Liquid Exfoliation
Liquid Exfoliation - Related Videos
08:54
Synthesis and Exfoliation of Discotic Zirconium Phosphates to Obtain Colloidal Liquid Crystals
0 Views •
Cited by 3 •
2016
A two dimensional model material of discotic zirconium phosphate was developed. The inorganic crystal with lamellar structure was synthesized by hydrothermal, reflux, and microwave-assisted methods. On exfoliation with organic molecules, layered crystals can be converted to monolayers, and nematic liquid crystal phase was formed at sufficient concentration of monolayers.
10:41
Preparation of Liquid-exfoliated Transition Metal Dichalcogenide Nanosheets with Controlled Size and Thickness: A State of the Art Protocol
0 Views •
Cited by 38 •
2016
A protocol for the liquid exfoliation of layered materials to nanosheets, their size selection and size measurement by microscopic and spectroscopic techniques is presented.
12:04
Exfoliation of Egyptian Blue and Han Blue, Two Alkali Earth Copper Silicate-based Pigments
0 Views •
Cited by 34 •
2014
The preparation and exfoliation of CaCuSi4O10 and BaCuSi4O10 are described. Upon stirring in hot water, CaCuSi4O10 spontaneously exfoliates into monolayers, whereas BaCuSi4O10 requires ultrasonication in organic solvents. Near infrared (NIR) imaging illustrates the NIR emission properties of these materials, and aqueous dispersions of these nanomaterials are useful for solution processing.
09:21
Efficiency of Liquid-liquid Extraction
0 Views •
2023
Source: Kerry M. Dooley and Michael G. Benton, Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA Liquid-liquid extraction (LLE) is a separation technique used instead of distillation when either: (a) the relative volatilities of the compounds to be separated are very similar; (b) one or more of the mixture components are temperature sensitive even near ambient conditions; (c) the distillation would require a very low pressure or a very high distillate/feed...
10:18
Exfoliation and Analysis of Large-area, Air-Sensitive Two-Dimensional Materials
0 Views •
Cited by 8 •
2019
A method for exfoliating large thin flakes of air sensitive two-dimensional materials and safely transporting them for analysis outside of a glovebox is presented.
FAQs
Solvent interactions and stabilizing additives help keep separated nanosheets dispersed after the layered crystal has been broken apart. Without this support, the thin flakes may restack, reducing the usefulness of the dispersion for later processing. Selecting conditions that maintain separation is therefore important when preparing liquid formulations for coatings, inks, composites, sensors, or energy-storage components.
Ultrasound and high-shear mixing supply the mechanical action needed to overcome weak forces between adjacent layers. Their role is not to redesign the crystal chemically, but to promote separation into thinner flakes while the material remains dispersed in a liquid. The resulting approach is compatible with solution processing, which supports subsequent deposition, blending, or assembly.
Flake thickness influences how the resulting nanosheets express electrical, mechanical, and optical properties. Liquid exfoliation is valuable because it can produce thinner flakes from layered crystals while retaining a format suitable for processing in a dispersion. Engineering teams can therefore connect material selection and exfoliation conditions with the properties required for a particular coating, composite, sensor, or energy-storage component.
A typical workflow begins by dispersing a layered crystal in a suitable liquid, followed by ultrasound or high-shear mixing to separate the layers. Solvent interactions or stabilizing additives are used to limit restacking. Once a stable dispersion is obtained, it can be deposited, blended, or assembled into the intended engineering structure rather than handled only as a bulk crystal.
The resulting nanosheet dispersions can be deposited as coatings, formulated as inks, or blended into composites. They can also be assembled into sensors and energy-storage components. These routes allow solution-based material handling to connect nanoscale layered structures with practical engineered forms, while the nanosheets contribute tailored electrical, mechanical, or optical behavior to the selected application.
Its solution-based format makes liquid exfoliation compatible with processing routes that are easier to adapt for practical manufacturing than methods limited to isolated crystal handling. The approach supports advanced materials based on graphene, transition-metal dichalcogenides, and other layered nanomaterials. In engineering, that combination of scalability and property tailoring is relevant to coatings, inks, composites, sensors, and energy-storage components.