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The chemical formula is ZnS. It is usually a powdery white or off-white color. Zinc Sulfide turns darker when exposed to sunlight.
Zinc Sulfide – A property of the metal:
Zinc Sulfide is stable when in dry air. When in humid air over a period of time or in air that contains moisture, the zinc sulfide will gradually oxidize into zinc sulfate. Zinc Sulfide is insoluble in water but soluble when mixed with dilute inorganic acids.
Zinc sulfide, or zinc sulfide, is usually obtained through the reaction of hydrogen sulfide with zinc salt solutions. When a small quantity of Cu,Mn,Ag is added to ZnS crystalline, it will emit different colors after illumination. Zinc Sulfide has many uses, including as an analytical reagent for paints, opaque and white glass, rubber filling, plastic and phosphor.
Zinc Sulfide Application:
The zinc sulfide compound semiconductors are gaining attention for their excellent physical properties such as a wide band gap and high refractive indices. They also have a high light transmittance range in visible light.
Zinc Sulfide exhibits excellent electroluminescence and fluorescence effects. Nano-zinc has a unique effect. It has excellent properties in the areas of magnetism, electricity, optics and mechanics. It is for this reason that research into nano-zincsulfide was a success. In 1994, Bhargava published a report stating that surface passivation nano-ZnS phosphors had an external quantum efficiencies of up to 18% when heated at high temperatures. They also had shortened fluorescence lives by 5 orders and also emitted light. ZnS has a much improved performance that opens up new applications for it.
Zinc sulfide may be used for making white pigments and glasses, luminous dust, rubber, paint, plastics etc.
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