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Flower-shaped molybdenum diselenide/carbon nano tube composite material as well as synthetic method and application thereof

A technology of carbon nanotubes and molybdenum diselenide, applied in chemical instruments and methods, chemical/physical processes, catalyst activation/preparation, etc., to promote the separation of electrons and holes and increase the surface contact area

Active Publication Date: 2019-01-18
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as a framework material, carbon nanotubes have their own unique structure, so the combination of carbon nanotubes and flower-shaped molybdenum diselenide is a preferred way
But so far, there is no research on the use of carbon nanotubes and flower-shaped molybdenum diselenide as cocatalysts in photocatalysis

Method used

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  • Flower-shaped molybdenum diselenide/carbon nano tube composite material as well as synthetic method and application thereof
  • Flower-shaped molybdenum diselenide/carbon nano tube composite material as well as synthetic method and application thereof
  • Flower-shaped molybdenum diselenide/carbon nano tube composite material as well as synthetic method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Pour carbon nanotubes and concentrated nitric acid into the reaction kettle, wherein the ratio of carbon nanotubes and concentrated nitric acid is 20mg:100ml; the hydrothermal temperature is 100°C, and the heating time is 1 hour; collect the precipitate after the reaction, and add acetone solution , ultrasonication for 30 minutes; then wash with deionized water and alcohol for 3 times; dry; grind and set aside;

[0030] Add the carbon nanotubes processed in the above steps into the reactor, and then add Na 2 MoO 4 2H 2 O, Se powder and NaBH4 and ethanol aqueous solution, in which carbon nanotubes, Na 2 MoO 4 2H 2 O, Se powder and NaBH 4 The concentrations are 0.5g / L, 0.14mol / L, 0.49mol / L, 0.17mol / L, respectively. Wherein the aqueous ethanol solution is 40ml (alcohol: water=1:1); put into a vacuum drying oven, the holding temperature is 220°C, and the time is 24h; the precipitate is collected and treated with NaOH solution for 2 hours at 80°C, the concentration of ...

Embodiment 2

[0033] Pour carbon nanotubes and concentrated nitric acid into the reaction kettle, wherein the ratio of carbon nanotubes to concentrated nitric acid is 80mg:100ml; the hydrothermal temperature is 120°C, and the heating time is 1 hour; collect the precipitate after the reaction, and add acetone solution , ultrasonication for 60 minutes; then wash with deionized water and alcohol for 3 times; dry; grind and set aside;

[0034] Add the carbon nanotubes processed in the above steps into the reactor, and then add Na 2 MoO 4 2H 2 O, Se powder and NaBH 4 and ethanol aqueous solution, in which carbon nanotubes, Na 2 MoO 4 2H 2 O, Se powder and NaBH 4 The concentrations are 2g / L, 0.14mol / L, 0.45mol / L, 0.15mol / L, respectively. Wherein the aqueous ethanol solution is 50ml (alcohol: water = 1:1); put it into a vacuum drying oven, keep the temperature at 220°C for 24h; collect the precipitate, and treat it with NaOH solution at 80°C for 6 hours, the concentration of NaOH solution i...

Embodiment 3

[0037] Pour carbon nanotubes and concentrated nitric acid into the reaction kettle, wherein the ratio of carbon nanotubes and concentrated nitric acid is 20mg:100ml; the hydrothermal temperature is 80°C, and the heating time is 1 hour; collect the precipitate after the reaction, and add acetone solution , ultrasonication for 30 minutes; then wash with deionized water and alcohol for 3 times; dry; grind and set aside;

[0038] Add the carbon nanotubes processed in the above steps into the reactor, and then add Na 2 MoO 4 2H 2 O, Se powder and NaBH4 and ethanol aqueous solution, in which carbon nanotubes, Na 2 MoO 4 2H 2 O, Se powder and NaBH 4 The concentrations are 0.5g / L, 0.14mol / L, 0.49mol / L, 0.17mol / L, respectively. Among them, the ethanol aqueous solution is 40ml (alcohol: water = 1:1); put it into a vacuum drying oven, keep the temperature at 180°C, and the time is 24h; collect the precipitate, and treat it with NaOH solution at 80°C for 2 hours, and the concentrati...

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Abstract

The invention belongs to the fields in development, design and application of photocatalytic materials, and discloses a flower-shaped molybdenum diselenide / carbon nano tube composite material as wellas a synthetic method and application thereof. In the flower-shaped molybdenum diselenide / carbon nano tube composite material, the mass ratio of flower-shaped molybdenum diselenide to carbon nano tubes is 1:(0.025-1), and the carbon nano tubes are evenly adhered on the flower-shaped molybdenum diselenide. The preparation method comprises the following steps: adding carbon-containing nano tubes into a molybdenum diselenide solution to be synthesized for a hydrothermal reaction at 180-240 DEG C; and then performing centrifugal cleaning, and drying at a vacuum environment to obtain the flower-shaped molybdenum diselenide / carbon nano tube composite material. The method provided by invention is simple and good in repeatability, and has good application prospects.

Description

technical field [0001] The invention belongs to the field of development, design and application of photocatalytic materials, and relates to a flower-shaped molybdenum diselenide / carbon nanotube composite material, a synthesis method and application. technical background [0002] Molybdenum diselenide is often used as a lubricant and battery cathode material, and has attracted widespread attention because of its high energy storage and good friction properties. At the same time, molybdenum diselenide with flower-like morphology has an ultra-thin sheet structure, It has a larger surface area and has better light absorption properties. However, pure flower-like molybdenum diselenide has serious defects in the electron transport process, and its surface area cannot be fully contacted. The structural change of molybdenum diselenide during electron transport can be enhanced by adding framework materials. In recent years, scholars at home and abroad have studied many composite st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/057B01J35/02B01J37/10B01J37/03C01B13/02B01J35/00
CPCC01B13/0207B01J27/0573B01J37/031B01J37/10B01J35/50B01J35/39B01J35/33
Inventor 李冬升王怀冲李丹唐华陈光王威程晓农
Owner JIANGSU UNIV
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