SnO2/TiO2 composite nanofiber photocatalyst and preparation method thereof

A composite nanofiber and photocatalyst technology, which is applied in the field of polymer materials and photocatalysis, can solve the problems of difficult control of process parameters, complex process, and many process parameters, so as to improve photocatalytic activity, optimize preparation process, and simplify process parameters. Effect
CN102489289AInactive Publication Date: 2012-06-13JIANGNAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGNAN UNIV
Publication Date
2012-06-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a SnO2 / TiO2 composite nanofiber photocatalyst and a preparation method thereof, and belongs to the technical fields of macromolecular materials and photocatalysis. SnO2 / TiO2 composite nanofibers prepared by the method are used as a photocatalytic material, the problem of low separation efficiency of a titanium dioxide photon-generated carrier is solved, and the stability of a photo-generated electron-hole pair is increased, so that the photocatalytic activity of titanium dioxide is improved. According to the method, the composite nanofibers are obtained by directly using an electrostatic spinning technology and through calcination in air, and a sol-gel technology with multiple influencing factors is not introduced. The process of preparing the composite nanofibers is optimized, and the adjustment of process parameters is simplified. The material prepared by the method is used as the photocatalytic material, the photocatalytic activity of the material is far higher than that of pure titanium dioxide, and the requirement and development direction of a new-generation titanium dioxide photocatalytic material are met.
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Description

technical field

[0001] The invention belongs to the technical field of polymer materials and photocatalysis, in particular to a nanofiber photocatalyst and its preparation method, in particular to a SnO 2 / TiO 2 Composite nanofiber photocatalyst and preparation method thereof. Background technique

[0002] Titanium dioxide (TiO 2 ) is an n-type semiconductor. Due to nano TiO 2 Photocatalytic materials have the advantages of non-toxicity, high chemical stability, strong oxidation ability, strong long-term corrosion resistance, and reusability, and are widely used in wastewater treatment, air purification, sterilization, and medicine, especially in the field of photodegradation. In terms of organic pollutants, so in the study of semiconductor nanophotocatalysts, nano-TiO 2 Photocatalytic materials have received increasing attention. But nano TiO 2 As a photocatalyst, there are still two core problems, one is TiO 2 The bandgap width is 3.2eV, which belongs to wide bandg...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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