SOPOUŠEK, Jiří, Dáša DRENČAKOVÁ, Pavel BROŽ, Jiří BURŠÍK, Adéla ZEMANOVÁ and Pavla ROUPCOVÁ. On thermal stability of nanocrystalline Ag–Cu-S powders. Journal of Nanoparticle Research. Springer, 2021, vol. 23, No 7, p. "138", 14 pp. ISSN 1388-0764. doi:10.1007/s11051-021-05244-y.
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Original name On thermal stability of nanocrystalline Ag–Cu-S powders
Authors SOPOUŠEK, Jiří (203 Czech Republic, guarantor, belonging to the institution), Dáša DRENČAKOVÁ (703 Slovakia, belonging to the institution), Pavel BROŽ (203 Czech Republic, belonging to the institution), Jiří BURŠÍK, Adéla ZEMANOVÁ and Pavla ROUPCOVÁ.
Edition Journal of Nanoparticle Research, Springer, 2021, 1388-0764.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10403 Physical chemistry
Country of publisher Netherlands
Confidentiality degree is not subject to a state or trade secret
WWW URL
Impact factor Impact factor: 2.533
RIV identification code RIV/00216224:14310/21:00119517
Organization unit Faculty of Science
Doi http://dx.doi.org/10.1007/s11051-021-05244-y
UT WoS 000668540800001
Keywords in English Nanoparticles; Thermoelectrics; DSC; In situ XRPD; Stromayerite; Silver wires
Tags rivok
Tags International impact, Reviewed
Changed by Changed by: Mgr. Marie Šípková, DiS., učo 437722. Changed: 6. 1. 2022 13:10.
Abstract
The nanocrystalline semiconducting compounds based on the AgCuS system are considered as low-cost candidates of thermoelectric materials with improved thermal stability. The nanocrystalline Ag–Cu—S powders were prepared from metal nitrates and sulphur powder in tetraethylene glycol (TEG) solvent by reductive agent NaBH4. The crystallite sizes of the observed phases were in the range between 60 and 80 nm. The chemical compositions of the as-received samples were analysed by the ICP-AES method and their phase compositions were evaluated by XRPD. The investigation was supplemented by DSC and in situ HTXRD thermal analysis. A more detailed in situ experiment was performed for a sample containing ternary phases. The nucleation and growth of silver micro-wires were first observed on the substrate involving ternary phases at isothermal heat treatment. The formation of silver wires and semi-conductive ternary thermoelectric phase (stromayerite τ3) is explained by observed phase transformation. The obtained results are complemented by microscopy (LM, SEM, TEM).
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GA17-12844S, research and development projectName: Tepelná a fázová stabilita pokročilých termoelektrických materiálů
Investor: Czech Science Foundation
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  • a concrete person doc. RNDr. Pavel Brož, Ph.D., učo 857
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