Preparation of Ti/B binary oxides by sol-gel method and their photocatalytic activity for stoichiometric H{sub 2}O decomposition
- Research Inst. of Innovative Technology for the Earth, Kyoto (Japan). Catalysis Science Lab.
Since the discovery of water decomposition over photoelectrochemical cells, hydrogen production from water decomposition by sun light has received attention as a solar energy conversion. 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 O{sub 2}, 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 TiO{sub 2}, 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 dependent on the crystal phase of titanium oxide in the Ti/B photocatalysts.
- Sponsoring Organization:
- New Energy and Industrial Technology Development Organization, Tokyo (Japan)
- OSTI ID:
- 571953
- Report Number(s):
- CONF-961202-; ISBN 1-55899-358-4; TRN: IM9806%%163
- Resource Relation:
- Conference: 1996 Fall meeting of the Materials Research Society (MRS), Boston, MA (United States), 2-6 Dec 1996; Other Information: PBD: 1997; Related Information: Is Part Of Advanced catalytic materials -- 1996; Lednor, P.W. [ed.] [Shell Research and Technology Centre, Amsterdam (Netherlands)]; Ledoux, M.J. [ed.] [Univ. of Strasbourg (France)]; Nagaki, D.A. [ed.] [Union Carbide Corp., South Charleston, WV (United States)]; Thompson, L.T. [ed.] [Univ. of Michigan, Ann Arbor, MI (United States)]; PB: 319 p.; Materials Research Society symposium proceedings, Volume 454
- Country of Publication:
- United States
- Language:
- English
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