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Composites of TiO2 pillared sericite: Synthesis, characterization and photocatalytic degradation of methyl orange
Abstract A series of TiO2 pillared sericite nanocomposites were prepared by the sol-gel method followed by thermal treatment. Two factors, namely sericite dosage, and calcination temperature were researched to see their effects on the structure and properties of TiO2 pillared sericite nanocomposite. X-ray diffraction and nitrogen adsorption-desorption isotherms were used to analyze the changes of crystal phase, grain size and pore structure information of the generated TiO2 nanoparticles in the composite. Among all the samples, the TiO2 pillared sericite composite calcined at 800 °C has the best photocatalytic properties. Trapping experiment proved that the main active species are ·O2 −, h+ and ·OH in order of participation during the photodegradation of methyl orange by the prepared composite. Sericite has a synergistic role in enhancing the photocatalytic activity of TiO2 pillared sericite nanocomposite. Good photocatalytic activity, together with its availability and good recyclability, makes sericite a promising substrate in the field of photocatalysis.
Highlights TiO2 pillared sericite is first time prepared by sol-gel method. Acetone is chosen as one of the solvents instead of ethanol during the reaction. The final product has better photocatalytic properties than similar products.
Composites of TiO2 pillared sericite: Synthesis, characterization and photocatalytic degradation of methyl orange
Abstract A series of TiO2 pillared sericite nanocomposites were prepared by the sol-gel method followed by thermal treatment. Two factors, namely sericite dosage, and calcination temperature were researched to see their effects on the structure and properties of TiO2 pillared sericite nanocomposite. X-ray diffraction and nitrogen adsorption-desorption isotherms were used to analyze the changes of crystal phase, grain size and pore structure information of the generated TiO2 nanoparticles in the composite. Among all the samples, the TiO2 pillared sericite composite calcined at 800 °C has the best photocatalytic properties. Trapping experiment proved that the main active species are ·O2 −, h+ and ·OH in order of participation during the photodegradation of methyl orange by the prepared composite. Sericite has a synergistic role in enhancing the photocatalytic activity of TiO2 pillared sericite nanocomposite. Good photocatalytic activity, together with its availability and good recyclability, makes sericite a promising substrate in the field of photocatalysis.
Highlights TiO2 pillared sericite is first time prepared by sol-gel method. Acetone is chosen as one of the solvents instead of ethanol during the reaction. The final product has better photocatalytic properties than similar products.
Composites of TiO2 pillared sericite: Synthesis, characterization and photocatalytic degradation of methyl orange
Liang, Yu (author) / Li, Wei (author) / Bei, Baohui (author) / Li, Chong (author) / He, Zetian (author) / Wang, Xuan (author) / Zhou, Run (author) / Ding, Hao (author) / Li, Shu (author)
Applied Clay Science ; 242
2023-06-18
Article (Journal)
Electronic Resource
English
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