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TiO2-loaded graphene oxide sheet layer material and preparation method thereof

A graphene sheet, graphene technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve the problems of unsatisfactory improvement and limitation of agglomeration, and achieve the effect of easy operation and simple preparation process

Inactive Publication Date: 2016-01-27
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] But in graphene oxide and TiO 2 During the preparation of composite materials, mechanical stirring is often used to mix TiO 2 Loaded on graphene oxide, although this method is simple, it is difficult for the stacked sheets of graphene oxide and TiO 2 The improvement of the agglomeration is not ideal enough, and these defects limit its application

Method used

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  • TiO2-loaded graphene oxide sheet layer material and preparation method thereof
  • TiO2-loaded graphene oxide sheet layer material and preparation method thereof
  • TiO2-loaded graphene oxide sheet layer material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A kind of TiO 2 The preparation method of loaded graphene oxide sheet material comprises the following steps:

[0026] (1) Preparation of graphene oxide (GO)

[0027] Mix 1g of natural graphite and 24mL of 98% concentrated sulfuric acid, stir in an ice-water bath for 30min, then add 1g of sodium nitrate, 5g of potassium permanganate, stir for 1.5h, raise the temperature to 39°C for 2h, then add 41mL of deionized water, 95°C Stir for 1 h, then add 120 mL of 10% hydrogen peroxide, react for 30 min, continue to add 5 mL of hydrochloric acid, centrifuge, wash the solid matter with deionized water and absolute ethanol for 5 times, and finally, dry the solid in a vacuum oven at 60°C for 24 h. Obtain graphene oxide;

[0028] (2) Modified TiO 2 (f-TiO 2 )preparation

[0029] Weigh 0.1g nano-TiO 2 Ultrasonic disperse 4g KH550 in 100g absolute ethanol for 30min, add 14g distilled water, stir and react at 78°C for 6h, centrifuge and filter, wash the solid matter repeatedly w...

Embodiment 2

[0033] A kind of TiO 2 The preparation method of loaded graphene oxide sheet material comprises the following steps:

[0034] (1) Preparation of graphene oxide (GO)

[0035] Mix 1g of natural graphite and 24mL of 98% concentrated sulfuric acid, stir in an ice-water bath for 30min, then add 1g of sodium nitrate, 5g of potassium permanganate, stir for 1.5h, raise the temperature to 39°C for 2h, then add 41mL of deionized water, 95°C Stir for 1 h, then add 120 mL of 10% hydrogen peroxide, react for 30 min, continue to add 5 mL of hydrochloric acid, centrifuge, wash the solid matter with deionized water and absolute ethanol for 5 times, and finally, dry the solid in a vacuum oven at 60°C for 24 h. Obtain graphene oxide;

[0036] (2) Modified TiO 2 (f-TiO 2 )preparation

[0037] Weigh 0.1g nano-TiO 2 Ultrasonic disperse 4g KH550 in 100g absolute ethanol for 30min, add 14g distilled water, stir and react at 78°C for 6h, centrifuge and filter, wash the solid matter repeatedly w...

Embodiment 3

[0041] A kind of TiO 2 The preparation method of loaded graphene oxide sheet material comprises the following steps:

[0042] (1) Preparation of graphene oxide (GO)

[0043] Mix 1g of natural graphite and 24mL of 98% concentrated sulfuric acid, stir in an ice-water bath for 30min, then add 1g of sodium nitrate, 5g of potassium permanganate, stir for 1.5h, raise the temperature to 39°C for 2h, then add 41mL of deionized water, 95°C Stir for 1 hour, then add 120 mL of 10% hydrogen peroxide, react for 30 minutes, continue to add 5 mL of hydrochloric acid, centrifuge, wash the solid matter with deionized water and absolute ethanol for 5 times, and finally, dry the solid in a vacuum oven at 60°C for 24 hours. Obtain graphene oxide;

[0044] (2) Modified TiO 2 (f-TiO 2 )preparation

[0045] Weigh 0.1g nano-TiO 2 Ultrasonic disperse 4g KH550 in 100g absolute ethanol for 30min, add 14g distilled water, stir and react at 78°C for 6h, centrifuge and filter, wash the solid matter r...

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Abstract

The invention discloses a TiO2-loaded graphene oxide sheet layer material. A preparation method of the TiO2-loaded graphene oxide sheet layer material comprises the following steps of 1 graphene oxide preparing; 2 modified TiO2 preparing; 3 TiO2-GO preparing, wherein 0.05 g of modified TiO2 is weighed and added into 100 mL of DMF, ultrasonic dispersion is performed for 15 min, graphene oxide is continuously added, ultrasonic dispersion is performed for 15 min, stirring reacting is performed at 105 DEG C for 5 h, centrifugation is performed, solid matter is washed with absolute ethyl alcohol, the solid is placed in a 60-DEG C vacuum oven to be dried for 24 h, grinding is performed to obtain the TiO2-loaded graphene oxide sheet layer material, and the weight ratio of the added modified TiO2 to the graphene oxide is 1:2-5. The product prepared through the preparation method has the better compatibility and dispersibility when the product is applied to an epoxy coating.

Description

technical field [0001] The invention belongs to the technical field of material chemistry, and in particular relates to a TiO 2 Supported graphene oxide sheet material and preparation method thereof. Background technique [0002] With the emergence of diamond, graphite (three-dimensional), fullerene (zero-dimensional), and carbon nanotubes (one-dimensional), graphene was first discovered by Geim et al. in 2004 and became the fifth allotrope of carbon. is composed of carbon atoms sp 2 The real two-dimensional atomic crystal formed by hybridization is also the thinnest material known in the world, with a thickness of only 0.334nm. Graphene has a large specific surface area, which can significantly improve the adsorption capacity of various organic substances. In addition, graphene also possesses unique electronic properties, such as high electron mobility, which are expected to serve as effective carriers of photogenerated electrons in photocatalytic processes. The researc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/047
Inventor 何毅马瑜第海辉余宗学施太和曾广勇潘洋陈奇
Owner SOUTHWEST PETROLEUM UNIV
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