Nanosheets-nanorods transformation during the non-isothermal decomposition of gadolinium acetate

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F20%3A10245527" target="_blank" >RIV/61989100:27710/20:10245527 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0272884220320162?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0272884220320162?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ceramint.2020.07.017" target="_blank" >10.1016/j.ceramint.2020.07.017</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Nanosheets-nanorods transformation during the non-isothermal decomposition of gadolinium acetate

Popis výsledku v původním jazyce

Gadolinium oxy-carbonate and oxide nanostructures have been successfully obtained via simple non-isothermal heat treatment of gadolinium acetate precursor. Nanosheets of (GdO)(2)CO3 were developed as a consequence of heating the acetate precursor over the 400-500 degrees C range and these were stripped into thin lamellar nanorods of cubic Gd2O3 when the heat treatment was applied at the 600-800 degrees C range. The analysis of N-2 adsorption isotherms revealed the microporosity of both phases and the BET calculated surface areas showed a gradual decrease with the pretreatment temperature of Gd2O3. Surface inspection using XPS indicated the presence of Gd in 3+ valence states at the surfaces of (GdO)(2)CO3 and Gd2O3. H-2-TPR results revealed the refractory nature of Gd2O3 nanoparticles against reduction. Moreover, a possible reaction of H-2 and CO2 was suggested. The electrical conductivity has been measured during the decomposition of the gadolinium precursor and for the 500-800 degrees C pre-treated samples.

Název v anglickém jazyce

Nanosheets-nanorods transformation during the non-isothermal decomposition of gadolinium acetate

Popis výsledku anglicky

Gadolinium oxy-carbonate and oxide nanostructures have been successfully obtained via simple non-isothermal heat treatment of gadolinium acetate precursor. Nanosheets of (GdO)(2)CO3 were developed as a consequence of heating the acetate precursor over the 400-500 degrees C range and these were stripped into thin lamellar nanorods of cubic Gd2O3 when the heat treatment was applied at the 600-800 degrees C range. The analysis of N-2 adsorption isotherms revealed the microporosity of both phases and the BET calculated surface areas showed a gradual decrease with the pretreatment temperature of Gd2O3. Surface inspection using XPS indicated the presence of Gd in 3+ valence states at the surfaces of (GdO)(2)CO3 and Gd2O3. H-2-TPR results revealed the refractory nature of Gd2O3 nanoparticles against reduction. Moreover, a possible reaction of H-2 and CO2 was suggested. The electrical conductivity has been measured during the decomposition of the gadolinium precursor and for the 500-800 degrees C pre-treated samples.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

21000 - Nano-technology

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Ceramics International

ISSN

0272-8842

e-ISSN

—

Svazek periodika

46

Číslo periodika v rámci svazku

16

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

25467-25477

Kód UT WoS článku

000577307800013

EID výsledku v databázi Scopus

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