Insertion of MoO3 in Borophosphate Glasses Investigated by Magnetic Resonance Spectroscopies

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F16%3A39901462" target="_blank" >RIV/00216275:25310/16:39901462 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1021/acs.jpcc.6b02502" target="_blank" >http://dx.doi.org/10.1021/acs.jpcc.6b02502</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.jpcc.6b02502" target="_blank" >10.1021/acs.jpcc.6b02502</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Insertion of MoO3 in Borophosphate Glasses Investigated by Magnetic Resonance Spectroscopies

Popis výsledku v původním jazyce

Insertion of MoO3 oxide in the mixed borophosphate glass network has been analysed for the first time by advanced magnetic resonance spectroscopies. In a first time, the xMoO3-(100-x)(50PbO-10B2O3-40P2O5) composition line has been investigated by 1D (11B, 31P, 95Mo) and 2D-correlation NMR (11B DQ-SQ, 11B(31P) D-HMQC) at high magnetic field (18.8 T). The set of data allowed analyzing both local and medium range orders and identifying the modifications in the BOB and /or BOP mixing induced by the MoO3 insertion. In a second step, continuous wave EPR has been used to detect the presence of Mo5+ ions, resulting from partial reduction of Mo6+ during the melting stage and the chemical environment around Mo5+ species has been documented for the first time by pulsed EPR technique (HYSCORE). Altogether, the data contribute to a better understanding of the glass network modifications induced by the MoO3 insertion, including the non-linear evolution of the glass transition temperature that has been explained by a modification of the glass network nature.

Název v anglickém jazyce

Insertion of MoO3 in Borophosphate Glasses Investigated by Magnetic Resonance Spectroscopies

Popis výsledku anglicky

Insertion of MoO3 oxide in the mixed borophosphate glass network has been analysed for the first time by advanced magnetic resonance spectroscopies. In a first time, the xMoO3-(100-x)(50PbO-10B2O3-40P2O5) composition line has been investigated by 1D (11B, 31P, 95Mo) and 2D-correlation NMR (11B DQ-SQ, 11B(31P) D-HMQC) at high magnetic field (18.8 T). The set of data allowed analyzing both local and medium range orders and identifying the modifications in the BOB and /or BOP mixing induced by the MoO3 insertion. In a second step, continuous wave EPR has been used to detect the presence of Mo5+ ions, resulting from partial reduction of Mo6+ during the melting stage and the chemical environment around Mo5+ species has been documented for the first time by pulsed EPR technique (HYSCORE). Altogether, the data contribute to a better understanding of the glass network modifications induced by the MoO3 insertion, including the non-linear evolution of the glass transition temperature that has been explained by a modification of the glass network nature.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JH - Keramika, žáruvzdorné materiály a skla

OECD FORD obor

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Projekt

<a href="/cs/project/GA13-00355S" target="_blank" >GA13-00355S: Vícesložková fosforečnanová a borofosforečnanová skla</a><br>

Návaznosti

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

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Journal of Physical Chemistry C

ISSN

1932-7447

e-ISSN

—

Svazek periodika

120

Číslo periodika v rámci svazku

17

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

9443-9452

Kód UT WoS článku

000375631100050

EID výsledku v databázi Scopus

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