СИНТЕЗ ТА ЛЮМІНЕСЦЕНТНІ ВЛАСТИВОСТІ ТВЕРДИХ РОЗЧИНІВ K0,5xBi1-0,5x(MoxV1-x)O4

СИНТЕЗ ТА ЛЮМІНЕСЦЕНТНІ ВЛАСТИВОСТІ ТВЕРДИХ РОЗЧИНІВ K0,5xBi1-0,5x(MoxV1-x)O4

The conditions of heterovalent substitution in cationic and anionic positions of хK0,5Bi0,5MoO4 – (1-х)BiVO4 system within range of х = 0.1-0.9 with forming of К0,5xBi1-0,5x(MoxV1-x)O4 solid solutions, those possess scheelite-like type structure have been studied. All the samples of series were obta...

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Date:2020
Main Authors: Terebilenko, Kateryna, Nedilko, Sergii, Petrenko, Olga, Slobodyanik, Mykola, Chornii, Vitalii
Format: Article
Language:English
Published: V.I.Vernadsky Institute of General and Inorganic Chemistry 2020
Online Access:https://ucj.org.ua/index.php/journal/article/view/253
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Ukrainian Chemistry Journal
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spelling oai:ojs2.1444248.nisspano.web.hosting-test.net:article-2532020-12-15T17:27:07Z SYNTHESIS AND LUMINESCENCE PROPERTIES OF K0,5xBi1-0,5x(MoxV1-x)O4 SOLID SOLUTIONS СИНТЕЗ ТА ЛЮМІНЕСЦЕНТНІ ВЛАСТИВОСТІ ТВЕРДИХ РОЗЧИНІВ K0,5xBi1-0,5x(MoxV1-x)O4 Terebilenko, Kateryna Nedilko, Sergii Petrenko, Olga Slobodyanik, Mykola Chornii, Vitalii scheelite, molybdenum, vanadium, bismuth, solid solution. The conditions of heterovalent substitution in cationic and anionic positions of хK0,5Bi0,5MoO4 – (1-х)BiVO4 system within range of х = 0.1-0.9 with forming of К0,5xBi1-0,5x(MoxV1-x)O4 solid solutions, those possess scheelite-like type structure have been studied. All the samples of series were obtained by solid state technique. It was shown by IR spectroscopy and X-ray diffraction studies that molybdenum and vanadium occupying one crystallographic position with statistical distribution in х = 0.1–0.9 range of substitution. As result a lowering of lattice symmetry from tetragonal to monoclinic take place with increasing of molybdenum content. Charge compensation in system is realized through proportional substitution of bismuth by potassium in (К/Bi)O8 polyhedra. The data on diffuse reflectance indicate that increasing of substitution degree, x, lead to proportional increasing of band gap values from 2.33 to 2.72 eV for the semiconductors obtained. Intrinsic photoluminescence of the samples has been observed at low temperatures but is absent at room temperature. Total intensity of visible luminescence increases with increasing of molybdenum content in К0.5xBi1-0.5x(MoxV1-x)O4 solid solutions. Spectra of photoluminescence consist of wide two-component band with maxima at 620 and 705 nm, respectively. Simultaneous analysis of literature data and dependences of luminescence intensity on molybdenum content allow assumption that short-wavelength component related with centers, those formed on molybdate groups. Long-wavelength component related with vanadate groups. The wide bands at 375 and 410 nm in the photoluminescence excitation spectra were ascribed to absorption transitions in molybdate and vanadate oxyanions, respectively. The solid solutions studied can be used as hosts for luminescent ions or in elaboration of photocatalysts. V.I.Vernadsky Institute of General and Inorganic Chemistry 2020-12-15 Article Article Inorganic Chemistry Неорганическая химия Неорганічна хімія application/pdf https://ucj.org.ua/index.php/journal/article/view/253 10.33609/2708-129X.86.11.2020.3-12 Ukrainian Chemistry Journal; Vol. 86 No. 11 (2020): Ukrainian Chemistry Journal; 3-12 Украинский химический журнал; Том 86 № 11 (2020): Украинский химический журнал; 3-12 Український хімічний журнал; Том 86 № 11 (2020): Український хімічний журнал; 3-12 2708-129X 2708-1281 en https://ucj.org.ua/index.php/journal/article/view/253/138
institution Ukrainian Chemistry Journal
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datestamp_date 2020-12-15T17:27:07Z
collection OJS
language English
topic_facet scheelite
molybdenum
vanadium
bismuth
solid solution.
format Article
author Terebilenko, Kateryna
Nedilko, Sergii
Petrenko, Olga
Slobodyanik, Mykola
Chornii, Vitalii
spellingShingle Terebilenko, Kateryna
Nedilko, Sergii
Petrenko, Olga
Slobodyanik, Mykola
Chornii, Vitalii
СИНТЕЗ ТА ЛЮМІНЕСЦЕНТНІ ВЛАСТИВОСТІ ТВЕРДИХ РОЗЧИНІВ K0,5xBi1-0,5x(MoxV1-x)O4
author_facet Terebilenko, Kateryna
Nedilko, Sergii
Petrenko, Olga
Slobodyanik, Mykola
Chornii, Vitalii
author_sort Terebilenko, Kateryna
title СИНТЕЗ ТА ЛЮМІНЕСЦЕНТНІ ВЛАСТИВОСТІ ТВЕРДИХ РОЗЧИНІВ K0,5xBi1-0,5x(MoxV1-x)O4
title_short СИНТЕЗ ТА ЛЮМІНЕСЦЕНТНІ ВЛАСТИВОСТІ ТВЕРДИХ РОЗЧИНІВ K0,5xBi1-0,5x(MoxV1-x)O4
title_full СИНТЕЗ ТА ЛЮМІНЕСЦЕНТНІ ВЛАСТИВОСТІ ТВЕРДИХ РОЗЧИНІВ K0,5xBi1-0,5x(MoxV1-x)O4
title_fullStr СИНТЕЗ ТА ЛЮМІНЕСЦЕНТНІ ВЛАСТИВОСТІ ТВЕРДИХ РОЗЧИНІВ K0,5xBi1-0,5x(MoxV1-x)O4
title_full_unstemmed СИНТЕЗ ТА ЛЮМІНЕСЦЕНТНІ ВЛАСТИВОСТІ ТВЕРДИХ РОЗЧИНІВ K0,5xBi1-0,5x(MoxV1-x)O4
title_sort синтез та люмінесцентні властивості твердих розчинів k0,5xbi1-0,5x(moxv1-x)o4
title_alt SYNTHESIS AND LUMINESCENCE PROPERTIES OF K0,5xBi1-0,5x(MoxV1-x)O4 SOLID SOLUTIONS
description The conditions of heterovalent substitution in cationic and anionic positions of хK0,5Bi0,5MoO4 – (1-х)BiVO4 system within range of х = 0.1-0.9 with forming of К0,5xBi1-0,5x(MoxV1-x)O4 solid solutions, those possess scheelite-like type structure have been studied. All the samples of series were obtained by solid state technique. It was shown by IR spectroscopy and X-ray diffraction studies that molybdenum and vanadium occupying one crystallographic position with statistical distribution in х = 0.1–0.9 range of substitution. As result a lowering of lattice symmetry from tetragonal to monoclinic take place with increasing of molybdenum content. Charge compensation in system is realized through proportional substitution of bismuth by potassium in (К/Bi)O8 polyhedra. The data on diffuse reflectance indicate that increasing of substitution degree, x, lead to proportional increasing of band gap values from 2.33 to 2.72 eV for the semiconductors obtained. Intrinsic photoluminescence of the samples has been observed at low temperatures but is absent at room temperature. Total intensity of visible luminescence increases with increasing of molybdenum content in К0.5xBi1-0.5x(MoxV1-x)O4 solid solutions. Spectra of photoluminescence consist of wide two-component band with maxima at 620 and 705 nm, respectively. Simultaneous analysis of literature data and dependences of luminescence intensity on molybdenum content allow assumption that short-wavelength component related with centers, those formed on molybdate groups. Long-wavelength component related with vanadate groups. The wide bands at 375 and 410 nm in the photoluminescence excitation spectra were ascribed to absorption transitions in molybdate and vanadate oxyanions, respectively. The solid solutions studied can be used as hosts for luminescent ions or in elaboration of photocatalysts.
publisher V.I.Vernadsky Institute of General and Inorganic Chemistry
publishDate 2020
url https://ucj.org.ua/index.php/journal/article/view/253
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first_indexed 2025-09-24T17:43:35Z
last_indexed 2025-09-24T17:43:35Z
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