The synthesis of NiS,ZnS and SrS through solid-gas reaction of sulfidizing gas mixture

In this study, the sulfidizations of NiO, ZnO, SrNO₃ and SrCO₃ were investigated by using solid-gas reactions under sulfidizing gas mixture, which contains the gas mixture of carbonyl sulfide (COS), carbon disulfide (CS₂) and sulfur (S₂).

The powder crystalline forms of nickel sulfide (NiS), zinc sulfide (ZnS) and strontium sulfide (SrS) were prepared purely by solid-gas reaction technique. The product crystalline phases were characterized by the X-Ray Diffraction (XRD) technique. XRD data of the NiS, ZnS and SrS were in good agreement with the Joint Committee for Powder Diffraction Systems (JCPDS) card numbers, 2-1280, 12-688 and 8-489 in series. The crystalline grain sizes of samples were estimated by using Debye Scherrer formula. The grain sizes of the products are in the range of nano sizes.

In light of this study, it could be proposed that the compounds, NiS, ZnS and SrS could be prepared purely through sulfidizing gas mixture by solid-gas reactions under cooling of a nitrogen atmosphere.