Determination of optimum condition to produce nanocrystalline pyrite by solvothermal synthesis method

In this research, FeS2 was produced by solvothermal synthesis method. For this purpose, various solvents including ethanol, 1-propanol, 2-propanol, 1-butanol and ethylenediamine were used. Results of XRD analysis showed that ethanol and 1-butanol were fairly proper to produce FeS2. In addition, the effects of raw materials, temperature and molar ratio of materials, on process performance were investigated. The produced iron disulfide was analyzed by XRD and SEM analyses. Results indicated that usage of the couple of FeSO4 and Na2S2O3 with molar ratio 1:4 in ethanol at temperature around 200 °C were the most appropriate condition for producing pyrite. Also, result of SEM analysis showed products with nanostructures.