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Method for growing noble metal nanocrystals on the surface of graphene oxide

A technology of noble metal nanocrystals and graphene surfaces, which can be used in metal material coating technology, liquid chemical plating, coating, etc., and can solve the problems of lack of universality

Active Publication Date: 2015-12-16
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Looking at the methods that have been reported in the literature, most of them are only suitable for the preparation of graphene oxide supported by a specific noble metal nanocrystal, which lacks universality.

Method used

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  • Method for growing noble metal nanocrystals on the surface of graphene oxide
  • Method for growing noble metal nanocrystals on the surface of graphene oxide
  • Method for growing noble metal nanocrystals on the surface of graphene oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: grow gold nanocrystal on graphene oxide surface

[0032] a) Measure 10 ml of oleylamine and stir at 120° C. for 10 minutes;

[0033] b) adding 0.1 gram of graphene oxide and stirring for 30 minutes, so that graphene oxide is evenly dispersed in oleylamine;

[0034] c) add 0.04 gram of chloroauric acid tetrahydrate (HAuCl 4 4H 2 O), continue to stir and react for 10 minutes;

[0035] d) raising the temperature to 180°C, and continuing to stir and react at 180°C for 10 minutes;

[0036] e) The product was centrifuged at high speed (12000rpm, relative centrifugal force about 13000×g) for 5 minutes to separate the solid product from oleylamine, and washed the product three times with 30 ml of n-hexane;

[0037] f) drying the product under air to obtain a graphene oxide product with gold nanocrystal support.

[0038] The product prepared by the above steps was characterized by a transmission electron microscope. The results showed that a large number of go...

Embodiment 2

[0039] Embodiment 2: grow silver nanocrystals on the surface of graphene oxide

[0040] a) Measure 10 ml of oleylamine and stir at 120° C. for 10 minutes;

[0041] b) adding 0.1 gram of graphene oxide and stirring for 30 minutes, so that graphene oxide is evenly dispersed in oleylamine;

[0042] c) Add 0.02 grams of silver nitrate (AgNO 3 ), continue to stir and react for 10 minutes;

[0043] d) raising the temperature to 180°C, and continuing to stir and react at 180°C for 10 minutes;

[0044] e) continue to raise the temperature to 220°C, and continue to stir and react at 220°C for 10 minutes;

[0045] f) The product was centrifuged at high speed (12000rpm, relative centrifugal force about 13000×g) for 5 minutes to separate the solid product from oleylamine, and washed the product three times with 30 ml of n-hexane;

[0046] g) drying the product under air to obtain a graphene oxide product with silver nanocrystal loading.

[0047] The product prepared by the above step...

Embodiment 3

[0048] Embodiment 3: grow palladium nanocrystal on graphene oxide surface

[0049] a) Measure 10 ml of oleylamine and stir at 120° C. for 10 minutes;

[0050] b) adding 0.1 gram of graphene oxide and stirring for 30 minutes, so that graphene oxide is evenly dispersed in oleylamine;

[0051] c) add 0.02 gram of palladium chloride (PdCl 2 ), continue to stir and react for 10 minutes;

[0052] d) raising the temperature to 180°C, and continuing to stir and react at 180°C for 10 minutes;

[0053] e) continue to raise the temperature to 220°C, and continue to stir and react at 220°C for 10 minutes;

[0054] f) The product was centrifuged at high speed (12000rpm, relative centrifugal force about 13000×g) for 5 minutes to separate the solid product from oleylamine, and washed the product three times with 30 ml of n-hexane;

[0055] g) drying the product under air to obtain a graphene oxide product with palladium nanocrystal loading.

[0056] The product prepared by the above steps...

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Abstract

The invention relates to a method for growing a noble metal nanocrystal on a graphene oxide surface. The method comprises the following steps: by virtue of using oleylamine (Oleylamine with CAS number of 112-90-3) as a reaction solvent and a reducing agent in a reaction system, reducing a noble metal precursor to the noble metal nanocrystal on a graphene material surface modified by an oxygen-containing group (such as hydroxyl, carboxyl, carbonyl and epoxy), and manufacturing a graphene oxide material loaded with the noble metal nanocrystal. The method has the advantages of clear principle, advanced method, easiness for operation, low manufacturing cost and suitable for a variety of noble metals and batch production.

Description

technical field [0001] The invention relates to a method for growing noble metal nanocrystals on the surface of graphene oxide, belonging to the field of nano functional material manufacturing. Background technique [0002] Since Andre Geim (Andre Geim) and Konstantin Novoselov (Konstantin Novoselov) first reported the preparation of graphene in "Science" magazine in 2004 (Science, 2004, volume 306, 666-669 pages), graphene and graphene derivatives (such as graphene oxide and hydrogenated graphene, etc.) have shown excellent characteristics in optical, electrical, mechanical and thermal properties, so they have attracted people's attention. Research is booming (Graphene: Structure, Preparation Methods and Characterization of Properties / Zhu Hongwei, Xu Zhiping, Xie Dan, etc. Beijing: Tsinghua University Press, 2011.11). [0003] According to literature reports, the theoretical specific surface area of ​​graphene is as high as 2630 square meters per gram (Journal of Inorganic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/44C04B35/628
Inventor 许鹏程于海涛李昕欣徐铁刚
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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