SKU: 80150399221

Thin Layer WS2 Nano Powder

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Description

Thin Layer WS2 Nano PowderProduct Name Name: thin Layer WS2 Nano Powder 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

Product Name

Name: thin Layer WS2 Nano Powder


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

 

Flake Size: 20-500 nm

Thickness: 1-5 nm

 

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: 80150399221

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4.9 ★★★★★
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Bonnie
New York, US
★★★★★ 5
All The Things!!
Format: Kindle
This is definitely worth reading! The spice is nice, but the story itself is truly an epic literary treat! Tessa and her Alphas are a powerhouse force of nature who will capture your heart. This story is also a great reminder of how fickle life can be and how quickly everything can change for anyone. Every single person, billionaire to janitor, is nothing but one tragic event away from being in the same situation as Tessa was in. ❤️
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 10, 2025
J
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Jenna
Dallas, US
★★★★★ 4
Kind of difficult to get through for the first half but worth the read!
Format: Kindle
3.75/5 ⭐️ What this book lacked in being fully polished, it made up for in world and character building for sure! While the first half was hard to get through, as this is a book that starts you in the present and then goes back and forth between different times in the past to get you up to speed with what’s happening in the future (and it’s not all chronological in the past which made it even harder), once all of the book is set in the present, Tessa and her pack, Ryder, Dixon, Mac, and Tray, (and of course Josie the cat,) all begin their journeys of finding themselves both individually and within their pack which is so rewarding to see after all of the tragedy and sadness detailed in their last few years leading up to meeting. I think this book could’ve done with another beta reader or two to polish up grammatical errors as well, some of those took me out of the story for a minute to try to figure out what was trying to be communicated. Overall, this story filled with so many dichotomies of love and loss, grief and happiness, hurt and comfort, all culminating in a lovely story of a pack that strengthens each other after many tribulations, and it warms your heart so so much to see them go through every version of themselves, landing on secure and happy individuals who make a wonderful pack together. Would absolutely recommend if you like slow burn, rockstar, big city, and initially heavy and a bit dark but fades into comfort and fluffy omegaverse stories!
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Reviewed in the United States on April 18, 2026
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j j
New York, US
★★★★★ 3
i should have waited for there to be reviews posted
Format: Kindle
I'm being more generous than I should because this is a debut novel i downloaded this book because i like why choose and band romances i figured that it wouldn't take too long to get back to where the prologue was because the prologue seemed to be less than a day before they met the FMC and the MMCs don't meet til 60 % of the way in which for a Romance novel kinda hard for the relationship to develop or for there to be plot beyond them just meeting in a way where the FMC really lacks agency a lot of early plot and character things are forgotten about after they met it's almost as if the last third of the book was written first and then they went back to write backstory separately but forgot there needs to be a plot i get wanting to have background on the characters, but there has to be a way to do it without constant time jumps and no plot progression. Tessa's story jumps around a week lead up so much also the band aspect is very much an afterthought in the novel Spoilers-- one of the MMCs is openly pan and one of them has been dealing with a bi awakening but being somewhat defensive about it and once Tessa arrives that gets forgotten about til the epilogue and even then doesn't actually confront his sexuality the wrap up of the church hiding her name is tied up with a quick sentence, but no real consequences for anyone i honestly thought she forgot about family pack IRS deal until the final chapter and that gets resolved in an unsatisfying way the pack is upset that Tessa gets viewed as an object and tricked into the contract but has no interest in making the company's wrongdoings public or trying to prevent this from happening to other omegas tessa goes over a lot of struggles of homelessness but she only thinks about food waste once after joining the pack -- you'd think she'd use her newfound wealth and power to help other homeless individuals, especially youths and omegas. even a little side note to say that a portion of tour proceeds or her family fortune would go towards public food pantries and shelters would've done something to connect her beginning character to the end character
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Reviewed in the United States on August 3, 2025
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Shelly B
Lexington, US
★★★★★ 3
BORING and too long
Format: Kindle
I could not believe how wordy and boring this book was. No spice at all. Slow burn is really a NO burn. Almost DNF and now I’m sorry I stuck with it. 500 pages could ave been 150 and it would have been more than enough. I highly doubt not recommend this work of yuck.
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Reviewed in the United States on January 25, 2026
A
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Amanda
New York, US
★★★★★ 4
Good read
Format: Kindle
Good book but good God was there a lot of preamble when I just wanted them to meet already haha
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 11, 2025

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