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Graphene-copper nanoparticle composite, and preparation and application thereof

A composite material, copper nanotechnology, applied in the fields of material electrochemical variables, electrolytic coatings, chemical instruments and methods, etc., can solve the problems of difficult mass production, difficult to control the degree of reduction, and superior performance discounts, and achieve simple operation. , Reduce the effect of graphene specific surface reduction and fast experimental operation

Inactive Publication Date: 2013-01-30
HUNAN UNIV
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Problems solved by technology

For example, high-purity single-layer graphene is difficult to produce on a large scale. The reduced graphene oxide produced by the reduction of graphene oxide obtained by the chemical oxidation method is difficult to control the degree of reduction and cannot avoid graphite oxide in the process of chemical reduction. Factors such as the transformation of graphite again greatly discount the original superior performance of graphene, and the graphene obtained in the same chemical vapor deposition method still has the process of graphene being graphitized

Method used

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  • Graphene-copper nanoparticle composite, and preparation and application thereof
  • Graphene-copper nanoparticle composite, and preparation and application thereof
  • Graphene-copper nanoparticle composite, and preparation and application thereof

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Experimental program
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Embodiment Construction

[0036] 1. Preparation of Graphene Oxide Solution

[0037] The graphite oxide prepared by the Hummers oxidation method was ultrasonically dispersed in a buffer solution with pH=9.18 for 3 hours to obtain a graphene oxide solution with a concentration of 0.3 g / L.

[0038] 2. Preparation of EDTA-Cu solution

[0039] Combine 0.2M EDTA solution and 0.2M CuSO 4 Mix 1:1 to get the 0.1M EDAT-Cu solution we need

[0040] 3. Preparation of graphene and EDTA-Cu mixed solution

[0041] Measure 10 mL of the graphene oxide solution prepared in the first step, and then respectively weigh 100 μL, 500 μL, and 1000 μL of the EDTA-Cu prepared in the second step and mix them thoroughly, and then pass in high-purity nitrogen for 30 minutes.

[0042] 4. Preparation of graphene-copper nanoparticle composites by electrodeposition

[0043] The glassy carbon electrode (or Ti sheet) is the working electrode (all processed in advance), the Pt electrode is the counter electrode, and the saturated calomel electrode is...

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Abstract

The invention discloses a graphene-copper nanoparticle composite, and preparation and application thereof, and is characterized in that three-dimensional irregular multistage overlapped graphene sheet layers are formed on a grinded glassy carbon electrode or a dry pure titanium piece subjected to the surface treatment, the graphene sheet layers are in different sizes and are overlapped at different directions, and some graphene sheet layers are tilted; copper nanoparticles are densely compounded on the graphene sheet layers. The invention further provides a preparation method of the graphene-copper nanoparticle composite, the method is simple and easy, green and environmental friendly, and the glassy carbon electrode decorated by the graphene-copper nanoparticle composite prepared by the method has good application in the aspect of an electrochemical sensor.

Description

Technical field: [0001] The invention relates to the preparation of a multi-level nanostructure graphene-copper nanoparticle composite material and its application in an electrochemical sensor Background technique: [0002] Graphene is a two-dimensional new type of carbon material composed of a single layer of carbon atoms, with a super-large conjugated structure similar to a dense honeycomb. Since the first high-purity single-layer graphene obtained by mechanical exfoliation in 2004, graphene has received extensive attention. Graphene has a large specific surface area, high conductivity, and strong mechanical strength. Based on these properties of graphene, graphene is widely used to synthesize nanocomposites, make chemical biosensors, and other electrochemical components, etc. . Although graphene has very excellent properties and attractive application prospects, there are still many factors restricting the development of graphene. For example, it is difficult to produce hig...

Claims

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Application Information

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IPC IPC(8): B32B15/04C25D15/00G01N27/26
Inventor 刘承斌罗胜联张航唐艳红杨琼伍纳
Owner HUNAN UNIV
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