Difference between copper ion and copper oxide in mask. In different forms, copper oxide is an inorganic substance with chemical formula CuO, which is a black oxide of copper, slightly amphoteric and slightly hygroscopic. [1] insoluble in water and ethanol, soluble in acid, stable to heat, and decomposed into oxygen at high temperature. [1] Copper oxide is mainly used to make rayon, ceramics, glazed porcelain, batteries, petroleum desulfurizers, pesticides and so on. It is also used in hydrogen production, catalyst, green glass and so on. Copper ion is obtained by losing the outermost two electrons of the copper atom, and it has a positive valence, which is recorded as Cu, and is usually blue. In aqueous solution, copper ion Cu is actually hydrated ion [Cu(H? o)？ ], hydrated copper ions are blue. Copper oxide mask is reliable
As a safe and efficient antibacterial component, nano-copper ions form a series of product matrices with large specific surface area and superior adsorption and antibacterial ability. Copper ion is an essential element for human body, which is safe and harmless to human body. It can achieve broad-spectrum antibacterial effect by interfering with protein in bacteria, and also has good inhibitory effect on many fungi containing protein capsid. Moreover, the copper oxide mask can kill coronavirus, which has been tested by many testing institutions and proved to be effective.