Liquid-Phase Synthesis of Ba2V2O7 Phosphor Powders and Films Using Immiscible Biphasic Organic-Aqueous Systems

Mami Takahashi; Manabu Hagiwara; Shinobu Fujihara

doi:10.1021/acs.inorgchem.6b00716

Liquid-Phase Synthesis of Ba₂V₂O₇ Phosphor Powders and Films Using Immiscible Biphasic Organic-Aqueous Systems

Mami Takahashi, Manabu Hagiwara, Shinobu Fujihara

Department of Applied Chemistry

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

A liquid-phase synthesis of inorganic phosphor materials at a moderate temperature was proposed by using immiscible liquid-liquid biphasic systems. A self-activated Ba₂V₂O₇ phosphor was actually synthesized from vanadium alkoxide dissolved in an organic solution and barium acetate in an aqueous solution. A mild hydrolysis reaction of the alkoxide started at the organic-inorganic interface, and an intermediate compound, Ba(VO₃)₂·H₂O, was initially formed. Ba₂V₂O₇ powders were then obtained by the conversion from Ba(VO₃)₂·H₂O promoted in the aqueous solution. Ba₂V₂O₇ films were obtained on surface-modified silica glass substrates through the similar chemical reactions. Factors such as the surface state of substrates, the kind of organic solvents, and the volume of aqueous solutions were examined to improve the film deposition behavior. The resultant Ba₂V₂O₇ materials showed broad-band visible photoluminescence upon irradiation with ultraviolet light based on the charge transfer transition in the VO₄ ^3- units existing as dimers.

Original language	English
Pages (from-to)	7879-7885
Number of pages	7
Journal	Inorganic Chemistry
Volume	55
Issue number	16
DOIs	https://doi.org/10.1021/acs.inorgchem.6b00716
Publication status	Published - 2016 Aug 15

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry

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title = "Liquid-Phase Synthesis of Ba2V2O7 Phosphor Powders and Films Using Immiscible Biphasic Organic-Aqueous Systems",

abstract = "A liquid-phase synthesis of inorganic phosphor materials at a moderate temperature was proposed by using immiscible liquid-liquid biphasic systems. A self-activated Ba2V2O7 phosphor was actually synthesized from vanadium alkoxide dissolved in an organic solution and barium acetate in an aqueous solution. A mild hydrolysis reaction of the alkoxide started at the organic-inorganic interface, and an intermediate compound, Ba(VO3)2·H2O, was initially formed. Ba2V2O7 powders were then obtained by the conversion from Ba(VO3)2·H2O promoted in the aqueous solution. Ba2V2O7 films were obtained on surface-modified silica glass substrates through the similar chemical reactions. Factors such as the surface state of substrates, the kind of organic solvents, and the volume of aqueous solutions were examined to improve the film deposition behavior. The resultant Ba2V2O7 materials showed broad-band visible photoluminescence upon irradiation with ultraviolet light based on the charge transfer transition in the VO4 3- units existing as dimers.",

author = "Mami Takahashi and Manabu Hagiwara and Shinobu Fujihara",

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AU - Takahashi, Mami

AU - Hagiwara, Manabu

AU - Fujihara, Shinobu

PY - 2016/8/15

Y1 - 2016/8/15

N2 - A liquid-phase synthesis of inorganic phosphor materials at a moderate temperature was proposed by using immiscible liquid-liquid biphasic systems. A self-activated Ba2V2O7 phosphor was actually synthesized from vanadium alkoxide dissolved in an organic solution and barium acetate in an aqueous solution. A mild hydrolysis reaction of the alkoxide started at the organic-inorganic interface, and an intermediate compound, Ba(VO3)2·H2O, was initially formed. Ba2V2O7 powders were then obtained by the conversion from Ba(VO3)2·H2O promoted in the aqueous solution. Ba2V2O7 films were obtained on surface-modified silica glass substrates through the similar chemical reactions. Factors such as the surface state of substrates, the kind of organic solvents, and the volume of aqueous solutions were examined to improve the film deposition behavior. The resultant Ba2V2O7 materials showed broad-band visible photoluminescence upon irradiation with ultraviolet light based on the charge transfer transition in the VO4 3- units existing as dimers.

AB - A liquid-phase synthesis of inorganic phosphor materials at a moderate temperature was proposed by using immiscible liquid-liquid biphasic systems. A self-activated Ba2V2O7 phosphor was actually synthesized from vanadium alkoxide dissolved in an organic solution and barium acetate in an aqueous solution. A mild hydrolysis reaction of the alkoxide started at the organic-inorganic interface, and an intermediate compound, Ba(VO3)2·H2O, was initially formed. Ba2V2O7 powders were then obtained by the conversion from Ba(VO3)2·H2O promoted in the aqueous solution. Ba2V2O7 films were obtained on surface-modified silica glass substrates through the similar chemical reactions. Factors such as the surface state of substrates, the kind of organic solvents, and the volume of aqueous solutions were examined to improve the film deposition behavior. The resultant Ba2V2O7 materials showed broad-band visible photoluminescence upon irradiation with ultraviolet light based on the charge transfer transition in the VO4 3- units existing as dimers.

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Liquid-Phase Synthesis of Ba₂V₂O₇ Phosphor Powders and Films Using Immiscible Biphasic Organic-Aqueous Systems

Abstract

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