Preparation method of rear earth europium doped hollow nano TiO2 glass micro beads

A hollow glass microbead and nanotechnology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve the problem of lack of photocatalytic layer, and achieve easy operation. , save raw materials, increase the effect of specific surface area
CN104069847AInactive Publication Date: 2014-10-01XI'AN POLYTECHNIC UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XI'AN POLYTECHNIC UNIVERSITY
Publication Date
2014-10-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation method of rear earth europium doped hollow nano TiO2 glass micro beads. The preparation method of the rear earth europium doped hollow nano TiO2 glass micro beads comprises the following steps: firstly, coating surfaces of hollow glass micro beads with magnetic nano Fe3O4 by ferric sulfate, sodium thiosulfate, urea, polyethylene glycol-1000; then coating a SiO2 intermediate layer with tetraethoxysilane, and finally coating a europium doped nano TiO2 photocatalyst by titanous sulfate, the urea, polyvinylpyrrolidone and europium nitrate, so as to obtain the rear earth element doped hollow magnetic photocatalysis glass micro beads with core-shell structures. By adopting the preparation method, the rear earth europium doped hollow nano TiO2 glass micro beads has the excellent magnetic performance on the premise of not reducing the photocatalysis activity of TiO2.
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Description

technical field

[0001] The invention belongs to the technical field of preparation methods of functional inorganic non-metallic materials, and relates to a method for coating and modifying hollow glass microspheres, in particular to a rare earth europium-doped nano-TiO 2 Preparation method of hollow glass microspheres. Background technique

[0002] There are two key issues in the development and application of solid and liquid photocatalytic systems: one is how to improve the catalytic activity of the catalyst; the other is the separation, recovery and reuse of the catalyst. As widely used TiO 2 For photocatalytic materials, people have conducted in-depth research on many aspects such as titanium source types, preparation conditions, crystal types, interplanar spacing, grain size, rare earth doping, and dye sensitization. Studies have shown that rare earth elements doped TiO 2 It affects its light absorption performance, charge diffusion, surface reaction, particle size a...

Claims

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