Recently, Mexico's National Institute of Statistics and Geography (INEGI) released data that in July 2022, Mexico's national consumer price index rose 0.74% from the previous month, while the overall annual inflation rate was 8.15%, the highest in 21 years since 2000. The prices of consumer goods and services in Mexico have increased by varying degrees, and the prices of agricultural and sideline copper oxide are still very uncertain.
What is Cu2O?
Cu2O or cuprous oxide is an oxide of univalent copper, usually in the form of brick red or reddish-brown crystals and powders. Cu2O is rich in nature, mainly in the form of chalcopyrite.
Cu2O is insoluble in water and organic solvents, but soluble in dilute hydrochloric acid, dilute sulfuric acid and ammonium chloride solution. Cuprous oxide is relatively stable at room temperature and dry conditions, and can be oxidized to CuO only after heating for a long time or in moist air.
What is Cu2O used for?
Cuprous oxide is used to make a ship bottom antifouling paint (killing low-grade marine animals). Used as fungicides, colorants for ceramics and enamels, red glass stains, and materials for making various copper salts, analytical reagents and rectifier electroplating in the electrical industry, fungicides for crops and rectifiers, etc. Cuprous oxide is also often used as a catalyst for the synthesis of organic compounds.
In recent years, Cu2O has attracted more and more attention, because Cu2O is a p-type semiconductor material with excellent properties, and has the advantages of non-toxic, easy to prepare, good chemical stability, etc. It has special optical and magnetic properties and has potential applications in the fields of photocatalysis and photoelectric conversion. The band gap is about 2.17 ev, which can absorb visible light for photocatalysis and photoelectric conversion in theory, and the highest photoelectric conversion efficiency can reach 18%.
Because of the excellent performance and promising application potential of Cu2O, researchers are committed to the preparation of Cu2O with various morphologies and structures, such as conventional films, porous films, micro-nanostructure films, nanowires and nanowires and so on.
What is CuO?
CuO or cupric oxide is a black oxide of divalent copper. Slightly bisexual and slightly hygroscopic. Copper oxide is insoluble in water and ethanol, easily soluble in acid, stable to heat, and decomposed into oxygen at high temperature.
What is CuO used for?
Copper oxide can be used as organic synthesis catalyst, analytical reagent (for nitrogen determination), oxidant, catalyst and petroleum desulfurizer, and can also be used for the determination of carbon in organic compounds.
Used as a colorant for glass, enamel and ceramic industry, anti-wrinkle agent for paint and polishing agent for optical glass. Used in the manufacture of dyes, organic catalyst carriers and copper compounds. It is also used in rayon manufacturing industry and as a desulphurizer for grease. It is used as the raw material for the manufacture of other copper salts and for the manufacture of artificial gems.
Difference Between Cu2O and CuO
Cuprous oxide Cu2O and copper oxide CuO are compounds of the chemical element copper. These oxides contain copper in different oxidized states. In addition, there is a +1 oxidation state in cuprous oxide and a +2 oxidation state in copper oxide.
The main difference between cuprous oxide and copper oxide is that cuprous oxide is crimson while copper oxide is black.
Another difference between cuprous oxide and copper oxide is that cuprous oxide naturally exists in the form of reddish minerals, chalcopyrite, while copper oxide exists in the form of mineral pyrite.
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With Russia taking the lead on Poland and Bulgaria at the end of last month, there appears to be a growing sense of compromise within the EU over whether to accept Moscow's proposed rouble settlement order.
Italy's prime minister said recently that European companies would be able to buy gas in roubles without violating sanctions. This apparently ignores the guidance of hardliners in the EU to "fight to the end".
For weeks, European companies have been trying to find ways to meet Russia's payment demands for the rouble while maintaining vital gas supplies without violating sanctions against Moscow.
Late last month, European Commission President Von der Leyen said operating under the mechanism would violate sanctions and asked European companies not to bow to Russian demands. However, the EU has yet to issue more rigorous written guidelines on how companies should pay Gazprom.
The Italian prime minister said recently, "There is no official announcement from the European Union about what ruble settlement means for sanctions violations, and no one has said whether ruble payments violate sanctions or not. It's a grey area."
"In fact, most gas importers are already opening rouble accounts for deals with Gazprom,"
He also used German companies as a shield. He said Germany's largest gas importer had already paid in rubles. "In fact, we saw evidence yesterday that the largest gas importer in Germany has already paid in rubles."
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