Design of ordered mesoporous H₃PW₁₂O₄₀-titania materials and their photocatalytic activity to dye methyl orange degradation

详细信息    查看全文

• 作者：Kexin Li ; Yingna Guo ; Fengyan Ma ; Huichao Li ; Ling Chen ; Yihang Guo
• 关键词：Polyoxometalate ; Titania ; Ordered mesoporous material ; Photocatalysis
• 刊名：Catalysis Communications
• 出版年：2010
• 出版时间：30 April 2010
• 年：2010
• 卷：11
• 期：9
• 页码：839-843
• 全文大小：1006 K

文摘

A series of ordered mesoporous H₃PW₁₂O₄₀/TiO₂ composite materials with different H₃PW₁₂O₄₀ loadings were prepared by an evaporation-induced self-assembly (EISA) route in the presence of a triblock copolymer surfactant. The materials exhibited 2D hexagonal p6mm symmetry and anatase phase structure with large BET surface area and uniform pore size as well as narrowed bandgap with respect to neat TiO₂. The photocatalytic activity of the H₃PW₁₂O₄₀/TiO₂ materials was evaluated by the degradation of an aqueous dye methyl orange under solar simulating Xe lamp irradiation, and enhanced photocatalytic activity compared to pure TiO₂ was obtained for the samples with suitable H₃PW₁₂O₄₀ loadings.