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Preparation method of carbon-doped molybdenum disulfide nanometer material

A molybdenum disulfide and nanomaterial technology, applied in the field of nanomaterials, can solve problems such as high cost and scarcity in nature, achieve the effects of less pollution, uniform lamella size, and promotion of application

Inactive Publication Date: 2015-04-08
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Hydrogen is an important clean energy. Hydrogen production by electrolysis of water is the most effective and sustainable method. Traditional noble metal catalysts (such as Pt) have high catalytic efficiency, but their cost is high and they are scarce in nature. Therefore, it is urgent to develop economical, stable and efficient new catalyst

Method used

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  • Preparation method of carbon-doped molybdenum disulfide nanometer material
  • Preparation method of carbon-doped molybdenum disulfide nanometer material
  • Preparation method of carbon-doped molybdenum disulfide nanometer material

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Take by weighing a certain amount of sodium molybdate and thiourea (CN 2 h 4 S), dissolved in ethylene glycol and ultrapure water in turn, the volume ratio is 3:2, at room temperature, stirred for 2h to make it fully dissolved, then adjusted pH=3 with hydrochloric acid, and finally transferred the above solution to 80ml In a reaction kettle, solvothermal reaction was carried out at 160°C. After 20 hours of reaction, it was taken out, cooled to room temperature naturally, and then washed with ultrapure water and ethanol in sequence, and the black matter was collected and dried in a vacuum oven at 55°C for 14 hours. , and finally get carbon-doped MoS 2 black powder.

[0023] As-prepared carbon-doped MoS 2 Nanomaterials and carbon-free MoS 2 X-ray diffraction patterns of nanomaterials such as figure 1 As shown, it can be seen from the figure that the carbon-free MoS 2 Its characteristic peak is 002 at 14.38°, while carbon-doped MoS 2 There are two peaks at 9.73° and...

Embodiment 2

[0029] Take a certain amount of ammonium molybdate tetrahydrate ((NH 4 ) 6 Mo 7 o 24 4H 2 (2) and sodium thiocyanoacetate, dissolved in ethylene glycol and ultrapure water successively, its volume ratio is 4:1, at room temperature, stir 2h, make it fully dissolved, then adjust its pH=5 with hydrochloric acid, Finally, the above solution was transferred to an 80ml reaction kettle, and a solvothermal reaction was carried out at 180°C. After 12 hours of reaction, it was taken out, cooled to room temperature naturally, and then washed with ultrapure water and ethanol successively to collect black matter. Dry in a vacuum oven at 65°C for 10 hours to obtain MoS 2 Black powder, namely carbon doped MoS 2 nanomaterials.

Embodiment 3

[0031] Weigh a certain amount of molybdenum oxide and sodium thiocyanoacetate respectively according to the molar ratio of 1:2.5, dissolve them in ethylene glycol and ultrapure water in sequence, and the volume ratio is 4:1. At room temperature, stir for 2 hours to make it Fully dissolve, then adjust its pH to 5 with hydrochloric acid, and finally transfer the above solution to an 80ml reaction kettle, carry out a solvothermal reaction at 190°C, take it out after 20 hours of reaction, cool it naturally to room temperature, and then successively use a supernatant After washing with pure water and ethanol, the black substance was collected and dried in a vacuum oven at 60°C for 12 hours to obtain MoS 2 Black powder, namely carbon doped MoS 2 nanomaterials.

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Abstract

The invention provides a preparation method of a carbon-doped molybdenum disulfide nanometer material. The method comprises the following steps: weighing sodium molybdate, ammonium molybdate or molybdenum oxide and thiourea, sodium sulphide, potassium rhodanate or dithiocyano sodium acetate to be firstly dissolved into an ethylene glycol solution, then dissolved into ultrapure water, and fully stirring, so as to prepare a mixed solution; adjusting the pH value of a mixed solution with ammonia water and hydrochloric acid; transferring the mixed solution into a reaction kettle, and carrying out solvothermal reaction; taking out the mixed solution after reaction, and naturally cooling to room temperature; sequentially washing with ultrapure water and ethyl alcohol, and collecting a black substance; and drying the black substance in a vacuum drying oven, so as to prepare the carbon-doped molybdenum disulfide nanometer material. According to the carbon-doped MoS2 nanometer material prepared by the method, the sheet is uniform in size, good in dispersity, small in pollution in preparation process, and free of harmful air; and the molybdenum disulfide nanometer material with good dispersity can be greatly prepared.

Description

technical field [0001] The invention provides a method for preparing a carbon-doped molybdenum disulfide nanometer material, which belongs to the technical field of nanomaterials. Background technique [0002] MoS 2 Research has been very hot, and this new class of ultrathin metal / sulfide materials, also known as transition metal dichalcogenides (TMDCs), is considered to be the most promising layered material to replace graphene. Graphene is fundamentally and technologically interesting for many applications. It is inert and can only be made active by functionalization of desired molecules, which in turn leads to loss of some exotic properties. However, monolayer The general formula of 2D TDMs is MX 2 , where M is a 4-10 transition metal and X is a chalcogen, exhibiting a rich chemistry. This opens up opportunities for fundamental and technological research in a variety of fields, including catalysis, energy storage, sensing and electronic devices such as field-effect tra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G39/06B82Y30/00
CPCC01G39/06C01P2002/72C01P2002/80C01P2002/85C01P2004/03C01P2004/04C01P2004/80
Inventor 王娇杨超赵媛周朝昕田熙科王龙艳罗东岳
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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