Crystallographic study of nanostructured thermoelectrics based on Ag-Cu-S ternary system
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F19%3A00107462" target="_blank" >RIV/00216224:14310/19:00107462 - isvavai.cz</a>
Výsledek na webu
<a href="https://emnmeeting.org/2019-nanoparticles/" target="_blank" >https://emnmeeting.org/2019-nanoparticles/</a>
DOI - Digital Object Identifier
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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Crystallographic study of nanostructured thermoelectrics based on Ag-Cu-S ternary system
Popis výsledku v původním jazyce
The nanostructured compounds based on AgCuS system are considered as low-cost candidates of thermoelectric materials with improved thermal stability. The AgCuS nano powder (NP) was prepared from silver nitrate, copper nitrate and sulfur powder in tetraethyleneglycol (TEG) solvent by reductive agent (NaBH4). The particle sizes of the AgCuS samples were characterized by dynamic light scattering (DLS) method. The average hydrodynamic sizes of the nanoparticle samples were between 200 and 800 nm. The samples were investigated also by scanning electron microscopy (SEM) and other methods. The Au, Ni and S contents were analyzed by inductively-coupled plasma atomic emission spectroscopy (ICP-OES). The difference between the mass of the dry sample after purification and the weight sum of the analyzed species was presumed to be the mass of surface anchored organic matter. The compositions of the samples are given. The powder X-ray diffraction (XRD) was used for phase identification of samples. The coexisting phases identified in the nanostructured AgCuS powders in a state as prepared by synthesis are given. The phases that can be found in equilibrium bulk AgCuS phase diagram were accepted from literature. The disagreement between nanostructured and equilibrated samples can be find. The role of the particle size of the samples is discussed.
Název v anglickém jazyce
Crystallographic study of nanostructured thermoelectrics based on Ag-Cu-S ternary system
Popis výsledku anglicky
The nanostructured compounds based on AgCuS system are considered as low-cost candidates of thermoelectric materials with improved thermal stability. The AgCuS nano powder (NP) was prepared from silver nitrate, copper nitrate and sulfur powder in tetraethyleneglycol (TEG) solvent by reductive agent (NaBH4). The particle sizes of the AgCuS samples were characterized by dynamic light scattering (DLS) method. The average hydrodynamic sizes of the nanoparticle samples were between 200 and 800 nm. The samples were investigated also by scanning electron microscopy (SEM) and other methods. The Au, Ni and S contents were analyzed by inductively-coupled plasma atomic emission spectroscopy (ICP-OES). The difference between the mass of the dry sample after purification and the weight sum of the analyzed species was presumed to be the mass of surface anchored organic matter. The compositions of the samples are given. The powder X-ray diffraction (XRD) was used for phase identification of samples. The coexisting phases identified in the nanostructured AgCuS powders in a state as prepared by synthesis are given. The phases that can be found in equilibrium bulk AgCuS phase diagram were accepted from literature. The disagreement between nanostructured and equilibrated samples can be find. The role of the particle size of the samples is discussed.
Klasifikace
Druh
O - Ostatní výsledky
CEP obor
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OECD FORD obor
10403 - Physical chemistry
Návaznosti výsledku
Projekt
<a href="/cs/project/GA17-12844S" target="_blank" >GA17-12844S: Tepelná a fázová stabilita pokročilých termoelektrických materiálů</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2019
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů