SKU: 29694259551

Vanadium dioxide nanoparticles

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Description

Vanadium dioxide nanoparticlesProduct Name NameVanadium dioxide nanoparticles(VO2) Product Overview Vanadium dioxide is a deep blue crystal powder with a monoclinic crystal structure, which can be industrially produced by gas reduction of ammonium vanadate or vanadium pentoxide (V2O5). VO2 is a amphoteric compound that is slightly soluble in water and equally soluble in acidic or alkaline solutions; When dissolved in acidic solution, it generates divalent vanadium oxide ions

Product Name

Name:Vanadium dioxide nanoparticles(VO2)

Product Overview

 

Vanadium dioxide is a deep blue crystal powder with a monoclinic crystal structure, which can be industrially produced by gas reduction of ammonium vanadate or vanadium pentoxide (V2O5). VO2 is a amphoteric compound that is slightly soluble in water and equally soluble in acidic or alkaline solutions; When dissolved in acidic solution, it generates divalent vanadium oxide ions (VO2+), which appear light blue; When dissolved in alkaline solution, it generates vanadate salts M2V4O9 or M2V2O5. VO2 is in a metastable state, where V4+is easily oxidized to V5+, exhibiting relatively weak antioxidant capacity. VO2 is a polycrystalline metal oxide with five main structures: VO2 (M), VO2 (R), VO2 (A), VO2 (B), and VO2 (C).


Technical Parameter

Size:00-300nm

Purity:4.2%

 

Product Features

 

Phase transition characteristics: Vanadium dioxide nanoparticles can achieve a reversible transition from insulating phase to metallic phase at a specific temperature (68 ¡ãC, accompanied by significant changes in conductivity and optical properties.

High specific surface area: Nanoscale vanadium dioxide particles have a larger specific surface area, which is beneficial for increasing their surface active sites and catalytic efficiency.

Strong chemical inertness: The surface of nano vanadium dioxide has a large number of active sites, but due to the small amount of surface vacancies, its chemical inertness is very strong, and its adsorption performance for various harmful gases is excellent.

Good stability: Nano vanadium dioxide has relatively high stability, thanks to its special structure of surface ion ripples, which enables it to maintain good performance in various environments.

High catalytic activity: Nanoscale vanadium dioxide particles have significantly improved catalytic activity due to their high specific surface area, making them suitable for various catalytic reactions.


Application Fields

 

Smart windows: By utilizing the phase transition properties of vanadium dioxide nanoparticles, smart windows can be prepared. At high temperatures, windows appear metallic, blocking heat transfer; At low temperatures, windows become transparent, allowing light to pass through. This smart window can automatically adjust its transparency according to changes in ambient temperature, improving energy efficiency.

Photoelectric switch: Based on the phase transition characteristics of vanadium dioxide nanoparticles, high-speed photoelectric switches can be prepared. By controlling the temperature, switching between different phase states can be achieved, thereby regulating the transmission of photoelectric signals. This type of photoelectric switch has important applications in fields such as information processing and data storage.

Sensors: Various sensors can be prepared by utilizing the significant changes in electrical and optical properties of vanadium dioxide nanoparticles during phase transition. For example, using changes in conductivity to sense physical parameters such as temperature, humidity, and pressure; Utilizing changes in optical properties for optical sensing and spectral analysis.

Catalyst: Nano vanadium dioxide is widely used as a catalyst for various catalytic reactions due to its high catalytic activity and strong chemical inertness. For example, it can be seen in reactions such as nitration, ethane dehydrogenation, methane oxidation, and hydrogenation of formic acid.


Related Information

Please e-mail for the detailed characterization data.

E-mail:[email protected]


 

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SKU: 29694259551

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Micky
Bozeman, US
★★★★★ 5
Lasts long and helps a ton!
The bottle of shampoo has lasted me about two months (I shampoo everyday). I have scalp psoriasis in patches on my scalp and behind+on my ears and I will say this does help in breaking up the patches with scrubbing. I usually let it sit while I wash my body and then once I rinse my hair I will rub the patches behind my ears and they will just roll up and come off. It's really soothing and doesn't smell AT ALL. I don't see a complete clear up of my psoriasis but it helps in the process of keeping a clear scalp. I use a mometosone furoate cream or topical hydrocordisone on my patches when I have bad days and that plus this shampoo is as good as I've ever felt about my scalp. If you're looking for a cure, don't buy this because that's not what this is and you'll feel you've wasted your money. If you want something that will give results of ANY kind because you have run out of other options, spend the few extra dollars and try this. As a side note, this foams up great if you apply UNDER you hair instead of right on top. It's harder to spread if you put it directly to the top of your head. I've also found that it has lasted over 2 months (good for the amount you get) at about a quarter size each wash. I also only use the conditioner when I feel my hair is super dry or needs a boost as I have naturally oily hair (hence the wash every day) and have only used about half the bottle in the 2 months I've had it. I'll be sticking with this brand for now!
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Reviewed in the United States on March 12, 2018
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Natalie T-J
Alexandria, US
★★★★★ 1
CONTAINS WHEAT!!!
I’m so disgusted and disappointed. I started having issues with build-up & dandruff again, so I ordered a new bottle, remembering how well this used to work for clarifying & healing my scalp. After using it for about 6 weeks the buildup was better, but I had all these swollen, raised areas all over my scalp that were extremely itchy. I figured it was seborrheic dermatitis taking a long time to clear up. Of course, I scrubbed those areas extra well (insert face-palm here). I have an old bottle of it at my parents’ house that I used over Christmas, and I was both flake and itch free. When I came home it started up again, and I noticed my hands were also breaking out again really severely as well. I now know to suspect my personal products. Naturally I went for the non-allergy friendly brands whose ingredients change on a whim first. Nothing. Finally grabbed the shampoo, thinking that couldn’t possibly be it— and to my shock and amazement, it IS. They don’t even try to hide it with different nomenclature. I’d take a picture to show you how badly this tears up my hands, but I literally just got them calmed back down with steroid cream so the visual effect isn’t as impressive. This makes me want to stop using all of their products, which I’ve depended upon rather heavily because of my allergies & sensitivities. I’ve been using various products from Puriya for YEARS because of it being allergy friendly. I’ve even recommended their products to our patients at my natural health practice. We even considered getting a wholesale account to carry them. Now I don’t feel like I can trust ANY of their products.
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Reviewed in the United States on January 7, 2025
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Jaden Allen
Omaha, US
★★★★★ 5
4A/4B Hair with Cradles Cap Testimonial
I've had cradles cap since I was a little girl. It's these big flakes of scalp that are itchy and embarrassing and just look terrible when out of control. Plus my hair is thick so it's hard to remove. It can be caused by a mild fungal infection or hormonal imbalance. I've only tried natural remedies because other places would either offer medications or expensive prices for their products and I didn't want that at all. I tried using tea tree oil, that only made it worse because the bacteria feeds on oil, leaving my scalp okay for the first day then tight the next. I tried Head & Shoulders, Dandruff and Sulfur Shampoos but they only lasted so long and dried out my hair terribly. I figured what could I lose trying this, and I'm elated that I purchased it. The ingredients in here are perfect for me, I can't remember a time when my scalp was so clear, clean, and itch-free. No more embarrassment when going out, no more flaky scalp/skin. Paired with my silicone scalp massager, washing my hair and scalp has become a breeze and I've only used it twice! The smell is nice and did I mention that its very moisturizing for my hair, which is hard to come by in shampoos. This product is all-natural and very well made, and for it's price you're getting a great deal! Trust me you won't be disappointed.
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Reviewed in the United States on June 5, 2020
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Elleindeed19
Massapequa, US
★★★★★ 5
Amazing Cream! Like Magic for Me!
Somehow I triggered an eczema flare, and this time it hit my face. I had little bumps everywhere, my skin felt extremely dry and painful, and even under my eyebrows was sore. I’d only ever used eczema creams for my body, so I had nothing meant for my face. I searched for a facial option and this had great reviews and photos that made it look like it worked almost instantly. It arrived in one day, and I used it that night. The cream is very smooth, creamy, and incredibly soothing. By the next morning, my face was back to normal. It did sting slightly when I applied it, but only because my skin was so irritated, not because of any harsh ingredients. The relief was almost immediate. My skin felt soft, smooth, and calm again, and all the irritation cleared up like it was never there. It has a pleasant scent and is very moisturizing. Honestly, it felt like magic. This was a true lifesaver in the moment, definitely a face saver. It isn’t inexpensive but at the moment anything that worked would’ve been worth the price. I highly recommend it.
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Reviewed in the United States on February 27, 2026
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Sara V
Waukegan, US
★★★★★ 5
Love This Stuff!
I have skin allergies to anything with fragrance, so I get a lot of eczema flare ups. Not only does this not cause flare ups, but it helps soothe any irritation I have on my face. It’s also not too heavy and doesn’t leave a film feeling or cause breakouts like a lot of the other creams I’ve tried with colloidal oatmeal. Really love that they were able to work such a helpful, soothing ingredient into such a nice formula!
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Reviewed in the United States on April 28, 2026

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