Brown Pigments Based on Perovskite Structure of BiFeO3-delta

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F18%3A39912639" target="_blank" >RIV/00216275:25310/18:39912639 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389013:_____/18:00490311

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s10973-017-6805-3" target="_blank" >http://dx.doi.org/10.1007/s10973-017-6805-3</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10973-017-6805-3" target="_blank" >10.1007/s10973-017-6805-3</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Brown Pigments Based on Perovskite Structure of BiFeO3-delta

Popis výsledku v původním jazyce

Light brown inorganic pigments based on BiFeO3 doped by Sr2+ cations were prepared by a conventional solid-state reaction at high temperature. This study is focused on the synthesis of Bi1-xSr(x)FeO3-delta powders in a range of substitution (x = 0-0.35; with step size 0.05). The main role of strontium is to overcome the defects that come to exist during the evaporation of Bi over material preparation. The substitution of trivalent bismuth ions by divalent strontium ions results in oxygen deficiency in the lattice, which was proved by both thermogravimetric analysis and elemental analysis. The substitution has a positive effect on the thermal stability of samples. The thermal stability of BiFeO3 is 1046 K, whereas the substitution of 20 mol% of Bi3+ by Sr2+ ions shifted it to 1403 K and powder with composition Bi0.65Sr0.35FeO3-delta has a thermal stability that is higher than 1434 K. An increasing range of substitution is connected with the change in the pigment color from reddish-brown to orange-brown and back to reddish-brown. The Bi0.85Sr0.15FeO3-delta pigment prepared by calcination at 1273 K offers the most interesting color properties (L* = 45.57; a* = 20.38; b* = 26.23).

Název v anglickém jazyce

Brown Pigments Based on Perovskite Structure of BiFeO3-delta

Popis výsledku anglicky

Light brown inorganic pigments based on BiFeO3 doped by Sr2+ cations were prepared by a conventional solid-state reaction at high temperature. This study is focused on the synthesis of Bi1-xSr(x)FeO3-delta powders in a range of substitution (x = 0-0.35; with step size 0.05). The main role of strontium is to overcome the defects that come to exist during the evaporation of Bi over material preparation. The substitution of trivalent bismuth ions by divalent strontium ions results in oxygen deficiency in the lattice, which was proved by both thermogravimetric analysis and elemental analysis. The substitution has a positive effect on the thermal stability of samples. The thermal stability of BiFeO3 is 1046 K, whereas the substitution of 20 mol% of Bi3+ by Sr2+ ions shifted it to 1403 K and powder with composition Bi0.65Sr0.35FeO3-delta has a thermal stability that is higher than 1434 K. An increasing range of substitution is connected with the change in the pigment color from reddish-brown to orange-brown and back to reddish-brown. The Bi0.85Sr0.15FeO3-delta pigment prepared by calcination at 1273 K offers the most interesting color properties (L* = 45.57; a* = 20.38; b* = 26.23).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

<a href="/cs/project/GA16-06697S" target="_blank" >GA16-06697S: Syntéza a charakterizace nových barevných směsných oxidů kovů</a><br>

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Journal of Thermal Analysis and Calorimetry

ISSN

1388-6150

e-ISSN

—

Svazek periodika

133

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

421-428

Kód UT WoS článku

000435398700041

EID výsledku v databázi Scopus

2-s2.0-85033401837