Thin Layer WS2 Nano Powder
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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Tracy and Christina
San Leandro, US
★★★★★ 5
Amazing!
Format: Kindle, Format: Kindle
This book was phenomenal, I devoured it within a few days! For this being a debut novel, it is fantastic and I would’ve thought the author was a seasoned author. I have zero complaints about this book. Let me start by saying that the world building was phenomenal. I could picture everything in my head because of how detailed it was — that’s how good it was written. And I absolutely love the “captive/captor” trope so much, it’s become one of my favorite tropes, so I was pleasantly surprised to see that this book had that. I loved the banter between Rogue and Ara — they’re both snarky and witty, plus with the romantic tension, it made the dialogue that much better. Speaking of romantic tension, yes there is spice but not so much of it that it overrides the plot, which I loved. For me, this would probably be on the 3/5 level of spice. This book had a ton of plot twists and I thoroughly enjoyed it.
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Reviewed in the United States on November 13, 2024
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R Spires
Omaha, US
★★★★★ 4
High on Tropes and Satisfaction
Format: Kindle
This is a great Romantasy book full of action, adventure, and everything you look for in this genre. I won’t lie: it does kinda feel like the author found every common trope from every successful book of this kind and threw them all into this novel. But if it ain’t broke, don’t fix it. Especially in romance, there’s a large audience who has specific expectations, and they want them every time. Nothing wrong with that and many times I’m one of them. I have no idea what defines a spoiler honestly, so spoiler alert!!!!!!! Tropes include: Only one bed at the inn/bar Dissatisfaction with life before hunk appears Lost royalty The chosen one Montage of dress up time followed by shocked hunk Forbidden romance between two from rival peoples Power that cannot be controlled, simply guided/asked Gathering intel at the inn/bar FMC who knows how to fight/use weapons well There’s probably more but no need to list them all. Good story and I would recommend!
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Reviewed in the United States on June 14, 2024
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Sara Husser
Alexandria, US
★★★★★ 5
☕️The need to claim her, mark her, break her, seared through me like white fire🎨
Format: Kindle
"Some trauma stuck with you and Kaleb's had fused itself to his bones like a demented shadow. Rearing it's ugly head whenever it got hungry, feasting on whatever stability he'd managed to regain since it's last meal." "The need to claim her, mark her, break her, seared through me like white fire." "I shivered at his touch, expecting to find disgust in his stare, but finding something else instead. Wonder. And something else. A sort of recognition that could only come from someone who knew the same level of pain. Of fear for their own life." "In a moment of clarity, I realized I knew why a good guy would never be enough. Good guys didn't touch you like bad guys did. They didn't push the limits. Hold you down. Make you insane with need. Make you scream." "I figured Becca was like a bad habit. All I needed to do was resist her long enough and I'd be free. I didn't want to be free. I needed to be free." "Like he was waiting patiently for me to come to him, like he knew he didn't have to chase me anymore. Back to being my Mr. Dark and Gloomy. No. Not my. Never mine." "Let the panic consume you. Accept it or else it'll never let you go. And then remember, you are stronger than you think you are." Yes! This first book was everything. I have been very curious about Becca and her new love interests since I read The Crows series. This was packed full of action and the plot has me fully invested. The spice was spicin 🔥🔥🔥. The characters were fleshed out fully as well. This one left on a cliffhanger and I wanted to punch Aodhan. Although secretly my heart breaks for him 😂😭. This follows Becca as she moved to CA and is attending Calarts. Her father cut her off, she has no money, so she has to start over by herself. She ends up running into Hardin and Kaleb who are brothers and cousins to the Saints from the crows series. Becca, while attracted to them, hates them as she blames their father for her mother's death. Meanwhile she meets another stranger named Aodhan who wants to take her on a date. Who is this mysterious Irishman? While Hardin and Kaleb are the kings and rule the LA area, a new Irish gang is trying to take their turff. Secrets are unleashed regarding Becca's past. Lives are lost. A war is breaking out. Secret identities are in the mist. Who will survive in this duet? I always loved Becca from the other series. She has been through a lot and she's still healing from those events. You could see her growth in this first book. I love her fiery and badass self. Kaleb is a golden retriever and ray of sunshine when he's not stuck in his trauma. I love how outgoing and funny he is. His brother Hardin is the opposite. He doesn't talk. He's very angry and doesn't take crap from anyone. Aodhan is a mystery. He seems sweet and chill but also extremely broken. All of these men and Becca have heavy trauma going on. The spicy scenes between her and the brothers was so hot 🔥🔥🔥. They had insane chemistry 🥵. I'm curious how Aodhan will be added. I loved seeing cameos from the crows and Ava! I hope we get to see more of them in the next book. I love how Sloane is such a fierce badass. The women in this series are just fantastic. Damien is a strong character and I'm excited to see how that unfolds. I also love Becca's new roommates. Onto the next book!
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Reviewed in the United States on January 24, 2026
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Kindle Customer
Houston, US
★★★★★ 4
Soulless Saint
Format: Kindle
This is a spinoff featuring Becca, Hardin and Kaleb. You don't need to read the other Elena Lawson series to read this one. I didn't and I understood the plot easily. Becca is struggling to get back on her feet after her dad cuts her off. She finds a job and roommates and keeps bumping into Kaleb and Hardin. They are members of The Saints, Santa Clarita chapter. Their cousins are from the Thorn Valley chapter featured in the other series. Hardin is silent but deadly whereas Kaleb is battling demons and the world knows it. They've been asked to look after Becca, unbeknownst to her but they get too close and become obsessed with her. None of them can stay away from each other which puts Becca and danger from The Saints enemies. Can she survive more gang life violence? Becca wants to stay away but their chemistry is undeniable. This book has lots of violence and lots of passion. It's a thrill ride from beginning to end.
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Reviewed in the United States on January 29, 2023
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Irena Storm
Whiting, US
★★★★★ 5
Soulless Saint
Format: Kindle
If you're looking for a dark, thrilling romance that will keep you on the edge of your seat, "Soulless Saint" by Elena Lawson is the book for you. This first installment in the Kings of Kilborn University dseries is an irresistible mix of passion, danger, and intense chemistry. The story follows Becca, who moves to a new city to escape her past, only to find herself entangled with Kaleb and Hardin, crime lords known as the Sainted Kings. Initially tasked with protecting her, their relationship quickly evolves from animosity to an obsessive attraction that neither can resist. Becca is our fiery fmc and she is trying to rebuild her life after being cut off by her father. Kaleb and Hardin are complex and compelling—Kaleb is haunted by his own demons, while Hardin is the silent, deadly type. Their interactions with Becca are electrifying, filled with tension and undeniable chemistry. The book is packed with steamy scenes, raw violence, and unexpected twists that will leave you breathless. Just when you think you know where the story is going, Lawson throws in surprises that keep you hooked. The introduction of Aódhan, a mysterious and captivating character - needing more of him. "Soulless Saint" is a fast-paced, gripping read that you won't be able to put down. If you love dark romance with multifaceted characters and high stakes, this book is a must-read. The ending will leave you eagerly anticipating the next book.
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Reviewed in the United States on June 19, 2024

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