Beyond steric selectivity of ions using ångström-scale capillaries

Goutham, Solleti; Keerthi, Ashok; Ismail, Abdulghani; Bhardwaj, Ankit; Jalali, Hamid; You, Yi; Li, YiHeng; Hassani, Nasim; Peng, Haoke; Martins, Marcos Vinicius Surmani; Wang, FengChao; Radha, Boya

doi:10.1038/s41565-023-01337-y

Cited by 21 publications

(26 citation statements)

References 44 publications

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“…Recent literature shows the development of angstrom-scale capillaries for ion selectivity, and different contamination studies are reported using silicon nitride (SiN x ), MoS 2 , etc. 119,120 However, further research into the use of MXene in the development of angstrom-scale capillaries is required. In addition to nanofluidics, MXene-based angstrofluidic membranes for osmotic energy harvesting, reverse osmosis, and other applications are anticipated in the coming years.…”

Section: Challenges and Future Perspectivesmentioning

confidence: 99%

Minireview on Fluid Manipulation Techniques for the Synthesis and Energy Applications of Two-Dimensional MXenes: Advances, Challenges, and Perspectives

Richard

Thomas²,

et al. 2023

Energy Fuels

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A new frontier in the design and applications of useful micro- and nanomaterials was unlocked by the combination of fluid mechanics with modern engineered technologies. Fluidic methods allow for the exact and active spatiotemporal manipulation of matter, which has enormous potential for the fabrication of advanced nanoplatforms with flexible material characteristics. Fluidic technologies bestow some advantages over conventional experimental methods, such as quick sample processing and precise fluid control during assays. When combined with different two-dimensional (2D) materials, these fluidic techniques opened up a new era in the area of material science and engineering. MXenes, the youngest family of layered 2D materials, have attracted great scientific attention as a result of their peculiar properties and are used for a multitude of applications. This review discusses the magnificent relationship between MXenes and fluid manipulation technique nanofluidics in the domain of energy research. This article proclaims a concise review of the synthesis, energy applications, challenges, and future outlook of MXenes in fluidic research. An emphasis is given to the applications of MXene-based fluidic techniques in the field of energy harvesting and storage. This analysis will provide anew insight into MXenes in the field of fluid manipulation techniques that followed custom approaches in the past and researchers to move toward a new direction in the future. This examinative article will fill a major gap in fluidic research in the world of materials. And to the best part of our perception, this is the first review that offers an overview of the combination of fluidics and MXenes for application, particularly in energy harvesting and storage devices.

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Section: Challenges and Future Perspectivesmentioning

confidence: 99%

Minireview on Fluid Manipulation Techniques for the Synthesis and Energy Applications of Two-Dimensional MXenes: Advances, Challenges, and Perspectives

Richard

Thomas²,

et al. 2023

Energy Fuels

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“…For closer insights into the nanoconfinement mechanism, the investigated spatial distribution and the position probabilities of the ion pairs inside the COF pore are shown in Figure S31A (Supporting Information) and Figure 4F, respectively. At the end of the dynamic simulation run, both the ions were pushed toward the wall of the COF pore due to the bigger size and their interaction with the functional groups (CO) from the linker [ 56 ] (Figure S31B, Supporting Information). This immobilization led to stable hydration shells –inhibiting the entropic solvent effect [ 57 ] during the nucleation process in the COF pores.…”

Section: Molecular Dynamics Study On Caco3 Nucleation Inhibitionmentioning

confidence: 99%

Precision Covalent Organic Frameworks for Surface Nucleation Control

et al. 2023

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Unwanted accumulation of ice and lime scale crystals on surfaces is a long‐standing challenge with major economic and sustainability implications. Passive inhibition of icing and scaling by liquid‐repellent surfaces are often inadequate, susceptible to surface failure under harsh conditions, and unsuitable for long‐term/real‐life usages. Such surfaces often require a multiplicity of additional features such as optical transparency, robust impact resistance, and ability to prevent contamination from low surface energy liquids. Unfortunately, most promising advances have relied on using perfluoro compounds, which are bio‐persistent and/or highly toxic. Here it is shown that organic, reticular mesoporous structures, covalent organic frameworks (COFs), may offer a solution. By exploiting simple and scalable synthesis of defect‐free COFs and rational post‐synthetic functionalization, nanocoatings with precision nanoporosity (morphology) are prepared that can inhibit nucleation at the molecular level without compromising the related contamination prevention and robustness. The results offer a simple strategy to exploit the nanoconfinement effect, which remarkably delays the nucleation of ice and scale formation on surfaces. Ice nucleation is suppressed down to −28 °C, scale formation is avoided for >2 weeks in supersaturated conditions, and jets of organic solvents impacting at Weber numbers >105 are resisted with surfaces that also offer optical transparency (>92%).

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“…However, it remains challenging to achieve high ionic conductivity at the same time due to the high energy barrier experienced by ions when entering narrow channels. Previous works found that 2D channels typically exhibit lower-than-bulk ionic mobility. ,,, Under extreme confinement, some of them even do not conduct any ions …”

Section: Introductionmentioning

confidence: 95%

“…A crucial task in ion separation is to conduct target ions with a high rate yet reject competing ions with high selectivity. Typically, channels or pores with a size comparable to single ions, i.e., in the Ångstrom scale, are required for achieving high ionic selectivity. − Such channels can be constructed by assembling two-dimensional (2D) nanosheets into layered membranes in which the interlayer spacings form uniform 2D channels with a height tunable from a few Å to above 1 nm. − Indeed, ion separation through 2D channels has attracted growing interest in recent years. ,,− By engineering the channel height, surface charge, and the specific interaction between ion, channel, and water, the ionic selectivity can be facilely tuned to enable highly efficient sieving of target ions. However, it remains challenging to achieve high ionic conductivity at the same time due to the high energy barrier experienced by ions when entering narrow channels.…”

Section: Introductionmentioning

confidence: 99%

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Two-Dimensional Sodium Channels with High Selectivity and Conductivity for Osmotic Power Generation from Wastewater

Huang,

Kan,

Fan

et al. 2023

ACS Nano

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Beyond steric selectivity of ions using ångström-scale capillaries

Cited by 21 publications

References 44 publications

Minireview on Fluid Manipulation Techniques for the Synthesis and Energy Applications of Two-Dimensional MXenes: Advances, Challenges, and Perspectives

Minireview on Fluid Manipulation Techniques for the Synthesis and Energy Applications of Two-Dimensional MXenes: Advances, Challenges, and Perspectives

Precision Covalent Organic Frameworks for Surface Nucleation Control

Two-Dimensional Sodium Channels with High Selectivity and Conductivity for Osmotic Power Generation from Wastewater

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