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Summary of cuprous oxide (Cu2O) powder It is a red powdery solid, and it does not easily decompose in water. It is a bright red powdery solid that decomposes water very slowly. Copper oxide is a compound that is used to produce antifouling on ships’ bottoms (used to kill small marine animals), as well as insecticides. It can also be used to prepare analytical reagents or red glass.
When used and stored as per the specifications, cuprous oxide is not known to decompose. It also does not react with air or vertical surfaces. Cuprous Oxide will not form copper salts if you dilute sulfuric acids, but will substitute nitric. Soon it will turn blue. Even though cuprous oxide is stable when dry, it will slowly oxidize in the presence of air and form copper oxide. Therefore, oxygen scavengers should be used. A reducing agent can easily reduce it to metallic Copper. Cuprous oxide, which is insoluble with water, is dissolved using aqueous ammonia and concentrated hydrohalic solution.

What is the color of cuprous oxide?
By using electrolysis or furnaces, cuprous oxide can be made. It can be reduced easily to metallic copper using hydrogen, carbon dioxide, charcoal, or iron. It is used to paint glass antifouling and gives it a red tint.
Why is cuprous oxide a red color?
Red copper is simply a reduced version of the black copper (CuO) oxide. During normal oxidative fire, it will convert to copper oxide (CuO) which produces a green color in glazes and glasses. Reduction firing will keep the Cu2O structure and produce a typical red copper color.

What is cuprous oxide used for?
1. Suitable for pesticides
2. Antibacterial fibres and clothing can be used.
3. Cuprous oxide is suitable for use in agricultural fungicides.
4. Preservatives are suitable for primers on ships to prevent microorganisms.
5. Copper salts are used in the manufacturing of analytical reagents.
6. Use as a catalyst in organic synthesis.
7. Cuprous oxide, a pigment, is used in ceramics as a glaze to create shades of blue, red, and green.
8. In animal feed, it has been mistakenly added as a nutritional supplement. Copper is not readily absorbed due to low biological activity.
9. Also used in welding copper alloys

Is cuprous oxide dangerous?
It is toxic if ingested. Skin absorption by the skin may cause harm. May cause skin irritation. It may cause irritation in the eyes.
What is CuO and Cu2O difference?
Cu2O and CuO are obtained using pyrometallurgical techniques to extract copper ore. Copper is the main ingredient in many wood preservatives. Copper can also be used as a glaze pigment.

How does a cuprous oxidize form?
Generally, the order of forming an oxide phase from copper by thermal oxidation is Cu-Cu+Cu2O-Cu2O-Cu2O+CuO-CuO. Cu2O is formed at 200degC. CuO forms between 300degC-1000degC.
How to store cuprous oxid
Cuprous oxide (Cu2O) powder should be stored dry, cool, in a sealed container, and not exposed to air. A heavy pressurization should also be avoided, and the items transported as usual.

Photoelectrochemical Nitrogen Reduction to Ammonia on Copper Oxide and Cuprous Oxide Photocathodes
In ambient conditions, water can also be used as a source of hydrogen by reducing the N2 with a photoelectrochemical technique. The photoelectrochemical N 2 reduce can be significantly reduced in energy by using solar energy. The photoelectrochemical process for the reduction N2 was investigated in this study using CuO or Cu2O photocathodes. These photocathodes are notoriously poor at water-reduction reactions, but their main reaction involves competing with N2 reduction. CuO photocathodes, when tested under simulated sun with 15N2 that was isotope-labeled, produced 15NH3 at Faraday efficiencies between 17% and 22%. . These potentials have a much greater positive value than the thermodynamic potential for N2, showing how photo-excited electrons can be used in CuO and Cu2O photoscathodes to reduce the energy requirement for the production of NH3. The use of light excited electrons to reduce N2, reduce moisture, and reduce corrosive lighting was carefully studied.

Scientists use ultrafine cupsrous oxide less that 3 nanometers for visible light nitrogen fixation
Zhang Tierui and the Institute of Physics and Chemistry of Chinese Academy of Sciences’ latest research has produced ultrafine cuproous oxide (Cu2O), which is smaller than 3 micrometers and has been able to fix nitrogen using visible light. Recently, related papers were published in the German “Applied Chemistry” magazine.
The team in this study used ascorbic to perform a topological reduction on a double hydroxide layer containing divalent cupro and prepared ultrafine pellets with uniform sizes and lateral measurements less than 3 micrometers. The ultrafine cupro-nickel oxide supported on the substrate can efficiently and reliably realize the visible light-driven N2-NH3 Photocatalytic Reduction (Under 400nm wavelength photocatalysis the reaction rate is normalized according the quality of cuprous-nickel oxide as high 4.10 mmol*GCu2O-1*h-1). The high activity of this catalyst can be attributed to a number of factors, including the long lifetime photogenerated electrons trapped in the trap and the large amount of activation sites exposed. This work is a guide for the design of ultrafine ammonia catalysts or other applications.

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