Zinc sulfide (ZnS) is an important inorganic compound consisting of the elements zinc (Zn) and sulfur (S). It is a white or yellow powder, depending on its purity and crystalline form. Zinc sulfide has the molecular formula ZnS, a molecular weight of 97.44 g/mol and a density of about 4.03 g/cm³. Zinc sulfide is available in a variety of crystal forms, the two most common of which are the cubic crystal system (sphalerite type) and the hexagonal crystal system (feldspar type).
Zinc Sulfide
Application of Zinc Sulfide
Zinc sulfide (ZnS) is a versatile inorganic compound with a wide range of applications in several fields due to its unique physical and chemical properties. As a phosphor, ZnS is widely used in fluorescent lamps, displays and glow-in-the-dark paints to provide stable luminescent performance; in medical imaging and industrial testing, ZnS phosphor screens are used to detect X-rays and γ-rays. As a semiconductor material, zinc sulfide is used to make photodiodes, solar cells and light sensors to improve light energy conversion and detection efficiency. In optical coatings, zinc sulfide is used as anti-reflective coatings and transparent conductive layers to reduce reflection losses and increase light transmission. Zinc sulfide also has good catalytic properties and is used in petroleum refining and organic synthesis reactions to improve fuel quality and yield. In medicine and biotechnology, zinc sulfide nanoparticles are used as drug carriers, fluorescent labeling materials and antimicrobial coatings to improve drug targeting and antimicrobial effects. In addition, zinc sulfide is widely used in paints and plastics as a white or yellow pigment to improve hiding power and weathering resistance. In environmental protection, zinc sulfide is used as an adsorbent to remove heavy metal ions and organic pollutants from wastewater and as an air purification material to adsorb and degrade harmful substances in the air. In conclusion, zinc sulfide has a wide range of applications in many fields, such as fluorescent materials, semiconductors, optical coatings, catalysts, medicine, paints and environmental protection due to its diverse physical and chemical properties.
Zinc Sulfide is insoluble in water.
Zinc sulfide (ZnS) is an important inorganic compound widely used in phosphors, semiconductor materials, optical coatings and catalysts. It is a white or yellow powder, depending on its purity and crystalline form. Zinc sulfide consists of zinc ions (Zn²⁺) and sulfur ions (S²-), has a molecular weight of 97.44 g/mol and a density of about 4.03 g/cm³. The two most common crystal types of zinc sulfide are the cubic crystal system (sphalerite type) and the hexagonal crystal system (fibrillar zincite type). However, the solubility of zinc sulfide in water is extremely low; according to the Handbook of Chemistry, its solubility is only 0.013 g/L at 25°C, which can be considered almost insoluble in water. This characteristic makes zinc sulfide in an aqueous solution usually exist in the form of solid particles, which are not easily dispersed or dissolved.
Zinc Sulfide
The low solubility of zinc sulfide in water is mainly attributed to its strong ionic bonding, low solvation energy and high lattice energy. Strong ionic bonds are formed between the zinc and sulfur ions in zinc sulfide, and this bonding energy makes the zinc sulfide molecule less likely to dissociate into free ions in water. At the same time, the interaction energy between the water molecules and the zinc sulfide ions is low and is not sufficient to overcome the ionic bonding energy within the zinc sulfide crystals. In addition, the high lattice energy of zinc sulfide crystals requires a large amount of energy to dissociate the crystals into individual ions, and the energy provided by water is far from sufficient to meet this requirement. Although zinc sulfide is virtually insoluble in pure water, its solubility increases significantly under acidic conditions. Hydrogen ions (H⁺) can react with zinc sulfide to form a soluble zinc salt and hydrogen sulfide gas (ZnS + 2H⁺ → Zn²⁺ + H₂S). An increase in temperature has little effect on the solubility of zinc sulfide, but trace amounts of impurities or specific solvents can enhance its dispersion in water. The low solubility properties of zinc sulfide in water are important in many applications. As a phosphor, zinc sulfide is widely used in fluorescent lamps and displays, where its insolubility in water ensures that it will not decompose or fail due to moisture during use. As a semiconductor material, zinc sulfide is used in the manufacture of photodiodes and solar cells, where its water-insoluble properties help to maintain the stability and performance of the material. In optical coatings, zinc sulfide is used as a transparent conductive layer, and its water-insoluble nature makes it suitable for use in a variety of environments, including wet conditions. Understanding the solubility properties of zinc sulfide is therefore important to optimize its use in different applications. Supplier of titanium nitride powder: TRUNNANO is a globally recognized manufacturer and supplier of compounds with more than 12 years of expertise in the highest quality nanomaterials and other chemicals. The company develops a variety of powder materials and chemicals. Provide OEM service. If you need high quality Zinc Sulfide Powder, please feel free to contact us. You can click on the product to contact us.([email protected]) Tags:zinc sulphur,zinc and sulfur,zinc sulfur
