Structure-Property Correlation in Sodium Borophosphate Glasses Modified with Niobium Oxide

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F22%3A39919188" target="_blank" >RIV/00216275:25310/22:39919188 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.mdpi.com/2079-6412/12/11/1626" target="_blank" >https://www.mdpi.com/2079-6412/12/11/1626</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/coatings12111626" target="_blank" >10.3390/coatings12111626</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Structure-Property Correlation in Sodium Borophosphate Glasses Modified with Niobium Oxide

Popis výsledku v původním jazyce

Bulk glasses of the series (100-x)[0.4Na(2)O-0.2Nb(2)O(5)-0.4P(2)O(5)]-xB(2)O(3) with x = 0-48 mol% B2O3 were prepared by slow cooling in air. Their glass transition temperature increases within the range of 0-16 mol% B2O3, but further additions of B2O3 result in its decrease. Their structure was investigated by Raman, B-11, and P-31 MAS NMR spectroscopy. The relative number of BO4 units decreases with increasing B2O3 content, while the number of BO3 units increases up to 59 % at x = 48. The upfield shift of a broad resonance peak in the P-31 MAS NMR spectra is ascribed to an increasing connectedness of the structural network with increasing B2O3 content. Strong Raman band at 916-929 cm(-1) shows on the presence of NbO6 octahedra in the structural network of these glasses. With the B2O3 addition, a decrease in DC conductivity is observed, which is attributed to the decrease in the concentration of Na+ ions.

Název v anglickém jazyce

Structure-Property Correlation in Sodium Borophosphate Glasses Modified with Niobium Oxide

Popis výsledku anglicky

Bulk glasses of the series (100-x)[0.4Na(2)O-0.2Nb(2)O(5)-0.4P(2)O(5)]-xB(2)O(3) with x = 0-48 mol% B2O3 were prepared by slow cooling in air. Their glass transition temperature increases within the range of 0-16 mol% B2O3, but further additions of B2O3 result in its decrease. Their structure was investigated by Raman, B-11, and P-31 MAS NMR spectroscopy. The relative number of BO4 units decreases with increasing B2O3 content, while the number of BO3 units increases up to 59 % at x = 48. The upfield shift of a broad resonance peak in the P-31 MAS NMR spectra is ascribed to an increasing connectedness of the structural network with increasing B2O3 content. Strong Raman band at 916-929 cm(-1) shows on the presence of NbO6 octahedra in the structural network of these glasses. With the B2O3 addition, a decrease in DC conductivity is observed, which is attributed to the decrease in the concentration of Na+ ions.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Coatings

ISSN

2079-6412

e-ISSN

2079-6412

Svazek periodika

12

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

15

Strana od-do

1626

Kód UT WoS článku

000881040200001

EID výsledku v databázi Scopus

2-s2.0-85141756307