Heterogeneous Two-dimensional lamellar Ti3C2Tx membrane for osmotic power harvesting

Wang, Jin; Wang, Lu; Shao, Ning; He, Miaolu; Shang, Penghui; Cui, Zheng; Liu, Sensen; Jiang, Na; Wang, Xudong; Wang, Lei

doi:10.1016/j.cej.2022.139531

Cited by 33 publications

(25 citation statements)

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“…The positively charged Ti 3 C 2 T x nanosheets were prepared based on the covalent bonds formed between the silane and hydroxyl groups on the Ti 3 C 2 T x surface through dehydration reactions [90] . Using Ti 3 C 2 T x nanosheets with opposite charge polarity, a heterogeneous Ti 3 C 2 T x membrane was constructed as an experimental platform for energy conversion investigations [91] . Hydrophilic −NH 2 and −COOR and hydrophobic −C 6 H 6 and −C 12 H 26 groups were grafted onto the nanosheet surface to adjust the interaction between the solvent molecules and channel surface, resulting in the regulable permeation of polar and nonpolar solvents [92] .…”

Section: D Materials and Fabricationmentioning

confidence: 99%

“…a) Nanofluidic reverse electrodialysis system constructed from Ti 3 C 2 T x membranes with different charge polarities [151] . b) I–V curves of the heterogeneous membrane with opposite transmembrane salinity gradients [91] . c) Multilayer membrane assembled by a GO nanosheet and SNF nanofiber [173] .…”

Section: Applicationsmentioning

confidence: 99%

“…By optimizing the membrane structure, a nanochannel with a combined asymmetric geometry and surface charge polarity was successfully prepared, and the maximum value of the output power density reached 16 W m −2 using natural brine and fresh water (Figure 9b). [91] …”

Section: Applicationsmentioning

confidence: 99%

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Selective Ion Transport in Two‐Dimensional Lamellar Nanochannel Membranes

Wang

Zhou

et al. 2023

Angewandte Chemie

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Precise and ultrafast ion sieving is highly desirable for many applications in environment-, energy-, and resource-related fields. The development of a permselective lamellar membrane constructed from parallel stacked twodimensional (2D) nanosheets opened a new avenue for the development of next-generation separation technology because of the unprecedented diversity of the designable interior nanochannels. In this Review, we first discuss the construction of homo-and heterolaminar nanoarchitectures from the starting materials to the emerging preparation strategies. We then explore the property-performance relationships, with a particular emphasis on the effects of physical structural features, chemical properties, and external environment stimuli on ion transport behavior under nanoconfinement. We also present existing and potential applications of 2D membranes in desalination, ion recovery, and energy conversion. Finally, we discuss the challenges and outline research directions in this promising field.

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Section: D Materials and Fabricationmentioning

confidence: 99%

Section: Applicationsmentioning

confidence: 99%

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Selective Ion Transport in Two‐Dimensional Lamellar Nanochannel Membranes

Wang

Zhou

et al. 2023

Angewandte Chemie

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“…Among these materials, MXenes have attracted considerable attention due to their unique physical and chemical properties. Notably, Ti 3 C 2 T x , a prominent representative of the MXene family, exhibits a remarkably higher Young’s modulus of 0.33 TPa in comparison to GO and MoS 2 . , Moreover, Ti 3 C 2 T x membranes have demonstrated remarkable antibacterial properties, , excellent hydrophilicity, , and an abundance of functional groups on their surfaces, offering promising opportunities for further functionalization to enhance ion selectivity . As a result of these advantages, Ti 3 C 2 T x has become a critical building block for constructing nanochannel membranes in the field of ion sieving.…”

Section: Introductionmentioning

confidence: 99%

“…11,23 Moreover, Ti 3 C 2 T x membranes have demonstrated remarkable antibacterial properties, 11,24 excellent hydrophilicity, 25,26 and an abundance of functional groups on their surfaces, offering promising opportunities for further functionalization to enhance ion selectivity. 27 As a result of these advantages, Ti 3 C 2 T x has become a critical building block for constructing nanochannel membranes in the field of ion sieving. For example, an Al 3+ -intercalated MXene membrane ).…”

Section: ■ Introductionmentioning

confidence: 99%

Selective Ion Transport in Two-Dimensional Ti₃C₂T_x Nanochannel Decorated by Crown Ether

et al. 2023

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Ion sieving is a critical process employed in various applications, such as desalination and ion extraction. Nevertheless, achieving rapid and accurate ion sieving remains an exceptionally difficult task. Drawing inspiration from the effective ion sieving capabilities of biological ion channels, we present the development of two-dimensional Ti 3 C 2 T x ion nanochannels incorporating 4aminobenzo-15-crown-5-ether molecules as specific ion binding sites. These binding sites had a significant influence on the ion transport process and improved ion recognition. Permeation of both Na + and K + was facilitated because their ion diameters are compatible with the cavity in the ether ring. Moreover, owing to the strong electrostatic interactions, the permeation rate for Mg 2+ increased by a factor of 55 compared to that for the pristine channels, which was higher than those of all monovalent cations. Furthermore, the transport rate for Li + was relatively lower than those of Na + and K + , which was attributed to difficult binding of the Li + to the oxygens in the ether ring. Consequently, the ion selectivities of the composite nanochannel were up to 7.6 for Na + /Li + and 9.2 for Mg 2+ /Li + . Our work presents a straightforward approach to creating nanochannels exhibiting precise ion discrimination.

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Engineered Heterogenous Subnanochannel Membranes with a Tri‐Continuous Pore Structure of Large Geometry Gradient for Massively Enhanced Osmotic Power Conversion from Organic Solutions

Fauziah,

Yeh

2023

Adv Funct Materials

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Heterogenous nanofluidic membranes with bi‐layer structures and ionic diode effect are shown great potential in efficiently harvesting the energy existing in a salinity gradient (or called the osmotic power conversion). However, exploitation of a heterogenous membrane with superior ion selectivity, excellent conductance, and strong ionic diode characteristics has remained a great challenge. Here, a novel heterogenous subnanochannel membrane with a tri‐continuous pore structure of a large geometry gradient ranging from sub‐nanoscale to nanoscale to sub‐microscale, which is composed of a thin and crack‐free layer of zeolitic imidazolate framework‐8 (ZIF‐8)/polystyrene sulfonate (PSS) membranes and an aligned branch‐type alumina nanochannel membrane (BANM) is reported. It is demonstrated that such a tri‐continuous pore structure can endow the exploited membrane, ZIF‐8/PSS@BANM, with enhanced ion selectivity, strong ion current rectification, and ultrafast ion transport properties, in organic electrolyte solutions. Thus, an amazingly high power of ≈50.5 W m−2 is produced by mixing a 2 m LiCl‐methanol and pure methanol solutions, which is over 45‐fold higher than the existing membranes. Realizing high ion selectivity and amplified directional ion transport at sub‐nanoconfined spaces in organic solvents paves the new way to develop ion‐channel‐mimetic membranes toward efficient ion separation and high‐performance energy harvesters for battery applications.

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Heterogeneous Two-dimensional lamellar Ti3C2Tx membrane for osmotic power harvesting

Cited by 33 publications

References 50 publications

Selective Ion Transport in Two‐Dimensional Lamellar Nanochannel Membranes

Selective Ion Transport in Two‐Dimensional Lamellar Nanochannel Membranes

Selective Ion Transport in Two-Dimensional Ti₃C₂T_x Nanochannel Decorated by Crown Ether

Engineered Heterogenous Subnanochannel Membranes with a Tri‐Continuous Pore Structure of Large Geometry Gradient for Massively Enhanced Osmotic Power Conversion from Organic Solutions

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Heterogeneous Two-dimensional lamellar Ti3C2Tx membrane for osmotic power harvesting

Cited by 33 publications

References 50 publications

Selective Ion Transport in Two‐Dimensional Lamellar Nanochannel Membranes

Selective Ion Transport in Two‐Dimensional Lamellar Nanochannel Membranes

Selective Ion Transport in Two-Dimensional Ti3C2Tx Nanochannel Decorated by Crown Ether

Engineered Heterogenous Subnanochannel Membranes with a Tri‐Continuous Pore Structure of Large Geometry Gradient for Massively Enhanced Osmotic Power Conversion from Organic Solutions

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Selective Ion Transport in Two-Dimensional Ti₃C₂T_x Nanochannel Decorated by Crown Ether