Formation processes, size changes, and properties of nanosheets derived from exfoliation of soft layered inorganic–organic composites

Mizuguchi, Ryosuke; Imai, Hiroaki; Oaki, Yuya

doi:10.1039/d0na00084a

Cited by 11 publications

(8 citation statements)

References 71 publications

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“…the exfoliation of the layered composites proceeds with intercalation of dispersion medium in the interlayer space consisting of the host and guest. [60] Then, the osmotic swelling induces delamination into the nanosheets, as observed in the other exfoliation system in aqueous media. [20][21][22] The higher affinity between the guest and medium molecules facilitates the intercalation and osmotic swelling for the exfoliation.…”

Section: A Yield Prediction Model For Soft Layered Compositesmentioning

confidence: 87%

Efficient Syntheses of 2D Materials from Soft Layered Composites Guided by Yield Prediction Model: Potential of Experiment‐Oriented Materials Informatics

Noda

Igarashi

Imai

et al. 2020

Advcd Theory and Sims

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Exfoliation is a common route to synthesize 2D materials, such as monolayered and fewlayered nanosheets. However, it is not easy to control the breaking-down process. The repsent work shows a new exfoliation strategy for generation of nanosheets from soft layered composites in high yield. Soft layered composites of inorganic hosts and organic guests are exfoliated into nanosheets in organic dispersion media. A simple yield-prediction model is constructed on small-scale our own experimental data by sparse modeling, a data-scientific approach, combined with chemical perspective.

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Section: A Yield Prediction Model For Soft Layered Compositesmentioning

confidence: 87%

Efficient Syntheses of 2D Materials from Soft Layered Composites Guided by Yield Prediction Model: Potential of Experiment‐Oriented Materials Informatics

Noda

Igarashi

Imai

et al. 2020

Advcd Theory and Sims

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“…[61] Such a lateral size reduction has also been observed in the case of "soft" exfoliation, by swelling in organic solvents; the key parameter to control the lateral fracturing being the exfoliation time. [35,65] In our case, the shear rate governs the exfoliation efficiency and fracturing. Higher shear rates and reaction times lead to much smaller particles as already observed in the case of Van der Waals materials.…”

Section: Preparation and Characterization Of Functionalized Oxide Nanosheet Dispersionsmentioning

confidence: 90%

Fast and efficient shear-force assisted production of covalently functionalized oxide nanosheets

Payet

Bouillet

Leroux

et al. 2022

Journal of Colloid and Interface Science

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HypothesisWhile controlled and efficient exfoliation of layered oxides often remains a time consuming challenge, the surface modification of inorganic nanosheets is of outmost importance for future applications. The functionalization of the bulk material prior to exfoliation should allow the application of tools developped for Van der Waals materials to directly produce functionalized oxide nanosheets. ExperimentsThe Aurivillius phase Bi 2 SrTa 2 O 9 is functionalized by a linear aliphatic phosphonic acid via microwave-assisted reactions. The structure of the hybrid material and the coordination of the phosphonate group is scrutinized, notably by Pair Distribution Function. This functionalized layered oxide is then exfoliated in one hour in organic solvent, using high shear force dispersion.The obtained nanosheets are characterized in suspension and as deposits to check their chemical integrity. FindingsThe covalent functionalization decreases the electrostatic cohesion between the inorganic layers leading to an efficient exfoliation in short time under shearing. The functionalization of the bulk material is preserved on the nanosheets upon exfoliation and plays a major role to enable liquid-phase exfoliation and in the stability of the resulting suspensions. This strategy is very promising for the straighforward preparation of functionalized nanosheets, paving the way for versatile design of new (multi)functional hybrid nanosheets for various potential applications.

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“…Then, the swelling induces the exfoliation into the nanosheets. [54][55][56][57] The selected descriptors in the models (Eqs. 1-3) are interpretable and reasonable in the context of the real exfoliation behavior.…”

Section: Advantages Of Spm-s To Small Datamentioning

confidence: 99%

Sparse modeling for small data: case studies in controlled synthesis of 2D materials

et al. 2022

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Formation processes, size changes, and properties of nanosheets derived from exfoliation of soft layered inorganic–organic composites

Abstract: A new exfoliation route is developed to obtain 2D nanomaterials through formation of soft layered inorganic–organic composites.

Cited by 11 publications

References 71 publications

Efficient Syntheses of 2D Materials from Soft Layered Composites Guided by Yield Prediction Model: Potential of Experiment‐Oriented Materials Informatics

Efficient Syntheses of 2D Materials from Soft Layered Composites Guided by Yield Prediction Model: Potential of Experiment‐Oriented Materials Informatics

Fast and efficient shear-force assisted production of covalently functionalized oxide nanosheets

Sparse modeling for small data: case studies in controlled synthesis of 2D materials

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