What is Tin Disulfide and How It Can Be Used?

Tin disulfide is an inorganic compound with the chemical formula SnS2, which is a yellow hexagonal sheet.

Tin disulfide is an n-type semiconductor material with a layered hexagonal CdI2 crystal structure and a wide band energy gap of about 2.35eV; the wider band gap gives it good optical and electrical properties, which can be used as holographic recording and electrical conversion system materials, solar cell materials and anode materials for lithium electronic batteries, etc. As tin disulfide has similar band width to silicon, safe and environmental protection, high absorption coefficient, so it is very suitable for solar cell absorber layer, in recent years has become a research hot spot for domestic and foreign experts, also can be used for imitation gold plating and pigment production.

Specification: Purity≥99%-99.9%  

Property：Yellow hexagonal flake  

CAS：1315-01-1  

Physical and chemical properties: soluble in aqua regia and hot alkali solution, insoluble in water, hydrochloric acid and nitric acid. Can be dissolved by reaction with ammonium sulfide.

Uses of tin disulfide

It can be used as holographic recording and electrical conversion system materials, solar cell materials and anode materials for lithium electronic batteries, absorber layer for solar cells, etc. It can also be used for imitation gold plating and pigment making, etc.

Tin disulfide can be used to prepare a tin disulfide catalyst for the preparation of hydrogen for fuel cells, to prepare a cobalt trioxide-tin disulfide nanocomposite, to prepare a tin disulfide nanosheet composite and to prepare a carbon nitride/tin disulfide quantum dot composite photocatalyst involving photocatalysts.

Industrially, tin flakes (or tin amalgam) are coheated with sulfur and ammonium chloride to obtain gold-yellow flake crystals (dry method), called colored gold, and hydrogen sulfide is passed into a solution of tin(IV) salt of appropriate acidity to obtain a yellow amorphous precipitate (wet method). Are insoluble in water. Soluble in aqua regia, alkali metal sulfide (to produce thiostannate), strong alkali (to produce thiostannate and hexahydroxystannate) and other solutions. The wet product is soluble in warm and medium concentration of hydrochloric acid, while the dry product is insoluble in hydrochloric acid.

Preparation of tin disulfide

Bright yellow tin disulfide precipitate can be made by passing hydrogen sulfide into the acid solution of tin tetrachloride, which can be made by the action of sulfide on tin chloride solution.