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A flower-shaped molybdenum diselenide/carbon nanotube composite material and its synthesis method and application

A technology of molybdenum diselenide and carbon nanotubes, used in chemical instruments and methods, chemical/physical processes, catalyst activation/preparation, etc.

Active Publication Date: 2021-04-20
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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  • A flower-shaped molybdenum diselenide/carbon nanotube composite material and its synthesis method and application
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  • A flower-shaped molybdenum diselenide/carbon nanotube composite material and its synthesis method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0030] 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;

[0031] 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

[0034] 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;

[0035] 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

[0038] 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;

[0039] 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 field of development, design and application of photocatalytic materials, and discloses a flower-shaped molybdenum diselenide / carbon nanotube composite material and a synthesis method and application thereof. In the flower-shaped molybdenum diselenide / carbon nanotube composite material involved in the present invention, the mass ratio of the flower-shaped molybdenum diselenide to the carbon nanotube is 1:0.025-1. The carbon nanotubes are uniformly attached to the flower-shaped molybdenum diselenide. The preparation method is as follows: in the present invention, the carbon nanotubes are added into the molybdenum diselenide solution to be synthesized, and the hydrothermal reaction is carried out at 180-240 DEG C. Afterwards, centrifugal cleaning is performed, and drying in a vacuum environment is performed to obtain a flower-like molybdenum diselenide / carbon nanotube composite material. The method of the invention is simple and repeatable, and has a good application prospect.

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. [0002] technical background [0003] 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 comp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/057B01J35/02B01J37/10B01J37/03C01B13/02
CPCB01J27/0573B01J35/0033B01J35/004B01J35/026B01J37/031B01J37/10C01B13/0207
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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