Preparation method of FeNx nanoparticle doped bamboo-like carbon nanotube

A nanoparticle and carbon nanotube technology, which is applied in the field of preparation of FeNx nanoparticle-doped bamboo-like carbon nanotubes, can solve the problems of few products, poor stability, poor electrocatalytic performance, etc. The effect of high rate, high activity and stability

Pending Publication Date: 2021-07-09
HEFEI UNIV OF TECH
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Problems solved by technology

Although many carbon materials derived from MOFs materials have been used as electrode catalysts in the field of fuel cells, most of them show poor electrocatalytic performance in the oxygen reduction reaction compared with commercial Pt / C catalysts.
Therefore, MOFs materials and their derivatives are currently facing some challenges, such as poor stability and fewer products.

Method used

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  • Preparation method of FeNx nanoparticle doped bamboo-like carbon nanotube
  • Preparation method of FeNx nanoparticle doped bamboo-like carbon nanotube
  • Preparation method of FeNx nanoparticle doped bamboo-like carbon nanotube

Examples

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Embodiment 1

[0034] This embodiment prepares FeN according to the following steps x Hierarchical tubular structure composed of nanoparticles and bamboo-shaped carbon nanotubes:

[0035] a. Dissolve 1g of 2-methylimidazole in 10mL of N,N-dimethylformamide solution, stir magnetically at 400rpm for 3h until the solution is clear and transparent, then weigh 1g of polyacrylonitrile and add it to the above solution. Magnetic stirring was performed at 400 rpm for 12 hours to obtain an electrospinning solution.

[0036] Transfer the electrospinning solution to a 10mL syringe for electrospinning, set the flow rate to 0.3mL / h, the high-voltage DC voltage to 11KV, and the distance from the receiving screen to the needle to be 15cm. The polyacrylonitrile fiber containing 2-methylimidazole can be obtained on the receiving screen, and after spinning for 3 hours, the polyacrylonitrile fiber film containing 2-methylimidazole can be obtained.

[0037] b. In an oven at 35°C, soak 80 mg of polyacrylonitril...

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Abstract

The invention discloses a preparation method of a FeNx nanoparticle doped bamboo-like carbon nanotube, which comprises the following steps of by taking a dimethylimidazole-containing polyacrylonitrile fiber film as a template, reacting in a solution to obtain a polyacrylonitrile@Zn-Fe-ZIFs nanoparticle film, then etching polyacrylonitrile to obtain a nanotube assembled by Zn-Fe-ZIFs nanoparticles, and finally calcining the nanotube to obtain a target product. The preparation raw materials are not noble metals, so that the non-noble metal of the catalyst is realized, the cost of the oxygen reduction catalyst is effectively reduced, and the obtained bamboo-like carbon nanotube can ensure enhanced electron transfer, has higher activity and stability, improves the catalytic performance of oxygen reduction, and has a wider application prospect.

Description

technical field [0001] The invention belongs to the technical field of functional nanometer materials, and in particular relates to a preparation method of FeNx nanoparticle doped bamboo-shaped carbon nanotubes. Background technique [0002] For carbon-supported materials to have better performance in terms of catalysts, a large number of active sites and mass and charge transport are crucial, so the performance of carbon-supported catalysts is mainly affected by their structural morphology. Nanotubes (CNTs) have been widely studied in electronics, biological probes, especially in the fields of environment and energy due to their large aspect ratio, specific surface area, and excellent mechanical properties (J.Mater.Chem.A, 2020, 8 , 6144–6182). Carbon nanotubes have excellent applications as candidate materials, such as electrode materials, exchange membranes, catalysts, sensors, microelectronic components, fuel cells, etc. Carbon nanotubes are currently a research hotspo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/18B01J27/24B01J35/00B01J35/02B01J37/00B01J37/08
CPCB01J27/24B01J21/185B01J35/0033B01J35/006B01J35/02B01J37/0018B01J37/086B01J37/082
Inventor 张传玲朱夕夕张强解燕
Owner HEFEI UNIV OF TECH
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