also serve as intercalating agent, improving the selective ion transport properties by creating localized areas with high charge density and enlarged interlayer spacing. The cation selective number of GOTA membranes is -0.94-0.89 for different salinity gradients, much better than the thermally reduced GO membranes. In energy conversion system, the output power density approaches -0.32 W m- 2 for the artificial seawater and river water with energy conversion efficiency of 41.7%. Meanwhile, the GOTA membranes exhibit excellent structural stability in various solution environments. This work demonstrates the importance of nanofluidic structure in improving the performance of ion -selective membranes and provides insights into the construction of advanced osmotic energy conversion system.
关键词	GO -based membrane Ion selectivity Ion transport Aqueous stability Nanofluidics Osmotic energy conversion
资助者	National Natural Science Foundation of China ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; LiaoNing Revitalization Talents Program
DOI	10.1016/j.carbon.2024.119046
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52188101] ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences[ZDBS-LY-JSC027] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB30000000] ; LiaoNing Revitalization Talents Program[XLYC2201003]
WOS研究方向	Chemistry ; Materials Science
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary
WOS记录号	WOS:001214948900001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/185760
专题	中国科学院金属研究所
通讯作者	Ren, Wencai
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Yu, Xin,Ren, Wencai. Highly ion-selective graphene-oxide-based membranes for nanofluidic osmotic energy conversion[J]. CARBON,2024,224:6.
APA	Yu, Xin,&Ren, Wencai.(2024).Highly ion-selective graphene-oxide-based membranes for nanofluidic osmotic energy conversion.CARBON,224,6.
MLA	Yu, Xin,et al."Highly ion-selective graphene-oxide-based membranes for nanofluidic osmotic energy conversion".CARBON 224(2024):6.