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Preparation method for porous titanium dioxide-carbon combined nano hollow microsphere

A technology of porous titanium dioxide and hollow microspheres, applied in chemical instruments and methods, nanotechnology, nanotechnology, etc., can solve the problems of uneven particle size distribution, low catalyst specific surface area, low photocatalytic activity, etc., and achieve simple process, Efficient adsorption and visible light catalytic degradation, low cost effect

Inactive Publication Date: 2014-01-01
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the TiO prepared by this method 2 -C composite microspheres have a solid structure, uneven particle size distribution, and large particle size (greater than 2 microns), so the specific surface area of ​​the catalyst is low, resulting in low photocatalytic activity

Method used

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  • Preparation method for porous titanium dioxide-carbon combined nano hollow microsphere
  • Preparation method for porous titanium dioxide-carbon combined nano hollow microsphere
  • Preparation method for porous titanium dioxide-carbon combined nano hollow microsphere

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] a) Weigh 1g of tetraisopropyl titanate (TIOP), add it into a beaker containing 50mL of absolute ethanol, stir to dissolve and disperse evenly, and prepare solution A;

[0033] b) Weigh 1g of furfural and 0.25g of dodecylamine, add 25mL of absolute ethanol, stir to dissolve and disperse evenly, and prepare solution B;

[0034] c) Slowly add solution B dropwise to solution A under vigorous stirring, and continue stirring for 1 hour after dropping;

[0035] d) Add the mixed solution obtained in step c) into a 100mL polytetrafluoroethylene solvothermal reaction kettle, seal the reaction kettle with a steel sleeve, and perform solvothermal reaction: react at 180°C for 12 hours;

[0036] e) After the reaction is completed, cool naturally, and centrifuge. The obtained product is washed with absolute ethanol for 5 times, and then vacuum-dried at 60°C for 4 hours to obtain a brown-yellow powder, which is porous TiO 2 -C (TIOP) composite nano hollow microspheres.

[0037] figu...

Embodiment 2

[0044] a) Weigh 1g of tetra-n-butyl titanate (TBOT), add it into a beaker containing 50mL of absolute ethanol, stir to dissolve and disperse evenly, and prepare solution A;

[0045] b) Weigh 1.5g furfural and 0.4g dodecylamine, add 25mL absolute ethanol, stir to dissolve and disperse evenly, and prepare solution B;

[0046] c) Slowly add solution B dropwise to solution A under vigorous stirring, and continue stirring for 1 hour after dropping;

[0047] d) Add the mixed solution obtained in step c) into a 100mL polytetrafluoroethylene solvothermal reaction kettle, seal the reaction kettle with a steel sleeve, and perform solvothermal reaction: react at 180°C for 12 hours;

[0048] e) After the reaction is completed, cool naturally, and centrifuge to separate the product. The obtained product is washed with absolute ethanol for 5 times, and then vacuum-dried at 80°C for 4 hours to obtain a brown-yellow powder, which is porous TiO 2 -C (TBOT) composite nano hollow microspheres. ...

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Abstract

The invention discloses a preparation method for porous titanium dioxide-carbon combined nano hollow microsphere, which comprises the following steps: an organic titanium source is dissolved in absolute ethyl alcohol so as to obtain solution A; an organic carbon source and template are dissolved in anhydrous ethyl alcohol so as to obtain solution B; under vigorous stirring, the solution B is dropped into the solution A, and then the stirring lasts for 0.5 to 4 hours after dripping; obtained mixture solution is added into a solvent thermal reaction kettle, then the reaction kettle is closed, and solvent thermal reaction is performed; and after reaction, natural cooling and centrifugal separation are carried out, and obtained products are dried after washing by using anhydrous ethyl alcohol. The preparation method disclosed by the invention can be used for preparing porous hollow microspheres made of TiO2-C composite nanoparticles, can be used as visible light catalyst so as to effectively perform adsorption and visible light catalytic degradation on organic pollutants, and has a broad prospect in industrial application. Besides, the preparation method disclosed by the invention has the advantages of simple process, low cost and easiness on condition control, does not require special equipment, and is suitable for mass production.

Description

technical field [0001] The invention relates to a method for preparing porous titanium dioxide-carbon composite nano hollow microspheres, and belongs to the technical field of composite nanomaterial preparation. Background technique [0002] Hollow nanosphere materials are a large class of important nanostructure materials, which have many important applications in the fields of nanomedicine, gas sensing and catalysis, especially TiO with adsorption properties, photoelectric properties and visible light catalytic properties. 2 -C composite hollow nanosphere materials have high application value in many fields such as photoelectric conversion, gas sensor, and environmental purification. [0003] Nano hollow sphere structure materials have extremely high volume and specific surface area, which can effectively promote the adsorption of organic matter and the improvement of catalytic efficiency of catalysts. Although currently for TiO 2 The preparation technology of hollow sph...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/18B01J35/10B01J20/20B01J20/28B82Y30/00B82Y40/00
Inventor 庄建东刘茜
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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