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Preparation method of titanium dioxide and graphene oxide compound with controllable grain size

A technology of titanium dioxide and graphene, applied in the field of material chemistry, can solve problems such as compounding, achieve good compounding, simple and easy-to-operate experimental methods, and accurate and controllable particle size

Active Publication Date: 2018-06-19
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing a composite of titanium dioxide and graphene oxide with controllable particle size, which effectively solves the problem of controllable particle size of titanium dioxide and simultaneously solves the problem of compounding graphene oxide and titanium dioxide

Method used

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  • Preparation method of titanium dioxide and graphene oxide compound with controllable grain size
  • Preparation method of titanium dioxide and graphene oxide compound with controllable grain size
  • Preparation method of titanium dioxide and graphene oxide compound with controllable grain size

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Weigh 2ml of isopropyl titanate, 0.04g of graphene oxide, mix with 40ml of ethanol to form an alcohol solution of titanium source and graphene oxide, the volume ratio of isopropyl titanate and ethanol is 1:20, The mass ratio of isopropyl titanate to graphene oxide is 1:0.02, and the mixed alcohol solution is pretreated: the ultrasonic time is 10 min, and the stirring time is 10 min. Dry the alcohol in the mixed solution with high-purity nitrogen gas at a flow rate of 100ml / min for 24h. After drying the alcohol solution, continue to feed the mixed gas flow of nitrogen carrying water vapor, wherein the temperature of the water vapor is 30 degrees Celsius, the total flow rate of the mixed gas flow is 300ml / min, and the feeding time is 20h, so that the titanium source is fully hydrolyzed. The hydrolyzed product was burned at 500°C for 1 hour to obtain composite sample 1# of titanium dioxide and graphene oxide.

[0053] The composite sample 1# of titanium dioxide and graphe...

Embodiment 2

[0055] Weigh 2ml of isopropyl titanate, 0.06g of graphene, mix with 10ml of ethanol to form an alcohol solution of titanium source and graphene, the volume ratio of isopropyl titanate and ethanol is 1:5, titanate The mass ratio of isopropyl ester to graphene is 1:0.03, and the mixed alcohol solution is pretreated: the ultrasonic time is 30 min, and the stirring time is 30 min. Dry the alcohol in the mixed solution with high-purity nitrogen at a flow rate of 2 L / min for 5 hours. After drying the alcohol solution, continue to feed the mixed gas flow of nitrogen carrying water vapor, the temperature of the water vapor is 50 degrees Celsius, the total flow rate of the mixed gas flow is 2L / min, and the feeding time is 0.1h, so that the titanium source is fully hydrolyzed. The hydrolyzed product was burned at 500°C for 5 hours to obtain composite sample 2# of titanium dioxide and graphene oxide.

[0056] The composite sample 2# of titanium dioxide and graphene oxide was analyzed by...

Embodiment 3

[0058] Weigh 2ml tetrabutyl titanate, 0.1g graphene oxide, and mix with 80ml ethanol to form an alcohol solution of titanium source and graphene oxide. The volume ratio of tetrabutyl titanate and ethanol added is 1:40. The mass ratio of tetrabutyl titanate to graphene oxide is 1:0.05, and the mixed alcohol solution is pretreated: the ultrasonic time is 50 min, and the stirring time is 1 h. Dry the alcohol in the mixed solution with high-purity argon at a flow rate of 1 ml / min for 48 hours. After drying the alcohol solution, continue to feed the mixed gas flow of argon carrying water vapor, the temperature of the water vapor is 70 degrees Celsius, the total flow rate of the mixed gas flow is 1ml / min, and the feeding time is 30h, so that the titanium source is fully hydrolyzed. The hydrolyzed product was burned at 700°C for 0.5h to obtain composite sample 3# of titanium dioxide and graphene oxide.

[0059] The composite sample 3# of titanium dioxide and graphene oxide was analy...

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Abstract

The invention provides a titanium dioxide and graphene oxide compound with controllable grain size and a preparation method of the compound. The preparation method comprises steps as follows: 1) a titanium source, a carbon source and alcohol are mixed; 2) alcohol in the mixture obtained in the step 1) is blow-dried in the inert gas atmosphere; 3) a product obtained in the step 2) is hydrolyzed under the condition of inert gas containing water vapor, and a hydrolysis product is burnt. The preparation method is simple to operate and high in controllability, and the titanium dioxide and grapheneoxide compound with uniform grain size distribution, closely compounded titanium dioxide and graphene oxide and controllable grain size and shape can be prepared.

Description

technical field [0001] The invention belongs to the field of material chemistry, and in particular relates to a preparation method of a titanium dioxide and graphene oxide compound with a controllable particle size. Background technique [0002] Nano-titanium dioxide powder is non-toxic, has high catalytic activity, strong oxidation ability, and good chemical corrosion resistance. It is an excellent photocatalyst, gas sensor for sensors, catalyst carrier or adsorbent, and is also an important raw material for functional ceramics and advanced coatings. The preparation of nanoparticles has the following requirements: smooth surface, controllable particle shape, particle size, and particle size distribution, particles are not easy to agglomerate, easy to collect, excellent thermal stability, and high yield. [0003] Graphene oxide is a graphite interlayer compound with covalent bonds, that is, a layered covalent compound. Due to its many excellent properties, such as excellent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/053C01B32/198B82Y30/00
CPCB82Y30/00C01G23/053C01P2002/72C01P2002/82C01P2004/04C01P2004/64C01P2004/80
Inventor 马翠杰陈为孙予罕张佳舟王白银南贵珍
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI