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Three-dimensional titanium fluoride-based organic self-assembly complex for in-situ growth of titanium oxide as well as preparation method and application of three-dimensional titanium fluoride-based organic self-assembly complex

A technology of three-dimensional titanium fluoride and titanium oxide, which is applied in organic compound/hydride/coordination complex catalysts, chemical instruments and methods, water treatment of special compounds, etc., can solve problems such as instability, achieve low cost, Good adsorption activity and enhanced photocatalytic activity

Pending Publication Date: 2022-06-14
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it is necessary to combine titanium dioxide and fluorine-functionalized three-dimensional titanium-based organic self-assembly complexes, traditional composite materials are often combined through weak van der Waals forces or hydrogen bond interactions, which are often unstable.

Method used

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  • Three-dimensional titanium fluoride-based organic self-assembly complex for in-situ growth of titanium oxide as well as preparation method and application of three-dimensional titanium fluoride-based organic self-assembly complex
  • Three-dimensional titanium fluoride-based organic self-assembly complex for in-situ growth of titanium oxide as well as preparation method and application of three-dimensional titanium fluoride-based organic self-assembly complex
  • Three-dimensional titanium fluoride-based organic self-assembly complex for in-situ growth of titanium oxide as well as preparation method and application of three-dimensional titanium fluoride-based organic self-assembly complex

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In the present embodiment, the specific steps for preparing the synthesized three-dimensional titanium fluoride-based organic self-assembled complex of in-situ grown titanium oxide are as follows:

[0024] 1) Disperse 2492.0 mg of terephthalic acid uniformly in 5 mL of methanol and 45 mL of N,N-dimethylformamide (DMF), then add 1.3 mL of titanium tetraisopropoxide, and stir to make the solution uniform;

[0025] 2) Then the solution was transferred into a reaction kettle with 100 mL of polytetrafluoroethylene lining, heated in a forced air drying oven at 150 ° C for 15 h, cooled to room temperature, and centrifuged, and then washed with N,N-dimethylformamide and After washing with methanol three times, it was kept under vacuum at 60 °C for 24 h, and white powder was obtained by grinding, namely three-dimensional titanium-based organic self-assembled complexes;

[0026] 3) 60 mg of the obtained powder three-dimensional titanium-based organic self-assembled complex, 10 mg...

Embodiment 2

[0028] 1) Disperse 2492.0 mg of terephthalic acid uniformly in 5 mL of methanol and 45 mL of N,N-dimethylformamide (DMF), then add 1.3 mL of titanium tetraisopropoxide, and stir to make the solution uniform;

[0029] 2) Then the solution was transferred into a reaction kettle with 100 mL of polytetrafluoroethylene lining, heated in a forced air drying oven at 150 ° C for 15 h, cooled to room temperature, and centrifuged, and then washed with N,N-dimethylformamide and After washing with methanol three times, it was kept under vacuum at 60 °C for 24 h, and white powder was obtained by grinding, namely three-dimensional titanium-based organic self-assembled complexes;

[0030] 3) 60 mg of the obtained powder three-dimensional titanium-based organic self-assembly complex, 20 mg of sodium fluoride and 100 mg of tannic acid were added to 60 mL of ultrapure water, and the suspension was transferred to a reaction kettle with 100 mL of polytetrafluoroethylene lining, Heating in an oven...

Embodiment 3

[0032] 1) Disperse 2492.0 mg of terephthalic acid uniformly in 5 mL of methanol and 45 mL of N,N-dimethylformamide (DMF), then add 1.3 mL of titanium tetraisopropoxide, and stir to make the solution uniform;

[0033] 2) Then the solution was transferred into a reaction kettle with 100 mL of polytetrafluoroethylene lining, heated in a forced air drying oven at 150 ° C for 15 h, cooled to room temperature, and centrifuged, and then washed with N,N-dimethylformamide and After washing with methanol three times, it was kept under vacuum at 60 °C for 24 h, and white powder was obtained by grinding, namely three-dimensional titanium-based organic self-assembled complexes;

[0034] 3) 60 mg of the obtained powder three-dimensional titanium-based organic self-assembled complex, 50 mg of sodium fluoride and 120 mg of tannic acid were added to 60 mL of ultrapure water, and the suspension was transferred to a reaction kettle with 100 mL of polytetrafluoroethylene lining, Heating in an ove...

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Abstract

The invention discloses a three-dimensional titanium fluoride-based organic self-assembly complex for in-situ growth of titanium oxide and a preparation method and application thereof.The preparation method comprises the steps that terephthalic acid is evenly dispersed in methyl alcohol and N, N-dimethylformamide, then titanium tetraisopropylate is added, and the mixture is stirred to make the solution uniform; and transferring the solution into a reaction kettle, heating in a blowing-type drying oven, cooling to room temperature, centrifuging, washing, keeping for 12-72 hours at 50-120 DEG C in vacuum, grinding to obtain white powder, adding the powder three-dimensional titanium-based organic self-assembly complex, sodium fluoride and tannic acid into ultrapure water, transferring suspension into the reaction kettle with a polytetrafluoroethylene lining, and drying to obtain the three-dimensional titanium-based organic self-assembly complex. And heating in a drying oven, cooling to room temperature, centrifuging, thoroughly washing with ultrapure water for 4 times, drying and grinding to obtain the three-dimensional titanium fluoride-based organic self-assembly complex for in-situ growth of the titanium oxide. According to the method, the photocatalytic activity of the material can be improved through in-situ growth of the titanium oxide, and the adsorption performance of the material on perfluorinated pollutants is improved through fluorination.

Description

technical field [0001] The invention belongs to the field of material preparation, and in particular relates to a three-dimensional titanium fluoride-based organic self-assembled complex for in-situ growth of titanium oxide and a preparation method and application thereof Background technique [0002] Three-dimensional titanium-based organic self-assembled complexes possess abundant pore structures, large specific surface areas, and diverse functions, and exhibit superior performance in the adsorption of pollutants in water. However, due to the hydrophobicity, oleophobicity, thermal stability and stubbornness of perfluorinated pollutants, they can be transported over long distances in air and water, and repairing and removing such pollutants has become a major problem. In view of the problem that traditional adsorbents are difficult to efficiently remove perfluorinated pollutants, the method of introducing fluorine groups into the material can be used to form strong molecula...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/30B01J31/38C02F1/28C02F1/32C02F1/72C02F101/34C02F101/36
CPCB01J20/06B01J20/223B01J31/38C02F1/288C02F1/32C02F1/725C02F2305/10C02F2101/34C02F2101/36B01J35/39Y02W10/37
Inventor 沈意许俊杰朱超陈秀婷孔正何志桥宋爽
Owner ZHEJIANG UNIV OF TECH
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