Photocatalytic Activity of Sulfur-Doped TiO2 Prepared via Thio Sol-Gel Process

Tadashi NAKAMURA; Takeshi MORIKAWA; Takeshi OHWAKI; Yasunori TAGA

doi:10.14852/jcersjsuppl.112.0.S1422.0

Journal of the Ceramic Society of Japan, Supplement 112-1, PacRim5 Special Issue

セッションID: 20-II

DOI https://doi.org/10.14852/jcersjsuppl.112.0.S1422.0

会議情報

主催: The Ceramic Society of Japan

共催: Iketani Science and Technology Foundation, International Ceramic Federation, Commemorative Organization for the Japan World Exposition '70, The American Ceramic Society, The Australasian Ceramic Society, The Chinese Ceramic Society, The Korean Ceramic Society, Joint Research Consortium of Synergy Ceramics/Fine Ceramics Research Association, Nanotechnology Researchers Network Center of Japan, The Special Coordination Funds for Promoting Science and Technology, Japan National Tourist Organization, Aichi Prefectural Government, CASIO SCIENCE PROMOTION FOUNDATION, DAIKO FOUNDATION, Nagoya Convention and Visitors Bureau, The Asahi Glass Foundation, The Kao Foundation For Arts And Sciences, The Murata Science Foundation, The Ogasawara Foundation for the Promotion of Science & Engineering, ASAHI GLASS CO., LTD. Research Center, CENTRAL GLASS CO., LTD., ELECTRIC GLASS INDUSTRY ASSOCIATION OF JAPAN (EGAJ), Hattori Company, Ltd., Hitachi Research Laboratory, Hitachi, Ltd., HOYA CORPORATION, INAX Corporation, ITOCHU CERATECH CORP., Japan Cement Association, KYOCERA Corporation, KYUSHU REFRACTORIES CO., LTD., MINO CERAMIC CO., LTD., Murata Manufacturing Co., Ltd., NGK INSULATORS LTD., NGK SPARK PLUG CO., LTD., NICHIAS Corporation, NIKKO COMPANY, Nippon Electric Glass Co., Ltd., Nippon Sheet Glass Co., Ltd., NORITAKE CO., LIMITED, Tokuyama Corporation, TOTO LTD.

Papers

Photocatalytic Activity of Sulfur-Doped TiO₂ Prepared via Thio Sol-Gel Process

Tadashi NAKAMURA, Takeshi MORIKAWA, Takeshi OHWAKI, Yasunori TAGA

著者情報

キーワード: Photocatalysis, Doped TiO₂, Sulfur, Thio sol-gel process, Visible light

会議録・要旨集フリー

詳細

抄録

Sulfur-doped TiO₂ powder was synthesized by calcination of an alkoxysulfide precipitate prepared by the reaction of titanium tetraisopropoxide with H₂S gas in acetonitrile at room temperature. The obtained powder was characterized to have an anatase crystal structure in which sulfur atoms were incorporated into the substitutional sites of oxygen in TiO₂ to form the Ti-S bonds, by using XRD and XPS. The sulfur doping caused the absorption edge to be shifted to the lower energy region. Consequently, gaseous acetaldehyde was photocatalytically decomposed into carbon dioxide on the sulfur-doped TiO₂ powder much faster than on the undoped TiO₂ powder under visible light irradiation as well as UV irradiation.

責任著者(Corresponding author)

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