Roles of Anion–Cation Coupling Transport and Dehydration-Induced Ion–Membrane Interaction in Precise Separation of Ions by Nanofiltration Membranes DOI
Xiaohu Zhai, Yong‐Lei Wang, Ruobin Dai

и другие.

Environmental Science & Technology, Год журнала: 2022, Номер 56(19), С. 14069 - 14079

Опубликована: Сен. 20, 2022

Nanofiltration (NF) membranes are playing increasingly crucial roles in addressing emerging environmental challenges by precise separation, yet understanding of the selective transport mechanism is still limited. In this work, underlying mechanisms governing selectivity polyamide NF membrane were elucidated using a series monovalent cations with minor hydrated radius difference. The observed single cation was neither correlated nor hydration energy, which could not be explained widely accepted model or ion dehydration theory. Herein, we employed an Arrhenius approach combined Monte Carlo simulation to unravel that transmembrane process would dominated its pairing anion, if anion has greater energy barrier, due constraint anion-cation coupling transport. Molecular dynamics simulations further revealed distinct structure primary origin barrier difference cations. having larger incompressible after partial through subnanopores induce more significant ion-membrane interaction and consequently higher barrier. Moreover, validate our proposed mechanisms, grafting modification toward enlarging dominant ions achieved 3-fold enhancement separation efficiency. Our work provides insights into ionic species membranes.

Язык: Английский

Nanofiltration Membranes with Crumpled Polyamide Films: A Critical Review on Mechanisms, Performances, and Environmental Applications DOI
Senlin Shao,

Fanxi Zeng,

Li Long

и другие.

Environmental Science & Technology, Год журнала: 2022, Номер 56(18), С. 12811 - 12827

Опубликована: Сен. 1, 2022

Nanofiltration (NF) membranes have been widely applied in many important environmental applications, including water softening, surface/groundwater purification, wastewater treatment, and reuse. In recent years, a new class of piperazine (PIP)-based NF featuring crumpled polyamide layer has received considerable attention because their great potential for achieving dramatic improvements membrane separation performance. Since the report novel Turing structures that exhibited an order magnitude enhancement permeance ( Science 2018, 360 (6388), 518−521), number published research papers on this emerging topic grown exponentially to approximately 200. critical review, we provide systematic framework classify morphologies. The fundamental mechanisms fabrication methods involved formation these morphologies are summarized. We then discuss transport solutes how phenomena could simultaneously improve permeance, selectivity, antifouling applications highlighted, future opportunities/needs identified. insights review guidance further development high-performance tailored wide range applications.

Язык: Английский

Процитировано

220

Ultrathin Membranes for Separations: A New Era Driven by Advanced Nanotechnology DOI
Shiyu Zhang, Liang Shen, Hao Deng

и другие.

Advanced Materials, Год журнала: 2022, Номер 34(21)

Опубликована: Март 3, 2022

Ultrathin membranes are at the forefront of membrane research, offering great opportunities in revolutionizing separations with ultrafast transport. Driven by advanced nanomaterials and manufacturing technology, tremendous progresses made over last 15 years fabrications applications sub-50 nm membranes. Here, an overview state-of-the-art ultrathin is first introduced, followed a summary fabrication techniques emphasis on how to realize such extremely low thickness. Then, different types membranes, categorized based their structures, that is, network, laminar, or framework discussed focus interplays among structure, methods, separation performances. Recent research development trends highlighted. Meanwhile, performances current for representative (gas liquid separation) thoroughly analyzed compared. Last, challenges material design, structure construction, coordination given, order fully potential facilitate translation from scientific achievements industrial productions.

Язык: Английский

Процитировано

151

Carbon Nanotube Interlayer Enhances Water Permeance and Antifouling Performance of Nanofiltration Membranes: Mechanisms and Experimental Evidence DOI
Li Long, Chenyue Wu, Zhe Yang

и другие.

Environmental Science & Technology, Год журнала: 2022, Номер 56(4), С. 2656 - 2664

Опубликована: Фев. 3, 2022

Interlayered thin-film nanocomposite (TFNi) membranes have been shown to achieve enhanced water permeance as a result of the gutter effect. Nevertheless, some studies report impaired separation performance after inclusion an interlayer. In this study, we resolve competing mechanisms transport in transverse direction vs that normal direction. To enable easy comparison, carbon nanotube (CNT)-incorporated TFNi with identical polyamide rejection layer but different interlayer thicknesses were investigated. While increasing thickness CNT facilitates (therefore improving effect), it simultaneously increases its hydraulic resistance An optimal 13.0 ± 0.7 L m–2 h–1 bar–1, which was more than doubled over control membrane 6.1 realized at moderate thickness, resulting from trade-off between these two mechanisms. demonstrate reduced fouling and improved reversibility for without interlayer, can be attributed uniform flux distribution. The fundamental revealed study lay solid foundation future development toward properties antifouling ability.

Язык: Английский

Процитировано

115

Nanovehicle-assisted monomer shuttling enables highly permeable and selective nanofiltration membranes for water purification DOI
Ruobin Dai, Huimin Zhou, Tianlin Wang

и другие.

Nature Water, Год журнала: 2023, Номер 1(3), С. 281 - 290

Опубликована: Фев. 27, 2023

Язык: Английский

Процитировано

98

Enhancing the permeability, anti-biofouling performance and long-term stability of TFC nanofiltration membrane by imidazole-modified carboxylated graphene oxide/polyethersulfone substrate DOI

Chengbao Geng,

Fangbo Zhao, Hongyan Niu

и другие.

Journal of Membrane Science, Год журнала: 2022, Номер 664, С. 121099 - 121099

Опубликована: Окт. 21, 2022

Язык: Английский

Процитировано

91

Significant roles of substrate properties in forward osmosis membrane performance: A review DOI
Mohammad Saeed Kahrizi, Ralph Rolly Gonzales, Lingxue Kong

и другие.

Desalination, Год журнала: 2022, Номер 528, С. 115615 - 115615

Опубликована: Фев. 10, 2022

Язык: Английский

Процитировано

90

Fabrication of novel thin-film nanocomposite polyamide membrane by the interlayer approach: A review DOI

Tengteng Xie,

Feiyang Li, Kuo Chen

и другие.

Desalination, Год журнала: 2023, Номер 554, С. 116509 - 116509

Опубликована: Март 3, 2023

Язык: Английский

Процитировано

57

Pressure-driven membrane desalination DOI
Weifan Liu, J. Livingston, Li Wang

и другие.

Nature Reviews Methods Primers, Год журнала: 2024, Номер 4(1)

Опубликована: Фев. 8, 2024

Язык: Английский

Процитировано

48

Recent advances of the interfacial polymerization process in gas separation membranes fabrication DOI

Chaoqi Ge,

Menglong Sheng,

Ye Yuan

и другие.

Journal of Membrane Science, Год журнала: 2023, Номер 683, С. 121854 - 121854

Опубликована: Июнь 16, 2023

Язык: Английский

Процитировано

46

Polyamide layer modulation for PA-TFC membranes Optimization: Developments, Mechanisms, and implications DOI

Guorong Xu,

Zi-Han An,

Min-Wang

и другие.

Separation and Purification Technology, Год журнала: 2023, Номер 311, С. 123200 - 123200

Опубликована: Янв. 20, 2023

Язык: Английский

Процитировано

45