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Its chemical formula is ZnS. Its molecular weight, 134.72. It is created by interacting through ionic interactions with zinc ions, (Zn2+), and sulfur ions, (S2-). The sulfur ions form a tetrahedron with four zinc ions at its center. The sulfur ion occupies the center of the tetrahedron. This structure can also be described as a face centered cubic crystal system where zinc and sulfur ions occupy respective vertex and face centered positions in the lattice.
Zinc Sulfide (also known as Zinc Sulfide) is an insoluble, white solid. It is not soluble with water but it is soluble with bases and acids. Zinc sulfide's density is 3.98 g/cc, with a melting point of 1350 degrees C. and a boiling point of 1650 degrees C. It is also transparent and has good optical properties. The light transmission is between 200 and 400nm. Zinc sulfide has relatively stable properties, but under certain circumstances it can react. Zinc sulfide is oxidized, for instance, when it comes into contact with an oxidizing substance. In an environment that is alkaline, zinc sulfide will react with hydroxide molecules to produce zinc hydroxide.
Application Of Zinc Sulfide
Zinc sulfide, also known as zinc sulfur, is a significant compound. The unique structure of its crystal and its chemical and physi-cal properties have made it a widely used material in many fields. We will discuss the various applications of zinc sulfide.
1. Manufacturers of phosphor
Zinc Sulfide has many uses, including in fluorescent screens. Zinc sulfide, used in the manufacture of fluorescent screens, can be made into phosphors which, upon being excited by external lights, emit different colors. In the manufacture of fluorescent lamps, zinc-sulfide also makes phosphors which emit visible light upon being excited by ultraviolet radiation.
2. Manufacturing of photoelectric conversion materials
Zinc Sulfide, a material used for photoelectric conversion, can also be used in the manufacture of solar cells. In solar cells zinc sulfide converts light energy into electrical power. The photoelectric efficiency of zinc sulfide, combined with its low cost, makes it a material that has wide applications.
3. Drug Manufacturing
Zinc Sulfide, because of its biological activity, has many applications in pharmaceutical production. Zinc sulfide is used in the manufacture of anti-malarials, including zincsulfate as well as zinc acetate. The zinc sulfide used can be used for the production of preservatives and fungicides.
4. Catalyst Manufacturing
Zinc sulfur acts as a catalyst for the creation of other compounds like zinc acetates, acetones, and methylisobutylketone. Zinc sulfur is a highly active and selective catalyst in manufacturing.
5. Optical device manufacturing
Due to its high transparency, zinc sulfur is used widely in optical devices. Zinc sulfide is used, for instance, in optical fiber communication to produce optical fiber preforms. Additionally, zinc sulfide may be used to make optical devices like optical Windows and lenses.
Method of Production of Zinc Sulfide
1. Method of chemical precipitation
The chemical precipitation method is the most common way to prepare zinc sulfide. The zinc sulfide was obtained by mixing zinc salt with sulfur salt in solution.
Preparation Solution: Dissolve a suitable amount of zinc salt and sulfur salt into water to create a solution.
Precipitation reaction : the above solution is heated in stirring conditions and an appropriate amount precipitating agent is then added to precipitate both zinc ions (and sulfur ions) to generate zinc-sulfide precipitation.
Filtration : The reaction is filtered in order to obtain a filtrate that contains zinc-sulfide precipitation.
Cleaning: The filtered precipitation of zinc sulfide is cleaned with alcohol in order to remove impurities.
Drying: After washing the zinc sulfide it is precipitated then dried to get zinc sulfide.
Chemical precipitation is easy to do, inexpensive, and produces a product of high purity. The disadvantages of this method are that it requires many detergents and precipitating agents. Also, the waste liquid generated must be further processed before being discharged, which can cause environmental pollution.
2. Synthesis of solid phases at high temperatures
Traditional methods for the preparation of zinc sulfide include high-temperature solid phase reactions. A solid reaction of sulfur oxides and zinc at high temperature produced zinc sulfide.
Ingredients: To make raw materials, the appropriate amount of carbon powder, zinc oxide powder, and sulfur dioxide powder is mixed.
Pretreatment - The raw materials undergo a pretreatment at high temperature to ensure that all components react and generate zinc and sulfide vapor.
Synthesis: Zinc and sulfur vapors are produced at high temperatures.
Collection: The powdered zinc sulfide is collected and processed accordingly.
The high-temperature, solid-phase synthesis is characterized by high purity, excellent crystallinity, as well as a relatively straightforward process. The method does require high temperatures, and it uses a lot of carbon and sulfur powders, which can be harmful to the environment.
3. Soluthermal method
The solvothermal process is a method that has been developed to prepare zinc sulfide. The method is to dissolve zinc salts and sulfur salts in organic solvents under high pressure and temperature. This produces zinc sulfide by hydrothermal reaction.
Solution preparation: Dissolve the required amount of zinc salt and sulfur in the organic solvent.
High temperature and pressure reaction: The above-mentioned solution is placed in the high-temperature reactor and under high-pressure conditions, a hydrothermal process is performed to produce zinc-sulfide.
The zinc sulfide generated is collected and treated.
The solvothermal technique has the advantage of a high purity product, good crystallinity and a relatively straightforward process. The method is also capable of using different organic solvants and reaction conditions in order to regulate product properties. The method is not without its limitations. It requires high-temperature, pressure equipment. And the recovery and disposal process of organic solvents are expensive and require certain technology.
It is important to consider the advantages and limitations of different methods of production of zinc sulfide, and to select the appropriate methods according to actual conditions and needs. During the production, it is important to take into account environmental and safety issues and implement appropriate technologies and measures for environmental protection.
Prospect Market of Zinc Sulfide
1. phosphor market prospects
Zinc sulfur is widely used to manufacture phosphor. Phosphor can absorb light while emitting different colors. It is used widely in the display, lighting, photovoltaic, and other fields. Luminous materials are being used in more and more fields, including solar cells and biomedicine. Zinc sulfide has become an important material for phosphors, and the market is growing.
2. Photoelectric conversion materials: market outlook
Zinc sulfur is also widely used for the production of photoelectric materials. Solar cells, the most popular application of photoelectric materials, can convert light into electricity. The demand for solar panels is increasing as renewable energy becomes more important. The cost of photoelectric converter materials has also been steadily decreasing, as technology continues to improve.
3. Market prospects for drug manufacturing
Zinc Sulfide has also been used in pharmaceutical production. The pharmaceutical industry is a massive market. As people become more health-conscious, the demand for drugs increases. Zinc Sulfide can be used for antimalarial drug production and has a biological activity.
4. Prospects for the manufacturing of catalysts
Zinc sulfur is used for some catalyst production. Catalysts are substances that accelerate chemical reaction and have a variety of applications, including in the fields of environmental protection, pharmaceutics, and chemical. As technology continues to develop, so do the demands for catalytic performance and selectivity. This provides more opportunities for using zinc sulfide as a catalyst.
5. The optical device market is expected to grow at a rapid rate.
Zinc sulfur is also widely employed in the manufacture of optical devices. The optical device has multiple applications, including communication, imaging and optical storage. It can modulate and transmit the light. As technology continues to develop, performance requirements for optical products are increasing. This provides more opportunities to apply zinc sulfide when manufacturing optical devices.
Zinc Sulfide Price :
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