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Preparation method of graphene-loaded copper nanoparticle

A graphene and copper nanotechnology, applied in chemical instruments and methods, catalyst activation/preparation, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as harsh experimental conditions, and achieve the effect of reducing variables

Inactive Publication Date: 2018-10-12
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problems in the above method are: various reducing agents need to be used, various harsh experimental conditions are required

Method used

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  • Preparation method of graphene-loaded copper nanoparticle
  • Preparation method of graphene-loaded copper nanoparticle
  • Preparation method of graphene-loaded copper nanoparticle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Weigh 10ml of the prepared saturated aqueous solution of copper nitrate and copper acetate salt with a measuring cylinder, add them into 0.5g of graphene oxide obtained after freeze-drying, ultrasonicate for 1h, and then magnetically stir at room temperature for 12h. After filtering and vacuum drying for 12 hours, a brown cake-like product, that is, a graphene-loaded copper salt product, was obtained. Fully grind the brown cake-like product, weigh the two products with a mass of 1 g in a quartz boat, put them into a tube furnace to set the temperature, and pass in an inert gas protection, and heat up and roast for 3 hours. In this experiment, the composition of substances in the product was investigated when the roasting temperature was 400°C, 450°C, and 500°C.

[0025] Using XRD, the samples after roasting were characterized:

[0026] figure 1 The XRD spectrum of the sample drawn after the test of copper nitrate and graphene oxide baked at 400°C-500°C,

[0027] fi...

Embodiment 2

[0030] Weigh 5 ml of the prepared saturated aqueous solution of copper nitrate and copper salt with a measuring cylinder, add it to 0.5 g of graphene oxide obtained after freeze-drying, ultrasonicate for 1 h, and magnetically stir for 12 h at room temperature. After filtering and vacuum drying for 12 hours, a brown cake-like product, that is, a graphene-loaded copper salt product, was obtained. Fully grind the brown cake-like product, weigh 1 g of the product in a quartz boat, put it into a tube furnace to set the temperature, and pass in an inert gas protection, and heat up and roast for 3 hours. In this experiment, the distribution and size of copper nanoparticles were investigated when copper nitrate was used as a copper salt precursor and graphene oxide was fired at 400°C, 450°C, and 500°C, respectively.

[0031] Using SEM, characterize the product after roasting:

[0032] image 3 It is the SEM picture obtained after the copper nitrate and graphene oxide are roasted at ...

Embodiment 3

[0034] Weigh 5 ml of the prepared saturated aqueous solution of copper acetate salt with a measuring cylinder, add it into 0.5 g of graphene oxide obtained after freeze-drying, ultrasonicate for 1 h, and magnetically stir at room temperature for 12 h. After filtering and vacuum drying for 12 hours, a brown cake-like product, that is, a graphene-loaded copper salt product, was obtained. Fully grind the brown cake-like product, weigh 1 g of the product in a quartz boat, put it into a tube furnace to set the temperature, and pass in an inert gas protection, and heat up and roast for 3 hours. In this experiment, the distribution and size of copper nanoparticles obtained by calcination of copper acetate as a copper salt precursor and graphene oxide at 400°C, 450°C, and 500°C were investigated.

[0035] Using SEM, characterize the product after roasting:

[0036] Figure 4 It is the SEM picture obtained after the copper acetate and graphene oxide are roasted at different roasting ...

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Abstract

The invention relates to the technical field of Copper nano-catalyst preparation, in particular to a preparation method of a graphene-loaded copper nanoparticle. The method comprises the following steps of, magnetically stirring the freeze-dried graphene with copper salt water solution at room temperature, filtering, and vacuum drying to obtain the brown cake-shaped solid product. The obtained product is put into a programmable tube furnace for heating and roasting under the protection of inert gas. The preparation process of the method is easy to control and feasible, and the prepared nano composite material can be widely applied to the field of catalyses and the like.

Description

technical field [0001] The invention relates to the technical field of Cu nano catalyst preparation, and relates to a method for loading transition metal nanoparticles on graphene to obtain a functional nano material, in particular to a preparation method based on graphene-loaded copper nanoparticles. Background technique [0002] Energy is an important material basis for the development and continuation of human society. Therefore, it has been the research and concern of many scientists to find non-precious metals with huge natural reserves from nature to replace the huge, expensive and rare precious metals used in the traditional chemical industry. One of the hottest areas. As an abundant Cu element in the earth's crust, it has such factors as stable properties, low toxicity or non-toxicity, low price, and wide application. It has been successfully applied in important catalytic fields such as petrochemical, fine chemical synthesis, and energy reuse. Based on the nanoscal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/72B01J37/08B01J37/16
CPCB01J23/72B01J37/08B01J37/16
Inventor 荆俊杰张凤卿谢吉民魏巍姜德立章明美
Owner JIANGSU UNIV
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