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Thin-layer WS2 Dispersion with LiOH, ~1-5nm, 1mg/mL, water
Product Type: 2D material dispersion
Research-grade laboratory product
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LABORATORY PROCUREMENT SUPPORT
For material selection, specification confirmation and quotation preparation, contact our technical sales team.
E-MAIL: inquiry@atomfair.com
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Manufacturer: Atomfair LLC
Brand: ATOMFAIR®
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What is the role of LiOH stabilizer in this thin-layer WS2 dispersion and how does it affect pH compatibility with downstream processing?
LiOH is used as a stabilizer to maintain the dispersion pH between 8-9, which is critical for preventing WS2 nanosheet aggregation in aqueous media. This mildly alkaline pH range must be matched with any subsequent reaction or deposition conditions, as acidic or strongly buffered environments may destabilize the dispersion or cause precipitation.
Can this 1 mg/mL WS2 dispersion be directly drop-cast or spin-coated without additional dilution or surfactant exchange?
The dispersion is supplied at 1 mg/mL in water with LiOH stabilizer and is intended for direct use in thin-film fabrication methods such as drop-casting or spin-coating. However, the presence of LiOH and the pH 8-9 environment may influence wetting and film uniformity on hydrophobic substrates, so surface pretreatment or solvent exchange should be evaluated for specific substrates.
What storage and handling conditions are required to maintain the ~1-5 nm thickness distribution and prevent sedimentation of this WS2 dispersion?
The product is a water-based dispersion with a nominal thickness of ~1-5 nm and a concentration of 1 mg/mL. To preserve the nanosheet size distribution and prevent irreversible aggregation, storage at 2-8°C in a sealed container away from light is recommended, and the dispersion should be gently agitated before each use to resuspend any settled material.
This thin-layer WS2 dispersion in water at 1 mg/mL with LiOH stabilizer and pH 8-9 is evaluated for liquid-phase exfoliation and coating applications, where the alkaline stabilizer prevents re-aggregation but imposes solvent compatibility constraints.
Positive
- Alkaline-stabilized dispersion: LiOH stabilizer maintains pH 8-9, suppressing restacking of thin-layer WS2 nanosheets in aqueous media for extended shelf life.
- Controlled nanoscale thickness: Thickness range ~1-5 nm corresponds to few-layer WS2, providing high surface area for catalytic or optoelectronic studies.
Trade-offs
- Alkaline pH limits compatibility: pH 8-9 requires acid-sensitive substrates or downstream processes to be evaluated for chemical compatibility with the basic stabilizer.
- Fixed concentration and volume: Supplied at 1 mg/mL in 200 mL only; dilution or concentration adjustment may alter stability and requires validation.
Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.
To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.
Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD excl. heavy equipment). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).
