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Synthetic method of 3-aminopropyltriethoxysilane modified graphene oxide

A technology of aminopropyltriethoxysilane and its synthesis method, which is applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve the problems of long reaction time, high cost, and high energy consumption, and achieve shortened reaction cycle, Effect of avoiding use of ethanol

Inactive Publication Date: 2018-03-02
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ma Wenshi and Zhou Junwen disclosed a 3-aminopropyltriethoxysilane modified oxidation The method of graphene, the method is to disperse graphene oxide in ethanol-water mixed solvent, then add 3-aminopropyltriethoxysilane, stir at room temperature for 24h; Zhang Danfeng and Fan Louzhen et al. 2014, 35(11): 2466~2471 "Thermal Stability of Graphene Oxide / Polybutyl Methacrylate Composite Materials" discloses a method for modifying graphene oxide with 3-aminopropyltriethoxysilane , the method is to disperse graphene oxide in ethanol, then add the 3-aminopropyltriethoxysilane / ethanol mixture into the graphene oxide / ethanol dispersion, and prepare it by reflux reaction for 6h. The above two methods all exist Problems such as the use of organic solvents and long reaction times lead to high costs, long reaction cycles, and high energy consumption

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Synthesis of 3-aminopropyltriethoxysilane modified graphene oxide

[0017] Add 20mg of graphene oxide to 10mL of water, and ultrasonically disperse for 0.5h at a temperature of 30℃, then add 60mg of 3-aminopropyltriethoxysilane and 15mg of 10% hydrochloric acid, and react at a temperature of 35℃ for 1.0 h, centrifuge, wash, and dry to obtain 30 mg of black powder 3-aminopropyltriethoxysilane modified graphene oxide.

[0018] Structure Identification:

[0019] 1. Infrared analysis

[0020] In the infrared spectrum of the target compound 3-aminopropyltriethoxysilane modified graphene oxide, it can be seen that there is 1740cm in the graphite oxide -1 The carbonyl stretching vibration absorption peak at the position has been moved to 1636cm -1 At 1539cm -1 The N-H flexural vibration absorption peak can also indicate the formation of amide bond, that is, the amino group in 3-aminopropyltriethoxysilane and the carboxyl group in graphite oxide form an amide bond. 1248cm in the corre...

Embodiment 2

[0022] Synthesis of 3-aminopropyltriethoxysilane modified graphene oxide

[0023] Add 20mg of graphene oxide to 10mL of water, ultrasonically disperse for 0.5h at a temperature of 30℃, then add 60mg of 3-aminopropyltriethoxysilane and 15mg of 10% sulfuric acid, and react at a temperature of 30℃ for 1.0 h, centrifuge, wash, and dry to obtain 29 mg of black powder 3-aminopropyltriethoxysilane modified graphene oxide.

Embodiment 3

[0025] Synthesis of 3-aminopropyltriethoxysilane modified graphene oxide

[0026] Add 20mg of graphene oxide to 11mL of water, ultrasonically disperse for 1.0h at a temperature of 30℃, then add 70mg of 3-aminopropyltriethoxysilane and 40mg of 10% hydrochloric acid, and react at a temperature of 40℃ for 1.0 h, centrifuge, wash, and dry to obtain 28 mg of black powder 3-aminopropyltriethoxysilane modified graphene oxide.

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Abstract

The invention discloses a synthetic method of 3-aminopropyltriethoxysilane modified graphene oxide, which solves the problems of long reaction time and usage of an organic solvent in the prior art. The method is characterized in that graphene oxide is added in water, the mass ratio of graphene oxide to water is 1.0-3.0:800-1200, ultrasonic dispersion is carried out for 0.3 h-1.2 h at the temperature in a scope of 25-35 DEG C, 3-aminopropyltriethoxysilane and a catalyst are added, the mass ratio of graphene oxide to water to 3-aminopropyltriethoxysilane to the catalyst is 1.0-3.0:800-1200:5.0-10.0:0.5-3.0, the materials are stirred for a reaction for 0.5-1.5 h at the temperature of the scope of 30-45 DEG C, and steps of centrifugation, washing and drying to obtain the black powder 3-aminopropyltriethoxysilane modified graphene oxide.

Description

Technical field [0001] The invention relates to a method for synthesizing 3-aminopropyltriethoxysilane modified graphene oxide, which belongs to the field of organic synthesis. Background technique [0002] Graphene oxide is an important graphene derivative with unique uses in the field of composite materials. There are a large number of oxygen-containing groups on the surface, such as hydroxyl, carboxyl, epoxy, etc., which can be functionalized on the surface of graphene oxide by covalent or non-covalent methods to obtain functionalized graphene oxide. The latter modified graphene oxide can form forces with polymers such as rubber, polyvinyl alcohol, chitosan, etc., to modify the properties of polymer materials, and also to interact with nano-metal oxides for solar cells. [0003] 3-Aminopropyltriethoxysilane is an important siloxane compound. The amino and alkoxy groups in the molecule can react with the functional groups on the surface of graphene oxide to form 3-aminopropyltri...

Claims

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Application Information

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IPC IPC(8): C01B32/198
Inventor 汪营磊汪伟丁峰姬月萍陈斌高福磊朱勇闫峥峰
Owner XIAN MODERN CHEM RES INST