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Nitrogen-doped graphene nanoribbon and preparation method thereof

A nitrogen-doped graphene and nanoribbon technology, applied in the field of materials, can solve the problems of complex preparation methods of graphene nanoribbons, high toxicity of reagents, harsh synthesis conditions, etc., and achieve increased reactivity, simplified preparation methods, and scientific preparation methods Effect

Inactive Publication Date: 2013-09-11
DALIAN UNIV OF TECH
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  • Application Information

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Problems solved by technology

[0008] The object of the present invention is to propose a method for preparing nitrogen-doped graphene nanoribbons, aiming at the problems of complex preparation method of graphene nanoribbons, high toxicity of reagents and harsh synthesis conditions, so as to realize simple preparation method, environmental protection and low reaction conditions. mild

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  • Nitrogen-doped graphene nanoribbon and preparation method thereof
  • Nitrogen-doped graphene nanoribbon and preparation method thereof
  • Nitrogen-doped graphene nanoribbon and preparation method thereof

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preparation example Construction

[0038] The invention discloses a method for preparing nitrogen-doped graphene nanobelts. The method firstly synthesizes nitrogen-doped iron-filled carbon nanotubes with unique composition and structure, and then uses oxidizing strong acid as an oxidant to oxidize nitrogen-doped iron-filled carbon nanotubes. , to prepare nitrogen-doped graphene nanobelts. Specifically, the preparation method of nitrogen-doped graphene nanoribbons comprises the following steps:

[0039] (1) Place two containers containing carbon source and catalyst precursor respectively in a quartz tube reactor with gas inlet and gas outlet at both ends, and make the two containers close to the gas inlet so that the The incoming inert protective gas can carry volatilized materials into the middle of the quartz tube reactor to participate in the reaction. It can be understood that in addition to the quartz tube reactor, the present invention can also adopt other forms of high temperature resistant tubular react...

Embodiment 1

[0051] image 3 It is the reaction device used to prepare nitrogen-doped iron-filled carbon nanotubes in Example 1; Figure 4 Be the scanning electron micrograph of the nitrogen-doped iron-filled carbon nanotube prepared in embodiment 1; Figure 5 The transmission electron micrograph of the nitrogen-doped iron-filled carbon nanotubes prepared in Example 1; Image 6 Be the scanning electron micrograph of the nitrogen-doped graphene nanobelt prepared in embodiment 1; Figure 7 It is a transmission electron micrograph of the nitrogen-doped graphene nanoribbons prepared in Example 1.

[0052] This embodiment discloses a preparation method of nitrogen-doped graphene nanoribbons, using image 3 The shown iron-filled carbon nanotube reaction device includes: a tubular resistance furnace 3 with a temperature control device, two porcelain boats 2 for holding solid reactants, and gas inlets 7 and 2 respectively at both ends. The quartz tube reactor 5 of the gas outlet 4, the porcela...

Embodiment 2

[0060] Figure 8 It is a scanning electron micrograph of the nitrogen-doped graphene nanoribbons prepared in Example 2.

[0061] Weigh 100 mg of nitrogen-doped iron-filled carbon nanotubes prepared in Example 1, place them in a flask filled with nitric acid with a volume of 100 ml and a mass percentage of 65 wt%, and ultrasonically disperse the carbon nanotubes for 5 min. Heat to 120 in an oil bath o C, reflux for 0.5 h. After completion of the reaction, cool to room temperature, pour the solution into 500 ml deionized water, filter, wash the sample to neutrality, and place in a vacuum oven at 120 o C dried for 12 h to prepare nitrogen-doped graphene nanoribbons (the product is labeled as N-GNRs-2).

[0062] Nitrogen-doped graphene nanoribbons were observed using a scanning electron microscope (SEM), as Figure 8 As shown, the obtained sample has an obvious two-dimensional band structure, and its length can reach more than ten microns. It shows that the nitrogen-doped iro...

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Abstract

The invention provides a nitrogen-doped graphene nanoribbon and a preparation method thereof. The preparation method of the nitrogen-doped graphene nanoribbon provided by the invention comprises the following steps of: firstly, by taking an inorganic covalent compound of iron namely ferric trichloride as a catalyst precursor and a solid nitrogen-containing organic compound as a carbon source, preparing a nitrogen-doped, iron-filled carbon nanotube by a floating-catalyst chemical vapor deposition method; next, putting the nitrogen-doped, iron-filled carbon nanotube in an oxidant solution, performing ultrasonic dispersion and then putting the mixed solution in an oil bath for heating reflux; cooling until the temperature reaches a room temperature, performing water washing until the solution is neutral; finally, performing vacuum drying to obtain the nitrogen-doped graphene nanoribbon. The nitrogen-doped graphene nanoribbon and the preparation method thereof provided by the invention are characterized in that lots of shortcomings of the prior art are overcome and the advantages of simple, environment-friendly preparation method and moderate reaction conditions are realized. The nitrogen-doped graphene nanoribbon provided by the invention can be applied to a lithium battery as an anode material.

Description

technical field [0001] The invention relates to material technology, in particular to a nitrogen-doped graphene nanobelt and a preparation method thereof. Background technique [0002] In 2004, Geim and Novoselov prepared monoatomic layer graphite or graphene by micromechanical exfoliation [Novoselov, et al. Science, 2004, 306(5696): 666]. The material has excellent optical, electrical, and mechanical properties, and has broad application prospects in the fields of energy, electronics, and catalysis. In addition to the micromechanical exfoliation method, the current methods for preparing graphene mainly include the reduced graphite oxide method [Park and Ruoff, Nature nanotechnology, 2009, 4(4): 217], the epitaxial growth method [Sutter, Flege and Sutter, Nature materials, 2008 , 7(5): 406], chemical vapor deposition [Li, et al. Science, 2009, 324(5932): 1312], organic synthesis [Yang, et al. Journal of the American Chemical Society, 2008, 130 (13): 4216] et al. These pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04H01M4/583B82Y30/00C01B32/184
CPCY02E60/10
Inventor 王旭珍刘洋董琰峰邱介山
Owner DALIAN UNIV OF TECH
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