This article is cited in 8 papers

Semiconductors

The effect of temperature on the particle sizes and the recrystallization of silver sulfide nanopowders

S. I. Sadovnikov, A. I. Gusev

Institute of Solid State Chemistry, Urals Branch of the Russian Academy of Sciences, Ekaterinburg

Abstract: The recrystallization of silver sulfide Ag$_{2}$S nanoparticles has been studied and the range of the thermal stability of the nanoparticle sizes has been determined. Nanopowders Ag$_{2}$S with particle sizes of 45–50 nm were obtained by chemical deposition from aqueous solutions. To study the thermal stability of the Ag$_{2}$S nanoparticle sizes, the nanocrystalline powders have been annealed in a vacuum of 0.01 Pa on heating from room temperature to 493 K and in argon at 623 K. Annealing up to a temperature of 453 K leads to insignificant nanoparticle growth and annealing of microstrains, which allows one to consider this temperature range as the region of thermal stability of the silver sulfide nanostate. The temperature range from 450 to 900 K, in which the particle size increases by a factor of 3–6, corresponds to the temperature of collective recrystallization of the silver sulfide nanopowder.

Received: 05.12.2017
Revised: 06.02.2018

DOI: 10.21883/FTT.2018.07.46113.341

 English version: Physics of the Solid State, 2018, 60:7, 1308–1315

Bibliographic databases:

•