Synthesis of SbSBr and SbSI_1-xBr_x in water solution

Abstract

The possibility to synthesize SbSBr and SbSI_1-xBr_x in a dilute hydrochloric acid solution was shown. Conversely to the SbSI, synthesis of SbSBr and SbSI_1-xBr_x in this solution requires an excess of bromide-anions, higher temperature and prolonged duration of chemical reaction. The final products were characterized by X-ray diffraction, X-ray fluorescence, energy-dispersive X-ray spectroscopy, scanning electron microscopy and iodometric titration measurements. The real content of bromide in the resulting SbSI_1-xBr_x phases is less than the bromide amount calculated according to the reaction equation due to the lower π-acceptor properties of bromide as compared with iodide.

Keywords:

• Antimony sulphoiodide
• antimony sulphobromide
• X-ray methods
• piezoelectric properties
• chemical preparation of powders

Acknowledgments

The authors express gratitude towards Dr. U.V. Popov for microprobe analysis.

The authors wish to express sincere thanks to Dr. B. S. Medvedev and Dr. V.B. Nalbandyan for the help in the process of writing this work.

The work was conducted in the framework of Project Part of the State Assignment for Research No. 4.2592.2014/K.