Determination of the Region of Thermal Stability of the Size and Phase Composition of Silver-Sulfide Semiconductor Nanoparticles
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The region of thermal stability of the size and phase composition of silver sulfide (Ag2S) nanoparticles is determined. Nanopowders consisting of Ag2S nanoparticles 475–50 nm in sizes are produced by chemical deposition from aqueous solutions. To analyze the thermal stability of Ag2S nanoparticles, nanocrystalline powders are annealed upon heating from room temperature to 453 K. Annealing at temperatures of up to 453 K does not induce the growth of nanoparticles, nor any change in their phase composition, which allows the conclusion that this temperature range is the range of thermal stability of the nanostate of silver sulfide.
The study was supported by the Russian Science Foundation, project no. 14-23-00025, at the Institute of Solid-State Chemistry, Ural Branch, Russian Academy of Sciences. The study was carried out with the use of equipment of the Multiple-Access Center “Composition of Materials”, Institute of High-Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences.
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