SKU: 1281816185

Few Layers WS2 Dispersion 0.1 mg/mL

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Description

Few Layers WS2 Dispersion 0.1 mg/mLProduct Name NameFew Layers WS2 Dispersion 0. 1 mg mL Product Overview Tungsten disulfide (WS2) is a type of transition metal sulfide (TMDC) with a graphene like layered structure, where the layers are stacked together by weak van der Waals forces. Single layer WS2 is composed of three layers of atoms, with the atomic planes of W and S arranged in a hexagonal array. The W atoms are sandwiched between the two layers of S atoms, forming an S W S atomic

Product Name

Name:Few Layers WS2 Dispersion 0.1 mg/mL


Product Overview

 

Tungsten disulfide (WS2) is a type of transition metal sulfide (TMDC) with a graphene like layered structure, where the layers are stacked together by weak van der Waals forces. Single layer WS2 is composed of three layers of atoms, with the atomic planes of W and S arranged in a hexagonal array. The W atoms are sandwiched between the two layers of S atoms, forming an S-W-S atomic layer structure with a "sandwich" structure. Multi layer or block WS2 is composed of single layers stacked together. Depending on the stacking method of the single layers, WS2 has three crystal structures: 1T, 2H, and 3R.

The synthesis methods of WS2 are mainly divided into two categories: "top-down" stripping method and "bottom-up" method. The "top-down" exfoliation method includes micro mechanical exfoliation, liquid-phase exfoliation, and lithium-ion intercalation, mainly using physical means to exfoliate the bulk WS2 into a single-layer or few layer layered structure. The "bottom-up" method includes chemical vapor deposition, hydrothermal method, and high-temperature thermal decomposition method, mainly using chemical means to grow atoms and molecules into nanoscale thin films and granular WS2 under certain environmental conditions.

The WS2 provided by Xianfeng is prepared by lithium intercalation method, using n-butyl lithium as intercalation agent to insert lithium ions into the interlayer of WS2, forming LixWS2 intercalation compound. The intercalation compound reacts violently with solvent water to generate a large amount of H2, thereby increasing the interlayer spacing of WS2 and weakening the van der Waals forces between layers. After ultrasonic treatment, thin and few layer WS2 dispersions are obtained. The WS2 nanosheets obtained by lithium intercalation method have a 1T-2H phase hybrid structure. According to XPS calculation, the fitting ratio of 1T phase is about 60% (the values may vary between different batches).


Technical Parameter

 

Diameter:.1-4 μm

Layers:-10

Thickness:-8 nm

Concentration:.1 mg/mL

Solvent:water or EtOH

Stablizer:LiOH

 

Product Features

 

1. Good dispersibility: Dispersions of different types of solvents are available (water, ethanol, isopropanol), as well as WS2 powder obtained by freeze-drying the dispersion.

2. Multiple active sites: It has good catalytic performance and a large specific surface area that can be used to load other catalysts to improve catalytic efficiency.

3. Excellent light absorption ability: It has strong absorption ability for near-infrared light and can be used for photocatalytic water splitting to produce hydrogen, organic pollutant degradation, etc.

4. Adjustable size and thickness: Different diameters and thicknesses of nanosheets can be customized to meet the experimental needs of different researchers.

 

Application Fields

 

1. Electronic and optoelectronic devices: The band structure is closely related to the thickness of the material layers, and the adjustability of WS2 thickness can give it different optoelectronic properties. Single layer WS2 has the advantages of high electron mobility, large on/off current ratio, and current carrying capacity, and can be used in the manufacturing of electronic devices such as transistors.

2. Electrochemical biosensors: WS2 exhibits excellent electrochemical sensing performance due to its large specific surface area, good electron mobility, and high electron density of states,

It can be used to detect biomolecules such as DNA and glucose, and has excellent selectivity for some organic molecules such as formaldehyde, ethanol, and benzene.

3. Biomedical: WS2 has good light absorption ability in the near-infrared region, which can convert light energy into heat energy. The high temperature generated can cause tumor cell apoptosis, and it also has good biocompatibility, making it an excellent photothermal conversion material.

4. Energy storage: WS2, due to its unique layered structure, can provide certain adsorption sites for energy storage; Meanwhile, WS2 has good stability and can be reused for cyclic charging and discharging, and is widely used in fields such as fuel cells, supercapacitors, and lithium batteries.

5. Catalyst: WS2, due to its light weight and large specific surface area, can be used as a photocatalyst. After visible light irradiation, WS2 can absorb photons, undergo electron transitions to form electron hole pairs, and react with water to generate hydroxyl radicals with high reactivity and strong oxidizing properties, which degrade organic matter into small molecules and inorganic ions.


INSTRUCTION FOR USE

Attention: When taking TEM images, it is necessary to use micro grids (with the thinnest possible thickness) to prepare samples, which makes it easy to observe their layered structure; Dispersed liquid is prone to oxidation when exposed to air, and its color will fade over time. When storing, inert gas can be introduced to remove oxygen and extend the use time; The dispersion liquid will contain lithium hydroxide, which acts as a stabilizer to aid dispersion and can be removed by centrifugal washing; The powder is obtained by freeze-drying the dispersion, and its dispersibility is slightly worse than that of the original solution.


Related Information

Please e-mail for the detailed characterization data.

E-mail:[email protected]

 

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SKU: 1281816185

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Amber
Battle Creek, US
★★★★★ 5
Totally worth the good price!
Size: 6 inch (Pack of 1), Style: Rabbit
My little shi-tzu has a favorite toy. It’s a stuffed lamb that she has, over time, completely torn to shreds. I needed something cheap on another order to get same day shipping, and I’m now tickled to pieces that I thought to find her something new to play with! When the box arrived, I called my little Mocha and built-up the opening of the box letting her know she had something in there. We never really get to buy her anything, so this was just too much fun 😂 As soon as I picked it up, I planned to toss it for her cause she loves to fetch things. Yeah, didn’t happen. She was so excited, she had this bunny out of my hands before they made it out of the box! Love that it’s made for dogs, and comes without things you might need to worry about, like eye buttons popping off, etc. The little tail did come off pretty quickly and since it was small, I tossed it. The bunny itself is played with at least once or twice daily, and she hasn’t broken through to the stuffing yet. So, for a cheap dog toy, it’s holding up really well. Happy with this purchase and would order something from them again.
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Reviewed in the United States on February 14, 2018
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Verified Purchase
Amazon Customer
Lake Worth, US
★★★★★ 5
Adorable, but probably not for medium+ dogs
Size: 6 inch (Pack of 1), Style: Rabbit
I got this for my 20 and 30 pound dogs to play with, and though I didn't really expect for it to be a durable or long-term toy for them, I think it felt like it was well-made and would probably suit dogs that are up to 15 pounds the best. It felt better than other dog toys in this price point but was filled with holes already after the first time my dog played with it on his own, which I think is probably more of a fabric issue than an actual quality issue, because it was more of a teeth puncture than seams ripping. I hope this helps! I would definitely recommend it to anyone with a small breed dog who doesn't have the same bite strength .
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Reviewed in the United States on September 22, 2023
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Logan McDaniel
New York, US
★★★★★ 5
My dog loves these
Size: 9 inch (Pack of 1), Style: Bone
My dog usually doesn’t play with toys but I decided to try this one. She loved it so much that I ordered 3 more to have on hand! Some of the stitching on the first one is coming apart but it’s actually quite durable given how tough she is on it.
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Reviewed in the United States on March 25, 2026
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Dagma
Grantham, US
★★★★★ 4
Tail came off right away
Size: 6 inch (Pack of 1), Style: Rabbit
Our little dog kept stealing a stuffed animal off our granddaughter's bed, so I decided to get one that was better suited to him. I liked that there weren't any eyes to pull off, although it does look weird without eyes. He really likes it and carries it around. The bad part is the tail came off almost immediately. He isn't one to chew up toys, so I just don't think it was attached firmly. I haven't tried to put it back on. I may just leave it off. So far the rest of the bunny is holding up.
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Reviewed in the United States on December 27, 2020
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Peepohappy
Belleville, US
★★★★★ 5
Comfy slippers!
Size: 7.5 inch (Pack of 1), Style: Slipper, Size: 7.5 inch (Pack of 1), Style: Slipper
My dog eats a lot of things she shouldn’t but she hasn’t eaten the slipper yet. She loves the slipper almost as much as she loves rocks. Rocks are forbidden so we’ve convinced her the slipper is just as forbidden so she holds the slipper in her mouth instead of rocks when we’re on our walks. It’s very soft and it makes for a great hat to cover her snoot indoors. We’ve replaced the first slipper because she likes destroying the squeakers. She hasn’t been able to rip it out the squeaker or tear the slipper, but she isn’t too big on ripping things open unless they’re loaded with fluff. I guess we have a pair of slippers now.
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Reviewed in the United States on April 24, 2026

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