Bioinspired 2D nanofluidic membranes for energy applications

Lei, Dandan; Zhang, Zhen; Jiang, Lei

doi:10.1039/d3cs00382e

Cited by 2 publications

(3 citation statements)

References 270 publications

(311 reference statements)

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“…This scenario underscores the urgent need to drive innovations in renewable energy and refine water purification techniques to ensure sustainable development worldwide. 4−6 The development of membranes with superior ion selectivity and permeability represents a pivotal solution to these imminent challenges, as outlined by several key points: (1) The effectiveness of numerous energy-generation technologies, such as batteries, fuel cells, and electrolyzers, hinges on the selective ion transport capabilities of membranes; 7,8 (2) Through selectively transporting an ion, these membranes can precisely remove harmful ionic pollutants, thereby reducing environmental risks from industrial waste streams and potentially recovering valuable elements from aquatic ecosystems. 9−11 Despite the significant potential benefits of ion-selective membranes in both economic and ecological realms, their full potential remains underutilized, primarily due to limitations in current materials.…”

Section: Introductionmentioning

confidence: 99%

“…The rapid expansion of industrial sectors alongside a burgeoning global population is set to exert unprecedented strains on our finite energy and water resources in the near future. This scenario underscores the urgent need to drive innovations in renewable energy and refine water purification techniques to ensure sustainable development worldwide. − The development of membranes with superior ion selectivity and permeability represents a pivotal solution to these imminent challenges, as outlined by several key points: (1) The effectiveness of numerous energy-generation technologies, such as batteries, fuel cells, and electrolyzers, hinges on the selective ion transport capabilities of membranes; , (2) Through selectively transporting an ion, these membranes can precisely remove harmful ionic pollutants, thereby reducing environmental risks from industrial waste streams and potentially recovering valuable elements from aquatic ecosystems. − Despite the significant potential benefits of ion-selective membranes in both economic and ecological realms, their full potential remains underutilized, primarily due to limitations in current materials. − Numerous research efforts have been dedicated to enhancing the interaction between ions and membranes while also augmenting the free volume within membranes to improve selective ion transport. − However, traditional polymeric membranes face challenges in simultaneously enhancing selectivity and permeability. This is due to their multiscale heterogeneity, which includes irregular pore sizes and random placement of functional chemical groups.…”

Section: Introductionmentioning

confidence: 99%

“…The effectiveness of numerous energy-generation technologies, such as batteries, fuel cells, and electrolyzers, hinges on the selective ion transport capabilities of membranes; 7,8 (2) Through selectively transporting an ion, these membranes can precisely remove harmful ionic pollutants, thereby reducing environmental risks from industrial waste streams and potentially recovering valuable elements from aquatic ecosystems. 9−11 Despite the significant potential benefits of ion-selective membranes in both economic and ecological realms, their full potential remains underutilized, primarily due to limitations in current materials.…”

Section: Introductionmentioning

confidence: 99%

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Advancing Ion Separation: Covalent-Organic-Framework Membranes for Sustainable Energy and Water Applications

Xian,

Wu,

Lai

et al. 2024

Acc. Chem. Res.

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Metrics & MoreArticle Recommendations * sı Supporting Information CONSPECTUS: Membranes are pivotal in a myriad of energy production processes and modern separation techniques. They are essential in devices for energy generation, facilities for extracting energy elements, and plants for wastewater treatment, each of which hinges on effective ion separation. While biological ion channels show exceptional permeability and selectivity, designing synthetic membranes with defined pore architecture and chemistry on the (sub)nanometer scale has been challenging. Consequently, a typical trade-off emerges: highly permeable membranes often sacrifice selectivity and vice versa. To tackle this dilemma, a comprehensive understanding and modeling of synthetic membranes across various scales is imperative. This lays the foundation for establishing design criteria for advanced membrane materials. Key attributes for such materials encompass appropriately sized pores, a narrow pore size distribution, and finely tuned interactions between desired permeants and the membrane. The advent of covalent-organic-framework (COF) membranes offers promising solutions to the challenges faced by conventional membranes in selective ion separation within the water-energy nexus. COFs are molecular Legos, facilitating the precise integration of small organic structs into extended, porous, crystalline architectures through covalent linkage. This unique molecular architecture allows for precise control over pore sizes, shapes, and distributions within the membrane. Additionally, COFs offer the flexibility to modify their pore spaces with distinct functionalities. This adaptability not only enhances their permeability but also facilitates tailored interactions with specific ions. As a result, COF membranes are positioned as prime candidates to achieve both superior permeability and selectivity in ion separation processes.In this Account, we delineate our endeavors aimed at leveraging the distinctive attributes of COFs to augment ion separation processes, tackling fundamental inquiries while identifying avenues for further exploration. Our strategies for fabricating COF membranes with enhanced ion selectivity encompass the following: (1) crafting (sub)nanoscale ion channels to enhance permselectivity, thereby amplifying energy production;(2) implementing a multivariate (MTV) synthesis method to control charge density within nanochannels, optimizing ion transport efficiency; (3) modifying the pore environment within confined mass transfer channels to establish distinct pathways for ion transport. For each strategy, we expound on its chemical foundations and offer illustrative examples that underscore fundamental principles. Our efforts have culminated in the creation of groundbreaking membrane materials that surpass traditional counterparts, propelling advancements in sustainable energy conversion, waste heat utilization, energy element extraction, and pollutant removal. These innovations are poised to redefine energy systems and industrial wastewater m...

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Advancing Ion Separation: Covalent-Organic-Framework Membranes for Sustainable Energy and Water Applications

Xian,

Wu,

Lai

et al. 2024

Acc. Chem. Res.

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On-Water Surface Synthesis of Two-Dimensional Polymer Membranes for Sustainable Energy Devices

Ni,

Wang,

Feng

2024

Acc. Chem. Res.

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Metrics & MoreArticle Recommendations CONSPECTUS: Ion-selective membranes are key components for sustainable energy devices, including osmotic power generators, electrolyzers, fuel cells, and batteries. These membranes facilitate the flow of desired ions (permeability) while efficiently blocking unwanted ions (selectivity), which forms the basis for energy conversion and storage technologies. To improve the performance of energy devices, the pursuit of high-quality membranes has garnered substantial interest, which has led to the exploration of numerous candidates, such as polymeric membranes (e.g., polyamide and polyelectrolyte), laminar membranes (e.g., transition metal carbide (MXene) and graphene oxide (GO)) and nanoporous 2D membranes (e.g., single-layer MoS 2 and porous graphene). Despite impressive progress, the trade-off effect between ion permeability and selectivity remains a major scientific and technological challenge for these membranes, impeding the efficiency and stability of the resulting energy devices. Two-dimensional polymers (2DPs), which represent monolayer to few-layer covalent organic frameworks (COFs) with periodicity in two directions, have emerged as a new candidate for ion-selective membranes. The crystalline 2DP membranes (2DPMs) are typically fabricated either by bulk crystal exfoliation followed by filtration or by direct interfacial synthesis. Recently, the development of surfactant-monolayer-assisted interfacial synthesis (SMAIS) method by our group has been pivotal, enabling the synthesis of various highly crystalline and large-area 2DPMs with tunable thicknesses (1 to 100 nm) and large crystalline domain sizes (up to 120 μm 2 ). Compared to other membranes, 2DPMs exhibit well-defined one-dimensional (1D) channels, customizable surface charge, ultrahigh porosity, and ultrathin thickness, enabling them to overcome the permeability-selectivity trade-off challenge. Leveraging these attributes, 2DPMs have established their critical roles in diverse energy devices, including osmotic power generators and metal ion batteries, opening the door for next-generation technology aimed at sustainability with a low carbon footprint.In this Account, we review our achievements in synthesizing 2DPMs through the SMAIS method and highlight their selective-iontransport properties and applications in sustainable energy devices. We initially provide an overview of the SMAIS method for producing highly crystalline 2DPMs by utilizing the programmable assembly and enhanced reactivity/selectivity on the water surface. Subsequently, we discuss the critical structural parameters of 2DPMs, including pore sizes, charged sites, crystallinity, and thickness, to elucidate their roles in selective ion transport. Furthermore, we present the burgeoning landscape of energy device applications for 2DPMs, including their use in osmotic power generators and as electrode coating in metal ion batteries. Finally, we conclude persistent challenges and future prospects encountered in synthetic chemistry, material science, and...

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Bioinspired 2D nanofluidic membranes for energy applications

Abstract: Bioinspired 2D nanofluidic membranes enable efficient and selective ion transport. Further research in this area is essential to facilitate the development of high-performance energy conversion and storage devices for a sustainable future.

Cited by 2 publications

References 270 publications

Advancing Ion Separation: Covalent-Organic-Framework Membranes for Sustainable Energy and Water Applications

Advancing Ion Separation: Covalent-Organic-Framework Membranes for Sustainable Energy and Water Applications

On-Water Surface Synthesis of Two-Dimensional Polymer Membranes for Sustainable Energy Devices

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