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Method for preparing uniform spherical mesoporous titanium dioxide

A mesoporous titanium dioxide, spherical technology, applied in the preparation of spherical mesoporous titanium dioxide, the preparation of uniform spherical mesoporous titanium dioxide, can solve the problem of uneven pore size distribution, achieve the effect of short reaction cycle, mild preparation conditions and low price

Active Publication Date: 2015-01-14
重庆牛量商贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of preparation method of uniform spherical mesoporous titania, with cheap TiOSO 4 As a titanium source and SDS as a template to solve the problem of uneven pore size distribution

Method used

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  • Method for preparing uniform spherical mesoporous titanium dioxide
  • Method for preparing uniform spherical mesoporous titanium dioxide
  • Method for preparing uniform spherical mesoporous titanium dioxide

Examples

Experimental program
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Effect test

Embodiment 1

[0025] At room temperature, 0.8599g of TiOSO 4 Dissolve in 20mL 2mol / L HCl solution under constant stirring; under the condition of constant stirring, add 30mL distilled water into the titanium-containing solution, and stir for 2h to form a mixed solution; transfer the obtained mixed solution to 100mL polytetrafluoroethylene ethylene-lined autoclave; put the autoclave into an oven and keep it at 150°C for 12 hours; after hydrothermal treatment, cool the autoclave to room temperature naturally; centrifuge the obtained sediment and wash it with distilled water for 3 The second time, the product was dried at 60°C for 24 hours in a blast drying oven; the obtained product was placed in a box-type calciner and calcined at 450°C for 4 hours to obtain TiO 2 powder.

Embodiment 2

[0027] At room temperature, 0.8599g of TiOSO 4 Dissolve in 20mL of 2mol / L HCl solution under constant stirring to obtain a titanium-containing solution; at room temperature, add 0.4742g of SDS to 30mL of distilled water, and stir continuously until a transparent solution is formed; under the condition of constant stirring, the obtained transparent solution Add it dropwise into the titanium-containing solution, and stir for 2 hours to form a mixed solution; transfer the obtained mixed solution to a 100mL polytetrafluoroethylene-lined autoclave; tighten the autoclave and put it in an oven at 150 ℃ for 12 hours; after hydrothermal treatment, the autoclave was naturally cooled to room temperature; the obtained precipitate was centrifuged, washed 3 times with distilled water, and dried at 60 ℃ for 24 hours in a blast drying oven to obtain the product; the obtained product Put it in a box-type calciner and calcinate at 450°C for 4 hours to obtain TiO 2 powder.

Embodiment 3

[0029] At room temperature, 0.8599g of TiOSO 4 Dissolve in 20mL of 2mol / L HCl solution under constant stirring to obtain a titanium-containing solution; at room temperature, add 0.9474g of SDS to 30mL of distilled water, and stir continuously until a transparent solution is formed; under the condition of constant stirring, the obtained transparent solution Add it dropwise into the titanium-containing solution, and stir for 2 hours to form a mixed solution; transfer the obtained mixed solution to a 100mL polytetrafluoroethylene-lined autoclave; tighten the autoclave and put it in an oven at 150 ℃ for 12 hours; after hydrothermal treatment, the autoclave was naturally cooled to room temperature; the obtained precipitate was centrifuged, washed 3 times with distilled water, and dried at 60 ℃ for 24 hours in a blast drying oven to obtain the product; the obtained product Put it in a box-type calciner and calcinate at 450°C for 4 hours to obtain TiO 2 powder.

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Abstract

The invention relates to a method for preparing uniform spherical mesoporous titanium dioxide. The method comprises steps of dissolving TiOSO4 in hydrochloric acid solution through stirring, mixing with SDS (sodium dodecyl sulfate) solution, keeping warm for 12-18 hours at 150-180 DEG C and carrying out hydrothermal treatment, putting the obtained product into a calcinator, and calcining for 4-6 hours at 450-500 DEG C so as to obtain TiO2 powder. By taking TiOSO4 as a precursor and single SDS as template agent, the method successfully prepares spherical mesoporous TiO2 with uniform pore size distribution and narrow size distribution through the hydrothermal method, the prepared TiO2 nano material is the spherical mesoporous TiO2 with uniform pore size distribution and narrow size distribution, the crystal form of the prepared TiO2 nano material is pure anatase type, the particle size range is 20-30nm, the specific surface area is 77-92m<2> / g, and the pore diameter is about 2-3nm.

Description

technical field [0001] The invention relates to a method for preparing uniform spherical mesoporous titanium dioxide, in particular to a method for preparing spherical mesoporous titanium dioxide with uniform pore size distribution and narrow particle size distribution, and belongs to the field of preparation of inorganic semiconductor nanomaterials. Background technique [0002] Titanium dioxide is an important multifunctional inorganic material, because of its advantages of non-toxicity, low cost and high chemical stability, as well as unique photocatalytic performance, excellent color effect and ultraviolet shielding functions, it is widely used in catalyst carriers, Anti-ultraviolet absorbers, functional ceramics, gas sensor devices and other fields have broad application prospects. [0003] Currently, spherical mesoporous TiO 2 The preparation methods mainly include sol-gel method, hydrothermal method and solvothermal method. For example, Patra et al. successfully pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/053B82Y40/00
Inventor 周国伟孙彬张彦李艳
Owner 重庆牛量商贸有限公司
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