A preparation method of titanium dioxide fiber with photocatalytic function and nano-polycrystalline structure

A technology of titanium dioxide and polycrystalline structure, which is applied in the direction of titanium dioxide, chemical instruments and methods, titanium oxide/hydroxide, etc., can solve the problems of industrial scale-up difficulties, many types of organic raw materials, and complex rubber-making processes, etc., to achieve improved photocatalysis Excellent performance, good spinnability, rich pore structure
CN102286804AInactive Publication Date: 2011-12-21NANJING UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING UNIV OF SCI & TECH
Publication Date
2011-12-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation method of titanium dioxide fibers with a photocatalysis function and a polycrystalline nanostructure. The preparation method comprises the following steps: respectively diluting titanium tetrachloride and potassium acetate, which are taken as raw materials, in ethanol, mixing at 0-10 DEG C under the condition of stirring to generate titanium acetate and potassium chloride, filtering to remove potassium chloride by taking advantage of the property that potassium chloride is insoluble to ethanol so as to acquire filtrate of ethanol in which titanium acetateis dissolved, concentrating the filtrate to obtain a titanium acetate sol spinning solution, centrifuging and spinning to obtain precursor fibers, and performing steam activation thermal treatment toobtain the titanium dioxide fibers. The preparation method disclosed by the invention has the advantages of lower raw material cost, simpler sol production process and pollution-free preparation process.
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Description

technical field

[0001] The invention belongs to the technical field of functional materials, in particular to a titanium dioxide (TiO 2 ) method of preparing fibers. Background technique

[0002] TiO was discovered by Fujishima and Honda in 1972 2 Since the photocatalytic effect, semiconductor photocatalysis technology has become a hot spot for researchers from all over the world. So far, the semiconductor photocatalysts that have been studied include TiO 2 , CdS, WO 3 , Fe 2 o 3 , ZnO, ZnS, SnO 2 etc., where TiO 2 The chemical properties are relatively stable, low cost, non-toxic, no secondary pollution, high catalytic activity, strong oxidation ability, and it is regarded as the most promising photocatalytic material in the field of water treatment.

[0003] But currently TiO 2 Both of the two systems applied in the field of photocatalytic water treatment have certain defects and drawbacks. One is nano TiO 2 Suspended phase system, this method is easy to agglome...

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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