Synthesis, Characterization and Photocatalytic Application of TiO2/SnO2 Nanocomposite Obtained Under Non-thermal Plasma Condition at Atmospheric Pressure

Plasma Chemistry and Plasma Processing - Tập 36 - Trang 799-811 - 2016
Elie Acayanka1, Duclair S. kuete1,2, Georges Y. Kamgang1, Serge Nzali3, Samuel Laminsi1, Peter T. Ndifon1
1Department of Inorganic Chemistry, Faculty of Science, University of Yaounde I, Yaoundé, Cameroon
2Department of Chemistry and Physics of Solids and Surfaces, Institut Jean Lamour, Nancy Cedex, France
3Faculty of Agronomy and Agricultural Sciences, School of Wood, Water and Natural Resources, University of Dschang, Ebolowa, Cameroon

Tóm tắt

A plasma-assisted synthesis of TiO2/SnO2 nanocomposite is described. In this approach, a precursor containing a mixture of [TiCl3 and SnCl2] exposed to electric discharge was oxidized by plasma-generated reactive species (HO·/H2O = 2.85 eV/SHE). SnO2 microstructures with a diameter of 10–40 µm were coated by thin layers TiO2 nanorods with mean diameter of 6–8 nm. The obtained TiO2/SnO2 nanocomposite was characterized by transmission and scanning electron microscopy, X-ray diffraction and Fourier transform infrared. TiO2/SnO2 nanocomposite was found to be a promising new material for the photocatalytic discoloration of aqueous Remazol Brilliant Blue-R dye under daylight and UVA light sources, due to the combined effects of large specific surface area and heterojunction which efficiently separates the electron–hole pairs delaying the charge recombination. The leaching test indicated that the nanocomposite is stable easily reusable.

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