Photocatalytic Properties of TiO2-Coatings Mounted on CaAl2O4:Eu2+, Nd3+ without Light Source

Hui Hui Li; Yu Hua Wang

doi:10.4028/www.scientific.net/MSF.620-622.671

Paper Titles

Preparation and Characterization of Fe-Doped BiVO₄
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Influence by Difference of the Photocatalyst Nanoparticle Shape to Skin
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Preparation and Photocatalytic Performance of Nano Titania-Coated Beads
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Improvement in Photocatalytic Activity of TiO₂ by Addition of Small Amount of TiO_2-xN_y
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Photocatalytic Properties of TiO₂-Coatings Mounted on CaAl₂O₄:Eu²⁺, Nd³⁺ without Light Source
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A New Preparation Method of Visible Light Responsive Titanium Dioxide Photocatalytic Films by Sol-Gel Method
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Effective of SiO₂ Addition on the Self-Cleaning and Photocatalytic Properties of TiO₂ Films by Sol-Gel Process
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Synthesis of Mn-N-Codoped TiO₂ Photocatalyst and its Photocatalytic Reactivity under Visible Light Irradiation
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Preparation of Titanate Nanotubes by Hydrothermal Method
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Photocatalytic Properties of TiO₂-Coatings Mounted on CaAl₂O₄:Eu²⁺, Nd³⁺ without Light Source

Abstract:

This paper aims at the investigation of photocatalytic properties of titanium dioxide coatings covering on the surfaces of long blue-emitting afterglow CaAl2O4:Eu2+, Nd3+ elaborated by a sol-gel method. Morphologies and microstructures of the coatings were observed mainly by transmission electron microscopy (TEM) and analyzed by X-ray diffraction (XRD). The photocatalytic behavior of the TiO2-base surfaces was evaluated by the degradation of methyl orange (MO) solution. It suggested that a layer of TiO2 film mounted on the phosphor particles successfully. Also, the TiO2 coatings had remained its photocatalytic role on the as-prepared sample even after the light source was removed. The inner long blue-emitting afterglow had released blue afterglow after removing light source and allowed for reactive TiO2 surfaces to be held for the removal of methyl orange.