Preparation and characterization of Pt–TiO2–SiO2 mesoporous materials and visible-light photocatalytic performance期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Preparation and characterization of Pt–TiO2–SiO2 mesoporous materials and visible-light photocatalytic performance

Affiliation:	1. Department of Chemistry, Molecular-Level Interfaces Research Center, KAIST, Daejeon 305-701, Republic of Korea;2. Beamline Research Division, Pohang Accelerator Laboratory (PAL), Pohang 790-784, Republic of Korea;3. Department of Chemistry, Pukyong National University, Busan 48153, Republic of Korea;4. Department of Chemistry, Sookmyung Women''s University, Seoul 140-742, Republic of Korea;1. 3D-OXIDES, 130 Rue Gustave Eiffel, Saint Genis Pouilly 01630, France;2. HEPIA, University of Applied Sciences (HES-SO), 4 rue de la Prairie, CH-1202 Genève, Switzerland;3. Laboratoire de Céramique, Ecole Polytechnique Fédérale de Lausanne, Station 12, CH-1015 Lausanne, Switzerland

Abstract:	TiO₂–SiO₂ metal oxide materials with a mesostructure have been prepared by a novel method in which hydrolysis and condensation of titanium tetraisopropoxide (TTIP) and tetraethoxysilane (TEOS) were controlled by the pH change of acidic solution. The Pt-modified TiO₂–SiO₂ catalysts were synthesized by the photo-reduction method. The resulting materials showed a high photocatalytic activity for the photodegradation of methyl orange in the visible-light range. A reaction mechanism was proposed and discussed.

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