气候变化领域集成服务门户(CCPortal): Monolayer graphene membranes for molecular separation in high-temperature harsh organic solvents

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DOI	10.1073/pnas.2111360118
	Monolayer graphene membranes for molecular separation in high-temperature harsh organic solvents
	Lu Y.; Zhang L.; Shen L.; Liu W.; Karnik R.; Zhang S.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:37
英文摘要	The excellent thermal and chemical stability of monolayer graphene makes it an ideal material for separations at high temperatures and in harsh organic solvents. Here, based on understanding of solvent permeation through nanoporous graphene via molecular dynamics simulation, a resistance model was established to guide the design of a defect-tolerant graphene composite membrane consisting of monolayer graphene on a porous supporting substrate. Guided by the model, we experimentally engineered polyimide (PI) supporting substrates with appropriate pore size, permeance, and excellent solvent resistance and investigated transport across the resulting graphene-covered membranes. The cross-linked PI substrate could effectively mitigate the impacts of leakage through defects across graphene to allow selective transport without defect sealing. The graphene-covered membrane showed pure solvent permeance of 24.1 L m-2 h-1 bar-1 and stable rejection (∼90%) of Allura Red AC (496.42 g mol-1) in a harsh polar solvent, dimethylformamide (DMF), at 100°C for 10 d. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Harsh organic solvents; High temperature; Monolayer graphene; Organic solvent nanofiltration; Support design
语种	英语
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/238385
作者单位	Department of Chemical and Biomolecular Engineering, National University of Singapore117585, Singapore; Institute of High-Performance Computing. Agency for Science, Technology and Research138632, Singapore; School of Physics, Southeast University, Nanjing, 211189, China; Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States
推荐引用方式 GB/T 7714	Lu Y.,Zhang L.,Shen L.,et al. Monolayer graphene membranes for molecular separation in high-temperature harsh organic solvents[J],2021,118(37).
APA	Lu Y.,Zhang L.,Shen L.,Liu W.,Karnik R.,&Zhang S..(2021).Monolayer graphene membranes for molecular separation in high-temperature harsh organic solvents.Proceedings of the National Academy of Sciences of the United States of America,118(37).
MLA	Lu Y.,et al."Monolayer graphene membranes for molecular separation in high-temperature harsh organic solvents".Proceedings of the National Academy of Sciences of the United States of America 118.37(2021).