"Mix-Then-On-Demand-Complex": In Situ Cascade Anionization and Complexation of Graphene Oxide for High-Performance Nanofiltration Membranes | |
Li, Xiaoting1,2; Wang, Yanlei3; Chang, Jian1; Sun, Hao2; He, Hongyan3; Qian, Cheng3; Kheirabad, Atefeh Khorsand1; An, Quan-Fu2; Wang, Naixin2; Zhang, Miao1 | |
刊名 | ACS NANO |
2021-03-23 | |
卷号 | 15期号:3页码:4440-4449 |
关键词 | Graphene Oxide Ionic Complexation Nanofiltration Poly(Ionic Liquid) Confinement Effect |
ISSN号 | 1936-0851 |
DOI | 10.1021/acsnano.0c08308 |
英文摘要 | Assembling two-dimensional (2D) materials by polyelectrolyte often suffers from inhomogeneous microstructures due to the conventional mixing-and-simultaneous-complexation procedure ("mix-and-complex") in aqueous solution. Herein a "mix-then-on-demand-complex" concept via on-demand in situ cascade anionization and ionic complexation of 2D materials is raised that drastically improves structural order in 2D assemblies, as exemplified by classical graphene oxide (GO)-based ultrathin membranes. Specifically, in dimethyl sulfoxide, the carboxylic acid-functionalized GO sheets (COOH-GOs) were mixed evenly with a cationic poly(ionic liquid) (PIL) and upon filtration formed a well-ordered layered composite membrane with homogeneous distribution of PIL chains in it; next, whenever needed, it was alkali-treated to convert COOH-GO in situ into its anionized state COO--GO that immediately complexed ionically with the surrounding cationic PIL chains. This "mix-then-on-demand-complex" concept separates the ionic complexation of GO and polyelectrolytes from their mixing step. By synergistically combining the PIL-induced hydrophobic confinement effect and supramolecular interactions, the as-fabricated nanofiltration membranes carry interface transport nanochannels between GO and PIL, reaching a high water permeability of 96.38 L m(-2) h(-1) bar(-1) at a maintained excellent dye rejection 99.79% for 150 h, exceeding the state-of-the-art GO-based hybrid membranes. The molecular dynamics simulations support the experimental data, confirming the interface spacing between GO and PIL as the water transport channels. |
资助项目 | European Research Council (ERC)[NAPOLI-639720] ; Swedish Research Council[2018-05351] ; Verband der Chemischen Industrie e.V. (VCI) in Germany[Dozentenpreis 15126] ; Wallenberg Academy Fellow program in Sweden[KAW 2017.0166] ; Stockholm University Strategic Fund[SU FV-2.1.1-005] ; National Natural Science Foundation of China[21776003] |
WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science |
语种 | 英语 |
出版者 | AMER CHEMICAL SOC |
WOS记录号 | WOS:000634569100062 |
资助机构 | European Research Council (ERC) ; Swedish Research Council ; Verband der Chemischen Industrie e.V. (VCI) in Germany ; Wallenberg Academy Fellow program in Sweden ; Stockholm University Strategic Fund ; National Natural Science Foundation of China |
内容类型 | 期刊论文 |
源URL | [http://ir.ipe.ac.cn/handle/122111/48346] |
专题 | 中国科学院过程工程研究所 |
通讯作者 | Wang, Naixin; Zhang, Miao; Yuan, Jiayin |
作者单位 | 1.Stockholm Univ, Dept Mat & Environm Chem, S-10691 Stockholm, Sweden 2.Beijing Univ Technol, Beijing Key Lab Green Catalysis & Separat, Coll Environm & Energy Engn, Beijing 100124, Peoples R China 3.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing Key Lab Ion Liquids Clean Proc, Beijing 100190, Peoples R China |
推荐引用方式 GB/T 7714 | Li, Xiaoting,Wang, Yanlei,Chang, Jian,et al. "Mix-Then-On-Demand-Complex": In Situ Cascade Anionization and Complexation of Graphene Oxide for High-Performance Nanofiltration Membranes[J]. ACS NANO,2021,15(3):4440-4449. |
APA | Li, Xiaoting.,Wang, Yanlei.,Chang, Jian.,Sun, Hao.,He, Hongyan.,...&Yuan, Jiayin.(2021)."Mix-Then-On-Demand-Complex": In Situ Cascade Anionization and Complexation of Graphene Oxide for High-Performance Nanofiltration Membranes.ACS NANO,15(3),4440-4449. |
MLA | Li, Xiaoting,et al.""Mix-Then-On-Demand-Complex": In Situ Cascade Anionization and Complexation of Graphene Oxide for High-Performance Nanofiltration Membranes".ACS NANO 15.3(2021):4440-4449. |
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