SKU: 43341399876

NiAl-LDH Two-dimensional layered bimetallic hydroxides

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NiAl-LDH Two-dimensional layered bimetallic hydroxidesProduct Name Name: NiAl LDH Two dimensional layered bimetallic hydroxides Product Overview Layered double hydroxides (LDHs) are 2D hydrotalcite materials consisting of a positively charged main layer and exchangeable interlayer anions. Generally, it can be expressed as [M2+1 xM3+x(OH)2]x+[(An )x n]x mH2O (M2+ and M3+ are bivalent Ni2+, Co2+, Fe2+ and trivalent metal ions Al3+, V3+ and Cr3+, respectively, and An is an interlayer anion (carbonate and

Product Name

Name: NiAl-LDH Two-dimensional layered bimetallic hydroxides


Product Overview

Layered double hydroxides (LDHs) are 2D hydrotalcite materials consisting of a positively charged main layer and exchangeable interlayer anions. Generally, it can be expressed as [M2+1-xM3+x(OH)2]x+[(An-)x/n]x-·mH2O (M2+ and M3+ are bivalent Ni2+, Co2+, Fe2+ and trivalent metal ions Al3+, V3+ and Cr3+, respectively, and An- is an interlayer anion (carbonate and nitrate). x is the molar ratio of M3+/(M2++M3+). For the preparation of LDHs, the main preparation methods include chemical precipitation, hydrothermal method, solvothermal method and so on. 1. The chemical precipitation method uses homogeneous chemical precursors as the substrate material, in which two or more metal ions are intricately mixed together and produce synergies to form the desired material. The main preparation process is to dissolve the bivalent and trivalent metal nitrate chemicals in deionized water with a certain molar ratio, and stir for a period of time at the appropriate temperature (generally 60 ° C), and then add the NaOH solution drop by drop and maintain the pH of the solution at about 10 ~ 11, stir for a period of time, and place it at the appropriate temperature after aging. 2. Hydrothermal method is usually used to enhance the crystallinity of layered double hydroxides. Hydrothermal method can obtain well-crystallized and evenly layered double hydroxides. The main preparation process is to mix the bivalent and trivalent metal nitrate chemicals and urea in aqueous solution to form a homogeneous solution in a certain ratio, and then add it to the reaction kettle for the corresponding time to prepare. 3. Solvothermal method is a simple and environmentally friendly method. Similar to the hydrothermal method, the difference is that hydrothermal is to mix two metals in an aqueous solution to form a homogeneous solution, while solvothermal is to mix two metals in an organic solution to form a homogeneous solution, and then put it into the reactor at a higher temperature reaction preparation.


Technical Parameter

 

Status:Green powder

Diameter:0-40 nm

Product Features

 

Adjustability: Suitable metal ions can be selected according to the needs of the catalyst for type or quantity modulation, so as to obtain different functions of LDHs.

Structural memory effect: LDHs can be converted into relatively stable bimetallic oxide LDOs under high temperature roasting conditions, which has good thermal stability and multi-layer pore structure, and has been widely used in the field of electrochemistry.

Strippable layer and assembly: The interaction force between LDHs laminates is relatively weak, and it is easy to be destroyed by external forces, and it is stripped into a single-layer nanosheet structure.

 

Application Fields

 

 

Electrolytic water oxygen/hydrogen evolution reaction: LDHs containing transition metal ions Fe, Co, Ni, Mn, etc., is a good OER catalyst. For example, NiFe LDHs is one of the catalysts with the best OER properties, and is also considered to be a promising non-precious metal based OER electrocatalyst. LDHs can effectively adsorb hydroxyl species, such as CoNi-LDHs has good HER activity under alkaline conditions, and its activity is much higher than Ni(OH)2 and Co(OH)2.

Biomedical field: Good biocompatibility, low toxicity, lamellae structure can accommodate biomolecules, such as the use of CoMn-LDH nanosheets loaded with photosensitizer Ce6 for photodynamic/chemokinetic synergistic therapy to inhibit tumor growth.

Ion adsorption: Due to the special layered structure of LDHs and the strong ion exchange characteristics of interlayer anions, LDHs materials are usually used for the adsorption of heavy metal ions in sewage, such as selenium (VI), arsenic (III, V) and so on.

Supercapacitors: Layered metal hydroxide is a typical Faraday pseudocapacitor material, which has a high theoretical specific capacitance and is a promising electrode material for supercapacitors. LDHs has a large specific surface area, more active sites and a short diffusion distance, which facilitates the rapid migration of ions between the nanosheet surface and the electrolyte, thus significantly improving the Coulomb efficiency of the device.


Related Information

Please e-mail for the detailed characterization data.

E-mail:[email protected]

 

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Asia
Houston, US
★★★★★ 5
Absolutely amazing! Must try.
I absolutely love this sponge!, it is so dense; it uses such a small amount of makeup but applies like a full coverage. I am using much less of my mineral makeup powder thanks to this sponge; plus it is easy to wash and dries quickly. Totally worth a try!
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Reviewed in the United States on March 11, 2024
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35 F glitter loving unicorn
Whiting, US
★★★★★ 4
*update* Maybe(?) Perfect for those who hate eggs
Edit: Update It is with a heavy heart Im updating this review. When I said this sponge stains, I mean it really stains. Now to be fair it is marketed as a powder sponge and I use it with liquid so this my be entirely on the user (aka me) but it's like I can never get it clean. Between my repeated washing and the overall product build up the performance of this sponge went downhill quickly. The finish of my makeup suffered and the flocking took a beating. For what it's worth the sponge has not fallen apart and is still in one piece. But I get more of a 4 star finish than a 5 star finish. I've ended up using a large fluffy brush to buff out my foundation to get the desired result. I also ended up repurchasing the flocked flat ended egg from RT to replace this although at the moment I am still stubbornly using this sponge (and also avoiding doing my makeup) I do believe a lot of my issues are do to using this sponge with liquid foundation instead of power and that is on me. I'm finding it so very difficult to clean and the RT flocked egg cleans up so much easier. I don't hate this sponge but my lovefest has definitely taken a turn to more of a likefest. I am going to keep using (because I am stubborn like that) and see how long it takes to turn this relationship into a hatefest or fall apart completely, whichever happens first. I will most likely update again at that time. At this moment I am changing my review from 5 star to 4 star. I will be keeping my original review below. *original review* Yo I LOVE this thing. Ok here's the deal, I don't like the beauty blender, in fact I kinda hate it. Yea, I said it, I'm not on board with bouncing an egg all over my face, I think it's tedious and inefficient. I had at one time a flat teardrop shaped sponge that was my hands down favorite application tool for foundation. I used that thing until it literally fell apart. I tried to find a replacement but the store I had originally gotten it from no longer carried it so I kept using that ratty old sponge until it was missing chunks. I tried some other flat sponges but none worked as I wanted so I went back to brushes but I really hate cleaning foundation from brushes so I was pretty much hating my life. Then I found a flocked egg. Now I'm not a fan of the eggs but I was intrigued by the flocked texture and it had a nice flat edge so I tried it and it was almost as good as my old dearly missed flat teardrop sponge. I still was not a fan of bouncing an egg around on my face but I used this until the flocking wore off (about 6 months) Well, I saw this listing for a flat flocked sponge and I pounced on it. I am so incredibly deliriously happy with this little sponge. I love that it's flat and not an egg. I love the flocking. I love how it fits in my hand. I love love the finish I get with my foundation. I love it. Like I need to order a dozen more so I never run out and I'm trying to break my hoarding tendencies but for this tool I want to hoard. So the bad... It does stain easily. I wet my sponge before use and give it a quick clean after use. My old flocked egg would clean right up but this has stained on the first use. I also don't know how long this will hold up so I hope to update at a later time about that. Overall I couldn't be happier with this sponge.
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Reviewed in the United States on February 10, 2021
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Kristyne
Lowell, US
★★★★★ 5
Perfect for liquid
This sponge is not made for liquid but I use it for my liquid foundation. The sponge won't last as long when it gets wet but it still lasts a LONG time! I put a drop of water on sponge first then dab a few times on my arm to dry with only a slight hint of moisture left (very dry feeling)... then add a drop of makeup (literally). The coverage is awesome and your makeup last 2 to 3x as long. Flawless finish. Love it! I recently updated my review...I still have same awesome sponge. Now I also mix a silicone air brush liquid (clear) to the liquid makeup it spreads farther and the finish is wonderful. Great product stays dry and drys very quick after use.
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Reviewed in the United States on January 19, 2014
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Doris
Cuba, US
★★★★★ 5
Love this product!
I’ve used this product for a long time. It’s nice and soft and works well on my skin. I wouldn’t use anything else.
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Reviewed in the United States on July 29, 2024
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kjm27434
New York, US
★★★★★ 3
Its OK, but not nearly as easy to use as videos and reviews make it seem.
I ordered this flocked sponge based on reviews and on watching JI videos of applying pure pressed powder with it. I tried it 'damp' and it was awful mess! I tried it dry, and no powder was transferring to my face at all. I'll stick with my ELF blurring brush to apply JI pressed foundation (which I love).
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Reviewed in the United States on October 12, 2018

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