Method for manufacturing nitrogen-doped multi-wall carbon nano tube

A multi-walled carbon nanotube, nitrogen-doped technology, applied in nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of long process, poor uniform dispersion of elements, affecting material properties, etc., to avoid cumbersome steps, Good structure and morphology, high specific surface area effect

Inactive Publication Date: 2013-12-18
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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Problems solved by technology

Although there are many researches on the preparation of carbon nanotubes, there are still many problems to be solved in the preparation method and process of carbon nanotubes, such as cumbersome and complicated process, low yield, and the growth mechanism of carbon nanotubes has not yet been achieved. consensus
In addition, researche

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  • Method for manufacturing nitrogen-doped multi-wall carbon nano tube
  • Method for manufacturing nitrogen-doped multi-wall carbon nano tube
  • Method for manufacturing nitrogen-doped multi-wall carbon nano tube

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preparation example Construction

[0021] Specifically, the preparation method of the present invention includes: combining a mesoporous silica template with a three-dimensional cubic pore structure and without removing surfactants, and a nitrogen-containing macrocyclic iron complex as a carbon source, a nitrogen source, and an iron source at the same time through physical Mechanically mixing uniformly to make a mixture; heat-treating the mixture to make an iron oxide / N / carbon nanotube / silica template composite material; removing the silica template in the composite material with a strong base; and Iron oxides in the composite material are removed with strong acid to prepare the nitrogen-doped multi-walled carbon nanotubes.

[0022] More specifically, as an example, the preparation method of the present invention may include the following steps.

[0023] (1) Preparation of mesoporous silica template material (KIT-6 with three-dimensional cubic channel structure) according to prior art literature (such as Chem.C...

Embodiment 1

[0036] Described in accordance with the technical scheme and process flow. First, mesoporous silica (KIT-6) with a three-dimensional cubic mesoporous structure was prepared according to the literature, and KIT-6 without surfactant was used as a hard template material. First weigh 0.5g of iron phthalocyanine, and then take the mesoporous SiO prepared in the above step (1) without removing the surfactant 2 Mix 0.5g of the template material with the above powder, and mix it evenly with the help of physical mechanical mixing method to obtain the precursor SiO 2 Mixed material. Then, it was heated at 900°C in N 2 Heat treatment in the atmosphere for 10h to obtain the product SiO 2 of composite materials. The resulting composite was detemplated by 2M NaOH solution at 80 °C, followed by 2.6M HNO 3 Treat for 48h to remove FeO x catalyst. Then centrifuged, washed and dried to obtain nitrogen-doped multi-walled carbon nanotubes with good morphology. The prepared FeO x The wide-...

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Abstract

The invention relates to a method for manufacturing a nitrogen-doped multi-wall carbon nano tube. The method comprises the following steps: uniformly mixing a mesoporous silica mold plate and a nitrogenous macrocyclic iron complex in a physical mechanical mode so as to obtain a mixture, wherein the mesoporous silica mold plate is of a three-dimensional cubic open-framework structure and a surfactant is not removed, and the nitrogenous macrocyclic iron complex can be simultaneously used as a carbon source, a nitrogen source and an iron source; carrying out heat treatment on the mixture so as to prepare an iron oxide/N/carbon nano tube/silicon dioxide mold plate composite material; removing the silicon dioxide mold plate of the composite material through strong alkali; removing the iron oxide of the composite material through strong acid so as to obtain the nitrogen-doped multi-wall carbon nano tube. By utilizing the method, complex steps the conventional manufacturing process of the nitrogen-doped multi-wall carbon nano tube are effectively avoided, the method is simple, convenient and rapid, and time and labor are saved.

Description

technical field [0001] The invention relates to a nitrogen-doped multi-wall carbon nanotube and a preparation method thereof, belonging to the field of preparation and synthesis of inorganic nanomaterials. Background technique [0002] Carbon materials have become one of the research hotspots in the field of materials due to their excellent properties. Material scientists at home and abroad have carried out a lot of research work on the controllable preparation and application of new nano-carbon materials. Since the discovery of carbon nanotubes by Iijima in 1991, researchers have carried out a lot of research work on the optimal growth of carbon nanotubes to obtain materials with excellent electrical, optical, chemical, thermodynamic and mechanical properties. As a one-dimensional ordered nano-carbon structure and functional material, carbon nanotubes have high mechanical strength and elasticity, high specific surface area, strong adsorption performance, excellent optical p...

Claims

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Application Information

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IPC IPC(8): C01B31/02B82Y30/00C01B32/162
Inventor 王永霞崔香枝施剑林陈立松
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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