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.
Publisher Copyright:
© 2015 Elsevier Ltd.
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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U2 - 10.1016/j.jeurceramsoc.2015.01.013
DO - 10.1016/j.jeurceramsoc.2015.01.013
M3 - Article
AN - SCOPUS:84933674978
VL - 35
SP - 2139
EP - 2144
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
SN - 0955-2219
IS - 7
ER -