Nano-phase separation and the effect of SnO addition in TiO2-precipitated glass-ceramics

Hirokazu Masai; Takamichi Miyazaki; Ko Mibu; Yoshihiro Takahashi; Takumi Fujiwara

doi:10.1016/j.jeurceramsoc.2015.01.013

Nano-phase separation and the effect of SnO addition in TiO₂-precipitated glass-ceramics

Hirokazu Masai, Takamichi Miyazaki, Ko Mibu, Yoshihiro Takahashi, Takumi Fujiwara

ENG - Applied Physics

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

8 Citations (Scopus)

Abstract

We have investigated the nano-structure of TiO₂-precipitated CaO-B₂O₃-Bi₂O₃-Al₂O₃-TiO₂ (CaBBAT) glass-ceramics, and discussed the effect of the addition of SnO. ¹¹⁹Sn Mössbauer spectra of the Sn-doped glass suggest that most of the SnO was oxidized during melting. Selective crystallization of TiO₂ occurred independently of SnO addition in the homogeneous glass. However, EDX analysis of the glass-ceramics revealed that the Ti cation is partially localized and that the addition of SnO promotes the nano-phase separation. It can be concluded, therefore, that the addition of SnO influenced the formation of secondary particles of TiO₂ nano-crystallites and thereby improved the photocatalytic activity.

Original language	English
Pages (from-to)	2139-2144
Number of pages	6
Journal	Journal of the European Ceramic Society
Volume	35
Issue number	7
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2015.01.013
Publication status	Published - 2015

Keywords

Crystallization
Glass-ceramics
Glasses
TiO

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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title = "Nano-phase separation and the effect of SnO addition in TiO2-precipitated glass-ceramics",

abstract = "We have investigated the nano-structure of TiO2-precipitated CaO-B2O3-Bi2O3-Al2O3-TiO2 (CaBBAT) glass-ceramics, and discussed the effect of the addition of SnO. 119Sn M{\"o}ssbauer spectra of the Sn-doped glass suggest that most of the SnO was oxidized during melting. Selective crystallization of TiO2 occurred independently of SnO addition in the homogeneous glass. However, EDX analysis of the glass-ceramics revealed that the Ti cation is partially localized and that the addition of SnO promotes the nano-phase separation. It can be concluded, therefore, that the addition of SnO influenced the formation of secondary particles of TiO2 nano-crystallites and thereby improved the photocatalytic activity.",

keywords = "Crystallization, Glass-ceramics, Glasses, TiO",

author = "Hirokazu Masai and Takamichi Miyazaki and Ko Mibu and Yoshihiro Takahashi and Takumi Fujiwara",

note = "Funding Information: This work was supported by the Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sport, and Culture , Japan, no. 19569001 . The 119 Sn M{\"o}ssbauer measurement was performed at Nagoya Institute of Technology under the Nanotechnology Platform Program of MEXT, Japan. ",

year = "2015",

doi = "10.1016/j.jeurceramsoc.2015.01.013",

language = "English",

volume = "35",

pages = "2139--2144",

journal = "Journal of the European Ceramic Society",

issn = "0955-2219",

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TY - JOUR

T1 - Nano-phase separation and the effect of SnO addition in TiO2-precipitated glass-ceramics

AU - Masai, Hirokazu

AU - Miyazaki, Takamichi

AU - Mibu, Ko

AU - Takahashi, Yoshihiro

AU - Fujiwara, Takumi

N1 - Funding Information: This work was supported by the Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sport, and Culture , Japan, no. 19569001 . The 119 Sn Mössbauer measurement was performed at Nagoya Institute of Technology under the Nanotechnology Platform Program of MEXT, Japan.

PY - 2015

Y1 - 2015

N2 - We have investigated the nano-structure of TiO2-precipitated CaO-B2O3-Bi2O3-Al2O3-TiO2 (CaBBAT) glass-ceramics, and discussed the effect of the addition of SnO. 119Sn Mössbauer spectra of the Sn-doped glass suggest that most of the SnO was oxidized during melting. Selective crystallization of TiO2 occurred independently of SnO addition in the homogeneous glass. However, EDX analysis of the glass-ceramics revealed that the Ti cation is partially localized and that the addition of SnO promotes the nano-phase separation. It can be concluded, therefore, that the addition of SnO influenced the formation of secondary particles of TiO2 nano-crystallites and thereby improved the photocatalytic activity.

AB - We have investigated the nano-structure of TiO2-precipitated CaO-B2O3-Bi2O3-Al2O3-TiO2 (CaBBAT) glass-ceramics, and discussed the effect of the addition of SnO. 119Sn Mössbauer spectra of the Sn-doped glass suggest that most of the SnO was oxidized during melting. Selective crystallization of TiO2 occurred independently of SnO addition in the homogeneous glass. However, EDX analysis of the glass-ceramics revealed that the Ti cation is partially localized and that the addition of SnO promotes the nano-phase separation. It can be concluded, therefore, that the addition of SnO influenced the formation of secondary particles of TiO2 nano-crystallites and thereby improved the photocatalytic activity.

KW - Crystallization

KW - Glass-ceramics

KW - Glasses

KW - TiO

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JO - Journal of the European Ceramic Society

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