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Graphene oxide-anatase type nanometer titanium dioxide composite modified sol and preparation thereof

A nano-titanium dioxide and anatase-type technology, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of inability to achieve titanium dioxide preparation, too fast reaction, etc. problems, to achieve superior mechanical, thermal and electrical performance, excellent proportioning effect, and increase the effect of application prospects

Pending Publication Date: 2021-08-13
SHANGHAI INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The defect of the synthesis of titanium dioxide in this technical scheme is that there is no acid protective agent, the reaction is too fast, and the preparation of nano-scale titanium dioxide cannot be realized.

Method used

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  • Graphene oxide-anatase type nanometer titanium dioxide composite modified sol and preparation thereof
  • Graphene oxide-anatase type nanometer titanium dioxide composite modified sol and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Pour a certain amount of absolute ethanol into a three-necked flask, weigh 8.5 g of tetrabutyl titanate, add it to absolute ethanol, and ultrasonically disperse for 0.5 h to obtain solution A.

[0033] (2) Pour a certain amount of absolute ethanol into the beaker, add 5 mg of graphene oxide into the beaker, and ultrasonically disperse for 0.5 h to obtain graphene oxide ethanol suspension B.

[0034] (3) Add a certain amount of ethanol into the beaker, add 1.35ml of deionized water, add 1.5ml of 36-38% hydrochloric acid, stir evenly, and obtain solution C.

[0035] (4) Pour the suspension B into the three-necked flask in the step (1), and then slowly titrate the solution C into the AB mixed liquid after magnetic stirring for 0.5h. 0.5h after the end of the magnetic stirring reaction to obtain the precursor.

[0036] (5) Add 0.575ml of KH-570 dropwise to the three-necked flask obtained from the precursor for modification, control the temperature of the water bath at ...

Embodiment 2

[0040] (1) Pour a certain amount of absolute ethanol into a three-necked flask, weigh 8.5 g of tetrabutyl titanate, add it to absolute ethanol, and ultrasonically disperse for 0.5 h to obtain solution A.

[0041] (2) Pour a certain amount of absolute ethanol into the beaker, add 5 mg of graphene oxide into the beaker, and ultrasonically disperse for 0.5 h to obtain graphene oxide ethanol suspension B.

[0042] (3) Add a certain amount of ethanol into the beaker, add 1.80ml of deionized water, add 1.5ml of 36-38% hydrochloric acid, stir evenly, and obtain solution C.

[0043] (4) Pour the suspension B into the three-necked flask in the step (1), and then slowly titrate the solution C into the AB mixed liquid after magnetic stirring for 0.5h. 0.5h after the end of the magnetic stirring reaction to obtain the precursor.

[0044] (5) Add 0.575ml of KH-570 dropwise to the three-necked flask obtained from the precursor for modification, control the temperature of the water bath at ...

Embodiment 3

[0048] (1) Pour a certain amount of absolute ethanol into a three-necked flask, weigh 8.5 g of tetrabutyl titanate, add it to absolute ethanol, and ultrasonically disperse for 0.5 h to obtain solution A.

[0049] (2) Pour a certain amount of absolute ethanol into the beaker, add 5 mg of graphene oxide into the beaker, and ultrasonically disperse for 0.5 h to obtain graphene oxide ethanol suspension B.

[0050] (3) Add a certain amount of ethanol into the beaker, add 2.25ml of deionized water, add 1.5ml of 36-38% hydrochloric acid, stir evenly, and obtain solution C.

[0051] (4) Pour the suspension B into the three-necked flask in the step (1), and then slowly titrate the solution C into the AB mixed liquid after magnetic stirring for 0.5h. 0.5h after the end of the magnetic stirring reaction to obtain the precursor.

[0052] (5) Add 0.575ml of KH-570 dropwise to the three-necked flask obtained from the precursor for modification, control the temperature of the water bath at ...

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Abstract

The invention relates to graphene oxide-anatase type nanometer titanium dioxide composite modified sol and a preparation method thereof. The preparation method comprises the following steps: adding tetrabutyl titanate into absolute ethyl alcohol, and carrying out ultrasonic dispersion to prepare a solution A; putting graphene oxide into an absolute ethyl alcohol solution, and carrying out ultrasonic dispersion to prepare a suspension B; mixing hydrochloric acid, absolute ethyl alcohol and deionized water to prepare a solution C; and subjecting the solution A and the suspension B to mixing and magnetic stirring, slowly adding the solution C into a mixed liquid of the solution A and the suspension B for a stirring reaction, dropwise adding a modification reagent at the same time, and finally, conducting a heating stirring reaction so as to obtain the graphene oxide-anatase type nanometer titanium dioxide composite modified sol. Compared with the prior art, the modified sol is uniform in particle size dispersion, light in color and wide in application field; and the prepared titanium dioxide has an obvious spectrum shift phenomenon, titanium dioxide crystals are in an anatase type, and the titanium dioxide can be applied to compounding of photocatalytic antibacterial coatings.

Description

technical field [0001] The invention relates to the field of nanomaterial preparation, in particular to a graphene oxide-anatase nano-titanium dioxide composite modified sol and its preparation. Background technique [0002] With the continuous development of industrial production, and society's requirements for the environment are getting higher and higher. Photocatalytic technology has made major breakthroughs in various fields of the environment in recent years. As a photocatalytic material, titanium dioxide has high chemical stability, good catalytic activity, non-toxic and harmless to human body, and has a wide range of applications. In industrial production and life, it is often used to treat organic pollutants, cosmetics production, antibacterial and bactericidal materials, battery electrode materials, etc. The applications in these fields mostly come from the optical properties of titanium dioxide. Titanium dioxide is divided into three crystal types, rutile, anata...

Claims

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Application Information

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IPC IPC(8): B01J21/18B01J31/02
CPCB01J21/18B01J31/0274B01J31/0275B01J35/23B01J35/40B01J35/39
Inventor 郑义杨旭琨付彦榕张梦成
Owner SHANGHAI INSTITUTE OF TECHNOLOGY
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