SKU: 57894899381

Co3O4 nanoparticles

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Description

Co3O4 nanoparticlesProduct Name NameCo3O4 nanoparticles Product Overview Cobalt tetroxide belongs to transition metal oxides, which are in powder form and generally appear gray black or black in color. Its molecular weight is 240. 8, density is 6. 11cm2 g, and melting point is 895 C At room temperature, cobalt trioxide material is insoluble in water. When the temperature reaches above 900 C cobalt trioxide (Co3O4) decomposes into cobalt trioxide (Co2O3) and cobalt oxide

Product Name

Name:Co3O4 nanoparticles

 

 

Product Overview

Cobalt tetroxide belongs to transition metal oxides, which are in powder form and generally appear gray black or black in color. Its molecular weight is 240.8, density is 6.11cm2/g, and melting point is 895 ¡ãC At room temperature, cobalt trioxide material is insoluble in water. When the temperature reaches above 900 ¡ãC cobalt trioxide (Co3O4) decomposes into cobalt trioxide (Co2O3) and cobalt oxide (CoO), and the final products will stabilize into CoO. Meanwhile, cobalt trioxide is also a p-type semiconductor and antiferromagnetic material with a bandgap width of 1.5 eV. Co3O4 is a spinel type oxide with a lattice parameter of approximately 0.809nm. There are three methods for preparing cobalt trioxide based on the physical state of the required cobalt source: solid-phase method, gas-phase method, and liquid-phase method.


Technical Parameter

Status:Black powder

Diameter:10-40 nm(TEM:/span>

Magnetism:Non-Magnetic

 

Product Features

 

Electrochemical catalytic activity: Nano cobalt oxide exhibits excellent performance in the field of electrochemical catalysis, with good stability and high efficiency. It can be used as a catalyst for oxygen reduction reactions and hydrogen oxidation reactions, and is used in energy conversion technologies such as water splitting and fuel cells. Magnetism: Cobalt trioxide nanoparticles have magnetism, which makes them widely applicable in fields such as magnetic materials and magnetic storage devices. Photocatalytic performance: Nano cobalt oxide also has potential in the field of photocatalysis, which can catalyze the photolysis of water to produce hydrogen using sunlight or artificial light sources, providing a new solution for solar water splitting and sustainable energy. Gas sensitivity performance: Nano cobalt trioxide is sensitive to various gases and can be used in gas sensors and gas analysis fields, such as carbon dioxide sensors and toxic gas detectors. Enzyme like properties: Studies have shown that cobalt oxide nanoparticles exhibit peroxidase like and catalase like activity, which makes them potentially valuable in fields such as biosensing, disease diagnosis, and treatment.


Application Fields

 

Electrochemical catalyst: Nano cobalt trioxide has a wide range of applications in the field of electrochemical catalysis, such as catalysts used in energy conversion technologies such as fuel cells and water splitting. Lithium ion battery: Nano cobalt oxide can be used as a positive electrode material for lithium-ion batteries, with high specific capacity and good cycling performance, suitable for fields such as electric vehicles and rechargeable devices. Gas sensitive materials: Due to their sensitivity to various gases, nano cobalt oxide can be used in gas sensors and gas analysis fields, such as monitoring air quality and detecting toxic gases. Magnetic materials: By utilizing their magnetic properties, nano cobalt oxide can be used in fields such as magnetic data storage, magnetic sensors, and magnetic fluids. Biosensing: Based on its enzyme like properties, nano cobalt trioxide can be used in the field of biosensing, such as detecting biomolecules, disease markers, etc.


Related Information

Please e-mail for the detailed characterization data.

E-mail:[email protected]

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SKU: 57894899381

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Joseph Garces
West Palm Beach, US
★★★★★ 5
Thick and soft.
What a steal. Thick, warm, soft and such high quality. This is an amazingly nice sweater.
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Reviewed in the United States on May 23, 2026
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Carlie
Pawtucket, US
★★★★★ 5
Super cute, highly recommend
Color: Beige, Size: Small
Absolutely love this sweater, I purchased a size small and it fit perfectly. It’s very soft and can be worn with a button up shirt underneath or by itself. It was true to color and was white and black. Just like the picture showed. It’s not super warm by itself, but with a shirt underneath much warmer.
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Reviewed in the United States on January 11, 2026
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ringnsing4
Phoenix, US
★★★★★ 5
Light, soft sweater
Color: Beige, Size: Small, Color: Beige, Size: Small
I liked this sweater so much, I bought it in other colors. This review is for the brown sweater, which is a warm brown color. I wear colors in the cool color palette, including cool-toned or ashy browns (see photos for comparison), but decided to keep this sweater to wear in the Fall. Color reminds me of milk chocolate. These are my go-to sweaters! Easy to pop on and wear with jeans or slacks for a put-together look. I normally wear a US Medium, but I returned for a Small. You may want to size down. Sweater is soft and comfortable, quality is great, and the weight is light and perfect for Spring or Fall. They have washed well, and I have dried in the drier for about 10 minutes before removing to finish drying on a rack.
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Reviewed in the United States on January 23, 2026
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Reeci
Lowell, US
★★★★★ 4
Love it so much!
Color: Beige, Size: Small
This is super cute! Beware the ‘beige’ color is very much a white sweater with black stripes so one star gets taken away for that. Go figure. But otherwise super cute. Cropped so beware of that but good quality!
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Reviewed in the United States on January 28, 2026
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Danielle
Pawtucket, US
★★★★★ 5
⭐️⭐️⭐️⭐️⭐️ Perfect go-anywhere sweater — stylish, versatile, and easy to layer
Color: Brown, Size: Small, Color: Brown, Size: Small
⭐️⭐️⭐️⭐️⭐️ Perfect go-anywhere sweater — stylish, versatile, and easy to layer I bought this striped sweater for a fall cruise from Spain to Portugal and then on to France, and it was absolutely perfect for the changing weather. Some days were warm, others were cool, and this sweater handled it all beautifully. It’s lightweight without feeling flimsy, making it ideal for layering without adding bulk. I wore it often throughout the trip and never felt like I was repeating the same outfit—it’s classic, flattering, and effortlessly stylish. The stripes and color palette are incredibly versatile. It paired easily with black, brown, and neutral pieces, dressed up or down, and worked for everything from sightseeing to casual dinners. Comfortable, chic, and practical—this truly is a go-anywhere sweater. If you’re looking for something cute, fashionable, and endlessly wearable, this sweater is a winner. I’d absolutely buy it again.
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Reviewed in the United States on December 17, 2025

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