Organic-Medium Synthesis of Cd3Sb2S8 and Its Thermogravimetric Analysis (TGA)

In this study, the Cd₃Sb₂S₈ semiconductor compound was synthesized in a non-aqueous medium using antimony ore obtained from the Daridag deposit in the Julfa district of the Nakhchivan Autonomous Republic. The raw ore was initially enriched by flotation and subsequently converted into Sb₂S₃, Sb₂S₅, and Na₃SbS₄ precursor compounds through successive chemical transformations. The final Cd₃Sb₂S₈ phase was prepared by a solvothermal process in ethylene glycol at 150 °C, achieving an approximate product yield of 90%. A possible reaction pathway describing the formation of Cd₃Sb₂S₈ was proposed, and the sequential nucleation and crystal growth processes were discussed. The thermal behavior of the synthesized material was evaluated by thermogravimetric (TG) analysis, which demonstrated high thermal stability with a total mass loss of only 14.34% up to approximately 900 K. The obtained results indicate that the synthesized Cd₃Sb₂S₈ is a thermally stable semiconductor material with potential for further investigation in advanced functional applications.

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