Metal sulfide preparation from a sol–gel product and sulfur

Abstract

Synthesis of metal sulfides has been demonstrated by the example of monoclinic germanium disulfide produced by reaction of the sol–gel product with sulfur. The elemental sulfur, in turn, was obtained as the result of oxidation of H₂S in the presence of concentrated sulfuric acid. This sulfur was transported into a toluene solution of germanium ethoxide and found to be homogeneously distributed within the gel. Heat treatment of the sol–gel product yielded single-phase GeS₂ . Products before and after heat treatment were characterized by IR, XRD, SEM and EDXA measurements.

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