Molybdenum disulfide nanosheet/nitrogen-doped carbon fiber hybrid material and preparation method therefor

A nitrogen-doped carbon fiber and molybdenum disulfide technology, applied in the field of carbon fiber materials, can solve the problems of restricting wide application, high price, cumbersome production process, etc., and achieve the effect of reducing agglomeration, low cost and improving activity

Inactive Publication Date: 2015-11-18
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are many kinds of traditional carbon fibers, such as polyacrylonitrile-based carbon fibers, viscose-based carbon fibers, etc., due to their cumbersome production process and high price, their wide application is greatly limited.

Method used

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  • Molybdenum disulfide nanosheet/nitrogen-doped carbon fiber hybrid material and preparation method therefor
  • Molybdenum disulfide nanosheet/nitrogen-doped carbon fiber hybrid material and preparation method therefor
  • Molybdenum disulfide nanosheet/nitrogen-doped carbon fiber hybrid material and preparation method therefor

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Experimental program
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Effect test

Embodiment 1

[0029] Embodiment 1, the present embodiment comprises the following steps:

[0030] (1) Preparation of nitrogen precursor-coated bacterial cellulose, the method is the same as patent CN102212210A, and the polyaniline-coated bacterial cellulose prepared by this method is denoted as BC / PANI;

[0031] (2) Put the polyaniline-coated bacterial fibers prepared in step (1) into a tube furnace for carbonization. The conditions are: in an argon atmosphere, slowly rise from room temperature to 800°C (the heating process takes 3h ), and then keep it warm for 0.5h to obtain nitrogen-doped carbon fibers;

[0032] (3) Weigh 20mg of nitrogen-doped carbon fiber, 10mg of ammonium molybdate and 8.6mg of thiourea, put them into 25mL of solvent, and sonicate for 0.5h;

[0033] (4) Transfer the dispersion liquid containing nitrogen-doped carbon fiber, molybdenum salt and sulfur salt prepared in step (3) to a 40mL hydrothermal kettle, and conduct a hydrothermal reaction at 200°C for 12h. The blac...

Embodiment 2

[0035] Example 2, the quality of ammonium molybdate in Example 1 was changed to 90mg, the quality of thiourea was changed to 77.4mg, and the rest were the same as in Example 1, and the hybrid material finally obtained was recorded as N-CBC / MoS 2 -90. The hydrogen evolution overpotential of the hybrid material is -0.12V.

Embodiment 3

[0036] Example 3, the quality of ammonium molybdate in Example 1 is changed to 180 mg, the quality of thiourea is changed to 154.8 mg, the rest are the same as in Example 1, and the hybrid material finally obtained is recorded as N-CBC / MoS 2 -180. The hydrogen evolution overpotential of the hybrid material is -0.14V.

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Abstract

The invention belongs to the technical field of carbon fiber materials, and particularly discloses a molybdenum disulfide nanosheet / nitrogen-doped carbon fiber hybrid material and a preparation method therefor. The molybdenum disulfide nanosheet / nitrogen-doped carbon fiber hybrid material is prepared by growing a molybdenum disulfide nanosheet on a nitrogen-doped carbon fiber with a three-dimensional network structure in situ by taking molybdenum salt and sulfosalt as precursors; A preparation process for the molybdenum disulfide nanosheet / nitrogen-doped carbon fiber hybrid material comprises: preparing the nitrogen-doped carbon fiber through in-situ oxidization-reduction reaction, freeze-drying and high-temperature carbonization; and growing the molybdenum disulfide nanosheet on the nitrogen-doped carbon fiber in situ through a one-step solvothermal method. According to the nitrogen-doped carbon fiber prepared by the preparation method, the wettability of the carbon fiber and a solvent is improved, and more active sites are provided for growth of inorganic particles; and moreover, the electrical conductivity of the carbon fiber is greatly improved, so that the migration rate for electrons in an electro-catalysis hydrogen-evolution process is increased. The molybdenum disulfide nanosheet / nitrogen-doped carbon fiber hybrid material prepared by the preparation method can be used as an ideal high-performance catalyst material and can be used for the electro-catalysis hydrogen-evolution field.

Description

technical field [0001] The invention belongs to the technical field of carbon fiber materials, and in particular relates to a molybdenum disulfide nanosheet / nitrogen-doped carbon fiber hybrid material and a preparation method thereof. Background technique [0002] Hydrogen is a new energy source with high efficiency, energy saving and environmental protection, and it is being widely used in various fields of people's production and life. Hydrogen production by water electrolysis refers to a type of method in which hydrogen ions are reduced to electrons on the surface of an electrochemical catalyst under the action of electricity, thereby generating hydrogen. At present, the most efficient catalyst for electrolytic hydrogen production is platinum (Pt), whose overpotential is near 0V, and its performance is much better than other types of catalyst materials. However, as a noble metal, platinum has very limited reserves on the earth, and its high price limits its application i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24C25B11/04
Inventor 刘天西赖飞立缪月娥张由芳黄云鹏鲁恒毅左立增鄢家杰
Owner FUDAN UNIV
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