Syntheses of Bi₂X₃ (X = S, Se, Te) from elements under hydrothermal conditions

Peer review under responsibility of The Ceramic Society of Japan and the Korean Ceramic Society.

Abstract

Bismuth chalcogenides (Bi₂X₃, X = S, Se, Te) were synthesized from the elements under hydrothermal condition. Single phases of Bi₂S₃ and Bi₂Se₃ were produced at 240 °C. Bi₂Te₃ was obtained as an almost single phase with a small amount of Bi₂TeO₅. From the results of control experiments without water, the hydrothermal condition in the production of Bi₂S₃ was more effective than that of Bi₂Se₃. The particles of obtained Bi₂S₃ were spherical, with a diameter of ∼1 μm. The Bi₂Se₃ particles were in a plate-like form, with a width of ∼1 μm and a thickness of ∼0.2 μm.

Keywords:

• Hydrothermal reaction
• Bismuth
• Chalcogenide
• X-ray methods

Notes

Peer review under responsibility of The Ceramic Society of Japan and the Korean Ceramic Society.