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Title: Preparation of Ti/B binary oxides by sol-gel method and their photocatalytic activity for stoichiometric H{sub 2}O decomposition

Abstract

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.

Authors:
; ; ; ;  [1]
  1. Research Inst. of Innovative Technology for the Earth, Kyoto (Japan). Catalysis Science Lab.
Publication Date:
Sponsoring Org.:
New Energy and Industrial Technology Development Organization, Tokyo (Japan)
OSTI Identifier:
571953
Report Number(s):
CONF-961202-
ISBN 1-55899-358-4; TRN: IM9806%%163
Resource Type:
Conference
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
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; TITANIUM OXIDES; BORON OXIDES; SOL-GEL PROCESS; CATALYTIC EFFECTS; HYDROGEN PRODUCTION; PHASE STUDIES; CRYSTAL-PHASE TRANSFORMATIONS; ULTRAVIOLET RADIATION; PHOTOLYSIS; WATER

Citation Formats

Moon, S C, Tabata, S, Okada, K, Fujiki, M, and Mametsuka, H. Preparation of Ti/B binary oxides by sol-gel method and their photocatalytic activity for stoichiometric H{sub 2}O decomposition. United States: N. p., 1997. Web.
Moon, S C, Tabata, S, Okada, K, Fujiki, M, & Mametsuka, H. Preparation of Ti/B binary oxides by sol-gel method and their photocatalytic activity for stoichiometric H{sub 2}O decomposition. United States.
Moon, S C, Tabata, S, Okada, K, Fujiki, M, and Mametsuka, H. 1997. "Preparation of Ti/B binary oxides by sol-gel method and their photocatalytic activity for stoichiometric H{sub 2}O decomposition". United States.
@article{osti_571953,
title = {Preparation of Ti/B binary oxides by sol-gel method and their photocatalytic activity for stoichiometric H{sub 2}O decomposition},
author = {Moon, S C and Tabata, S and Okada, K and Fujiki, M and Mametsuka, H},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/571953}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Dec 31 00:00:00 EST 1997},
month = {Wed Dec 31 00:00:00 EST 1997}
}

Conference:
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