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Fluoride-free preparation method of titanium dioxide of similar graphene structure

A titanium dioxide and graphene technology, applied in the field of new energy materials and nanomaterials, can solve the problem of high carbonization temperature, and achieve the effects of large size area, high yield and controllable reaction conditions

Inactive Publication Date: 2015-05-20
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the preparation of graphene usually requires a long and complicated process of exfoliating graphite and requires a very high carbonization temperature.

Method used

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  • Fluoride-free preparation method of titanium dioxide of similar graphene structure
  • Fluoride-free preparation method of titanium dioxide of similar graphene structure
  • Fluoride-free preparation method of titanium dioxide of similar graphene structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment includes the following steps:

[0027] 1) Add 5.25g TTIP to 3.75g concentrated hydrochloric acid with a mass fraction of 37%, and stir for 15min;

[0028] 2) Add 1g of Pluronic P123 to 15g of ethanol and stir for 30min; then add it to the mixture obtained in step 1 and stir for 30min;

[0029] 3) Take 20mL of the mixture obtained in step 2, add it to a beaker filled with 150mL of ethylene glycol, and stir for 30min;

[0030] 4) Pour the mixed solution obtained in the above step 3 into the reaction kettle, heat-treat at 150°C, and keep it warm for 12 hours. The obtained product is centrifuged, washed repeatedly with deionized water and absolute ethanol for 3 times, and dried in a drying oven at 60°C to obtain Titanium dioxide with a graphene-like structure.

[0031] Such as Figure 1 ~ Figure 3 As shown, the effect of the titanium dioxide prepared in this embodiment is: the prepared titanium dioxide has a graphene ultra-thin nanosheet structure, the si...

Embodiment 2

[0033] This embodiment includes the following steps:

[0034] 1) Add 5.25g TTIP to 3.75g concentrated hydrochloric acid with a mass fraction of 37%, and stir for 15min;

[0035] 2) Add 0.5g of Pluronic P123 to 15g of ethanol, stir for 30min; then add to the mixture obtained in step 1 and stir for 30min;

[0036] 3) Take 20mL of the mixture obtained in step 2, add it to a beaker filled with 50mL of ethylene glycol, and stir for 30min;

[0037] 4) Pour the above solution into the reaction kettle, heat-treat at 100°C, and keep it warm for 12 hours. The obtained product is centrifuged, washed repeatedly with deionized water and absolute ethanol for 3 times, and dried in a drying oven at 60°C to obtain graphene-like Structure of titanium dioxide.

Embodiment 3

[0039] This embodiment includes the following steps:

[0040] 1) Add 5.25g TTIP to 3.75g concentrated hydrochloric acid with a mass fraction of 37%, and stir for 15min;

[0041] 2) Add 1.5g of Pluronic P123 to 15g of ethanol, stir for 30min; then add to the mixture obtained in step 1 and stir for 30min;

[0042] 3) Take 20mL of the mixture obtained in step 2, add it to a beaker filled with 100mL of ethylene glycol, and stir for 30min;

[0043] 4) Pour the above solution into a reaction kettle, heat-treat at 200°C, and keep warm for 12 hours. The obtained product is centrifuged, washed repeatedly with deionized water and absolute ethanol for 3 times, and dried in a drying oven at 60°C to obtain a graphene-like Structure of titanium dioxide.

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Abstract

The invention provides a fluoride-free preparation method of titanium dioxide of a similar graphene structure and belongs to the technical field of nanomaterial preparation. The material is composed of titanium dioxide nanosheets having the size of greater than 500nm. The preparation method mainly comprises the following steps: by taking ethylene glycol and ethanol as reaction solvents, inhibiting quick decomposition of titanium isopropylate by use of concentrated hydrochloric acid under the action Pluronic P123, performing a solvothermal reaction, growing micro flake titanium dioxide by virtue of self-assembly, and further growing to obtain titanium dioxide having a large area and an ultra-thin similar graphene structure. According to the preparation method, titanium dioxide having the large area and the ultra-thin similar graphene structure is synthesized for the first time and can be widely applied to photo / electro / chemocatalysis, the electrode materials of new energy batteries and the like.

Description

technical field [0001] The invention relates to a technology in the field of nanometer materials and new energy materials, in particular to a fluorine-free preparation method of titanium dioxide with a graphene-like structure. Background technique [0002] Rational design of the structure and morphology of nanomaterials has an important impact on its performance and application, especially in the energy environment, such as solar cells, photocatalysis, supercapacitors and other fields. Therefore, building and designing nanomaterials through reasonable methods is becoming more and more important. more and more attention. Two-dimensional nanomaterials—graphene, have high charge mobility, good mechanical flexibility and optical transparency, high chemical stability, excellent electrical conductivity, Thermal conductivity has shown broad application prospects in photocatalysis, lithium-ion batteries, supercapacitors, solar cells, biosensors, etc. As a two-dimensional inorganic...

Claims

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Application Information

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IPC IPC(8): C01G23/053B82Y40/00
CPCC01G23/053C01P2002/70C01P2004/04C01P2004/24
Inventor 毕恩兵何金金陈汉杨旭东韩礼元
Owner SHANGHAI JIAO TONG UNIV
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