Titanium dioxide nano-fiber preparation method and device
A nanofiber, titanium dioxide technology, applied in fiber processing, textile and papermaking, inorganic raw material rayon, etc., can solve the problems of complex synthesis process and high manufacturing cost, and achieve simple synthesis process, good production performance and high hollow structure. Effect
Pending Publication Date: 2019-06-28
NANJING WEIAN NEW MATERIAL SCI & TECH
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Problems solved by technology
In the synthetic process of this method, cotton fiber needs to be removed, the synthetic process is complicated, and the manufacturing cost is relatively high.
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Embodiment 1
[0024] Such as figure 1 Shown: a kind of titanium dioxide nanofiber preparation method of the present embodiment, this method comprises the steps:
[0025] (1) Preparation of precursor solution: use polyvinylpyrrolidone as a complexing agent, add tetra-n-butyl titanate 1.3-1.5 times its mass, obtain a uniform solution by stirring, add polyvinylpyrrolidone to the obtained solution Continue stirring with deionized water equivalent to the quality of oxalanone to obtain a precursor solution;
[0026] (2) Prepare a spinning solution; add ethylene glycol 0.25-0.32 times its mass to the precursor solution prepared in step (1), and continue stirring to prepare a spinning solution;
[0027] (3) Electrospinning; long fibers are obtained by dry spinning;
[0028] (4) Heat treatment: Burn the long fiber obtained by spinning in step (3) to 500°C-650°C, keep it at the highest temperature point for 30-300 minutes, and cool down naturally.
[0029] In the preparation method of titanium dio...
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The invention provides a titanium dioxide nano-fiber preparation method and device. The method comprises the following steps of 1, preparing a precursor solution, wherein polyvinylpyrrolidone is adopted as a complexing agent, tetra-n-butyl titanate with the mass being 1.3-1.5 times that of the complexing agent is added, stirring is performed to obtain an uniform solution, deionized water equivalent to the mass of polyvinylpyrrolidone is added into the obtained solution for continuous stirring, and a precursor solution is obtained; 2, preparing a spinning solution, wherein ethylene glycol withthe mass being 0.25-0.32 time that of the precursor solution is added into the precursor solution prepared in step 1, and continuous stirring is performed to obtain a spinning solution; 3, performingelectrostatic spinning, wherein dry spinning is adopted to obtain long fiber; 4, performing thermal treatment, wherein the long fiber obtained by spinning in step 3 is burnt to 500-650 DEG C, heat preservation is performed at the maximum temperature point for 30-300 min, and natural cooling is performed. The titanium dioxide nano-fiber synthesized by the electrostatic spinning method is simplifiedin synthesis steps.
Description
Technical field: [0001] The invention relates to a method and device for preparing titanium dioxide nanofibers, belonging to the technical field of catalyst production equipment. Background technique: [0002] TiO 2 It is a typical semiconductor oxide and is widely used in the fields of photocatalysis, solar energy conversion, sensors and mesoporous membranes. It can not only purify the air and degrade pollutants, but also be used for antifouling and sterilization in the fields of medicine, paint, paint and food packaging. Because of TiO 2 Nanofibers have a unique structure and a large specific surface area, and their performance in photocatalysis and electrochemistry is more prominent. [0003] Chinese patent CN201410314975.1 discloses a preparation method of titanium dioxide nanofibrous material, and specifically discloses the following technical scheme, the method is based on Ti(OC 4 h 9 ) 4 It is prepared by using solvothermal method as titanium source, ethanol as ...
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IPC IPC(8): D01F9/08D01D5/00
Inventor 吴敏张仲琨秦艳涛何风靳刘伟
Owner NANJING WEIAN NEW MATERIAL SCI & TECH