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Preparation method of molybdenum disulfide/carbon nano-fiber hybrid material

A technology of carbon nanofibers and hybrid materials, which is applied in the fields of fiber chemical characteristics, textiles and papermaking, can solve the problems of unfavorable electrocatalytic materials and poor electrical conductivity, and achieve high catalytic activity, good stability and repeatability, and preparation The effect of simple process

Inactive Publication Date: 2014-09-24
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, since molybdenum disulfide is a semiconductor material, its conductivity is poor, which is not conducive to its use as an electrocatalytic material.

Method used

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  • Preparation method of molybdenum disulfide/carbon nano-fiber hybrid material
  • Preparation method of molybdenum disulfide/carbon nano-fiber hybrid material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: get 5g polyacrylonitrile powder, make the solution that mass concentration is 5% with dimethyl sulfoxide, then adopt electrospinning method to spin this solution, control spinning voltage to be 4kV, receiving device arrives The distance between the spinning needles is 5 cm (that is, the receiving distance is 5 cm), and the flow rate of the solution is 0.01 mL / min, that is, polyacrylonitrile ultrafine fibers with a diameter of 100-800 nm are obtained.

[0019] Place the obtained ultrafine fibers in a muffle furnace or tube furnace, pre-oxidize in air at 200°C for 8 hours, then keep them at 800°C in an argon atmosphere for 20 hours, and finally cool to room temperature in an argon atmosphere, to obtain carbon nanofibers.

[0020] Put 0.5g of manganese dioxide, 1g of molybdenum trioxide and 0.5g of carbon nanofiber into three corundum boats respectively, and then place all three corundum boats in the middle of the tube furnace; add 1g of sulfur powder into an...

Embodiment 2

[0021] Embodiment 2: get 5g cellulose, make the solution that mass concentration is 15% with dimethyl sulfoxide, then adopt electrospinning method to spin this solution, control the spinning voltage to be 18kV, receive device to spin The distance between the needles is 20cm, and the flow rate of the solution is 0.01mL / min, that is, ultrafine fibers with a diameter of 100-800nm ​​are obtained.

[0022] Place the obtained ultrafine fibers in a muffle furnace or a tube furnace, pre-oxidize in air at 500°C for 3 hours; then keep them warm at 1200°C in an argon atmosphere for 5 hours, and finally cool to room temperature in an argon atmosphere, to obtain carbon nanofibers.

[0023] Put 0.5g of manganese dioxide, 1g of molybdenum trioxide and 0.5g of carbon nanofiber into three corundum boats respectively, and then place all three corundum boats in the middle of the tube furnace; add 1g of sulfur powder into another corundum In the boat, placed upstream of the air flow; after turni...

Embodiment 3

[0024] Embodiment 3: get 10g polyvinylpyrrolidone, make the solution that mass concentration is 10% with dimethyl sulfoxide, then adopt electrospinning method to spin this solution, control the spinning voltage to be 8kV, the receiving device arrives spinning The distance between the silk needles is 15cm, and the flow rate of the solution is 0.01mL / min, that is, ultrafine fibers with a diameter of 100-800nm ​​are obtained.

[0025] Place the obtained ultrafine fibers in a muffle furnace or tube furnace, pre-oxidize in air at 300°C for 5 hours, then keep them at 1000°C in an argon atmosphere for 10 hours, and finally cool to room temperature in an argon atmosphere, to obtain carbon nanofibers.

[0026] Put 0.5g of manganese dioxide, 1g of molybdenum trioxide and 0.5g of carbon nanofiber into three corundum boats respectively, and then place all three corundum boats in the middle of the tube furnace; add 1g of sulfur powder into another corundum In the boat, placed upstream of ...

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Abstract

The invention relates to a preparation method of a molybdenum disulfide / carbon nano-fiber hybrid material. The method comprises the following steps: putting manganese dioxide, molybdenum trioxide and carbon nano-fibers into three corundum boats abreast respectively; placing the three corundum boats in the middle of a tubular furnace; adding powdered sulfur into another corundum boat, and placing at the upstream part of gas flow; after inert protective gas flow is connected for 30 minutes, raising the temperature of the tubular furnace to 700 DEG C, and raising the temperature of the corundum boat filled with the powdered sulfur to 150 DEG C; and raising the temperature of the tubular furnace to 800-1,300 DEG C after 30 minutes, preserving heat for 5-12 hours, maintaining the temperature of the corundum boat filled with the powdered sulfur at 150 DEG C all the time, and finally cooling to room temperature under the protection of inert protective gas to prepare the molybdenum disulfide / carbon nano-fiber hybrid material. The preparation method has the beneficial effects that a preparation process is simple; the stability and the repeatability are high; the obtained hybrid material is high in catalytic activity.

Description

technical field [0001] The invention belongs to the fields of nanomaterial preparation and nanocatalysis, and relates to a method for preparing a molybdenum disulfide / carbon nanofiber hybrid material, which can be used in catalytic fields such as electrocatalytic hydrogen evolution. Background technique [0002] Molybdenum disulfide with a graphene-like structure has special optical and electrical properties, especially a very high catalytic hydrogen evolution activity. The performance of molybdenum disulfide nanomaterials is not only related to its own morphology, structure, and size, but also the preparation method. The corresponding properties are also different, and sometimes small changes in nanostructures may cause large changes in catalytic activity. Moreover, since molybdenum disulfide is a semiconductor material, its electrical conductivity is poor, which is not conducive to its use as an electrocatalytic material. [0003] Carbon nanofibers have a series of advant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/051D01F9/22D01F9/16D01F9/21
Inventor 杜明亮朱罕张明王盼包世勇邹美玲杨婷婷
Owner ZHEJIANG SCI-TECH UNIV
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