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Preparation of Ti/B Binary Oxides by Sol-Gel Method and Their Photocatalytic Activity for Stoichiometric H2O Decomposition

Published online by Cambridge University Press:  10 February 2011

S. C. Moon ,
S. Tabata ,
K. Okada ,
M. Fujiki  and
H. Mametsuka
S. C. Moon*
Affiliation:
Catalysis Science Laboratory, Research Institute of Innovative Technology for the Earth, Kizugawadai 9–2, Kizu-cho, Soraku-gun, Kyoto 619–02, Japan, [email protected]
S. Tabata
Affiliation:
Catalysis Science Laboratory, Research Institute of Innovative Technology for the Earth, Kizugawadai 9–2, Kizu-cho, Soraku-gun, Kyoto 619–02, Japan, [email protected]
K. Okada
Affiliation:
Catalysis Science Laboratory, Research Institute of Innovative Technology for the Earth, Kizugawadai 9–2, Kizu-cho, Soraku-gun, Kyoto 619–02, Japan, [email protected]
M. Fujiki
Affiliation:
Catalysis Science Laboratory, Research Institute of Innovative Technology for the Earth, Kizugawadai 9–2, Kizu-cho, Soraku-gun, Kyoto 619–02, Japan, [email protected]
H. Mametsuka
Affiliation:
Catalysis Science Laboratory, Research Institute of Innovative Technology for the Earth, Kizugawadai 9–2, Kizu-cho, Soraku-gun, Kyoto 619–02, Japan, [email protected]
*
* To whom correspondence should be addressed.
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Abstract

A titanium-boron binary oxide has been prepared by the sol-gel method and characterized using SEM, TEM, UV-VIS reflectance, and X-ray diffraction spectroscopies. These measurements indicated that the obtained Ti/B gel with no treatment exhibited an amorphous structure. After calcination in O2, the crystalline structure of titanium oxide species in the Ti/B binary oxide was changed while boron oxide species maintained in the state of amorphous. Titanium oxide species in the Ti/B binary oxide calcined at 673 K showed an anatase phase of TiO2, and changed with the calcination temperatures from anatase phase to rutile phase. The Pt loaded Ti/B photocatalysts in aqueous suspension system decomposed water stoichiometrically under UV-irradiation. Their photocatalytic activities decreased with increasing the calcination temperature, indicating the photocatalytic activities of the Ti/B binary oxides were depended on the crystal phase of titanium oxide in the Ti/B photocatalysts.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 454: Symposium S – Advanced Catalytic Materials–1996 , 1996 , 85
Copyright
Copyright © Materials Research Society 1997

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References

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