Mechanochemical synthesis of eucairite CuAgSe and investigation of physicochemical and transport properties.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F25%3A39922911" target="_blank" >RIV/00216275:25310/25:39922911 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1039/d4mr00111g" target="_blank" >https://doi.org/10.1039/d4mr00111g</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d4mr00111g" target="_blank" >10.1039/d4mr00111g</a>

Result language

angličtina

Original language name

Mechanochemical synthesis of eucairite CuAgSe and investigation of physicochemical and transport properties.

Original language description

Copper silver selenide, CuAgSe, was easily and conveniently prepared from Cu, Ag and Se powders in a stoichiometric ratio by one-step solvent-free mechanochemical synthesis after 7 min of milling in a planetary ball mill. The kinetics of the synthesis, along with the structure, morphology, thermal stability, physicochemical, and thermoelectric properties of the product were investigated. The crystal structure, physicochemical properties, and morphology were characterised by X-ray diffraction, particle size distribution analysis, specific surface area measurements, X-ray photoelectron spectroscopy, and scanning and transmission electron microscopy. XRD confirmed the crystal structure as a mixture of tetragonal and orthorhombic CuAgSe. Analysis of surface composition revealed partial surface oxidation. Electron microscopy revealed that the nanostructured product consisted of agglomerated particles of irregular shape which formed clusters with a size &gt;20 mu m while the mean size of crystallites was 12.1 nm. The mixed crystal structure was also confirmed by selected area diffraction. Thermal analysis clearly indicated a reversible phase transformation. The spark plasma sintering method was applied to prepare a dense CuAgSe pellet for thermoelectric characterization. High-temperature transport properties were examined to assess the potential application of mechanochemically synthesized synthetic eucairite in energy conversion.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20504 - Ceramics

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

RSC Mechanochemistry

ISSN

—

e-ISSN

2976-8683

Volume of the periodical

2

Issue of the periodical within the volume

2

Country of publishing house

GB - UNITED KINGDOM

Number of pages

10

Pages from-to

246-255

UT code for WoS article

001553892300001

EID of the result in the Scopus database

2-s2.0-105013991644