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A kind of preparation method of molybdenum disulfide nano sheet material

A technology of molybdenum disulfide and nanosheets, which is applied in the field of preparation of molybdenum disulfide nanosheet materials, can solve the problems of difficulty in completely cleaning lithium ions, difficulty in achieving controllable mass production, and uneven product quality, so as to achieve easy intelligence Control, improve the effect of intercalation, promote the effect of intercalation and stripping

Active Publication Date: 2022-06-14
XIAMEN HONGLU TUNGSTEN MOLYBDENUM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] CN104310482A proposes a method for preparing molybdenum disulfide nanosheets by ultrasonic-assisted chemical intercalation. The method uses n-butyllithium as an intercalation agent. The preparation environment requires anaerobic and anhydrous, and lithium ions are difficult to completely clean, and are likely to remain in the product become impurity in the medium, resulting in impurity of the product and affecting the application
This method will introduce uncontrollable metal ions into the product, which cannot be completely removed, which will lead to impurity of the product and affect the application
CN106563130A adds self-protein and molybdenum disulfide powder into water, and separates and obtains molybdenum disulfide nanosheets by means of ultrasonic crushing, but the quality of the product obtained by this method is not uniform, the yield is small, and it is difficult to achieve controllable mass production

Method used

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  • A kind of preparation method of molybdenum disulfide nano sheet material
  • A kind of preparation method of molybdenum disulfide nano sheet material
  • A kind of preparation method of molybdenum disulfide nano sheet material

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Effect test

Embodiment 1

[0042]A 5 mg / mL electrolyte solution was prepared with tetrabutylammonium hydrogen sulfate as the electrolyte and deionized water as the solvent. Take 10 g of molybdenum disulfide powder (800 mesh), add 0.25 g of polyvinylpyrrolidone, and then add 5 mL of electrolyte solution, stir evenly, and use it as a molybdenum disulfide parent material. Titanium plates were used as cathode and anode electrode materials, and the electrode spacing was set to 5 cm. A 36V DC regulated power supply is used, and the positive and negative electrodes are applied to the anode and cathode respectively. The anode and cathode were inserted vertically into the electrolyte solution and the molybdenum disulfide parent material, respectively. The anode compartment is separated from the cathode compartment by a homogeneous cation exchange membrane. The electrolyte solution level in the anode compartment is slightly higher than the upper surface of the molybdenum disulfide parent material. When the ano...

Embodiment 2

[0044] Using tetrabutylammonium bromide as the electrolyte and deionized water as the solvent, a 7.5 mg / electrolyte solution was prepared. Take 10 g of molybdenum disulfide powder (800 mesh), add 0.25 g of xanthan gum, and then add 5 mL of electrolyte solution, stir evenly, and use it as a molybdenum disulfide parent material. Tungsten plates with anti-oxidation coating were used as cathode and anode electrode materials, and the electrode spacing was set to 5 cm. A 24V DC regulated power supply is used, and the positive and negative electrodes are applied to the anode and cathode respectively. The anode and cathode were inserted vertically into the electrolyte solution and the molybdenum disulfide parent material, respectively. The anode compartment is separated from the cathode compartment by a homogeneous cation exchange membrane. The electrolyte solution level in the anode compartment is slightly higher than the upper surface of the molybdenum disulfide parent material. ...

Embodiment 3

[0046] Using dodecyltrimethylammonium bromide as the electrolyte and deionized water as the solvent, a 2 mg / electrolyte solution was prepared. Take 10 g of molybdenum disulfide powder (800 mesh), add 0.25 g of polyvinylpyrrolidone, and then add 5 mL of electrolyte solution, stir evenly, and use it as a molybdenum disulfide parent material. Nickel plates with anti-oxidation coating were used as cathode and anode electrode materials, and the electrode spacing was set to 5 cm. A 24V DC regulated power supply is used, and the positive and negative electrodes are applied to the anode and cathode respectively. The anode and cathode were inserted vertically into the electrolyte solution and the molybdenum disulfide parent material, respectively. The anode compartment is separated from the cathode compartment by a homogeneous cation exchange membrane. The electrolyte solution level in the anode compartment is slightly higher than the upper surface of the molybdenum disulfide parent ...

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Abstract

The invention discloses a preparation method of a molybdenum disulfide nanosheet material, which is prepared by an electrochemical method, using an inert transition metal as an electrode, and an external circuit device regularly controls the directional reaction time of the cathode and anode and the electrode switching time interval, and uses an electrolyte as a medium to Molybdenum disulfide is prepared into a reaction slurry, and the molybdenum disulfide nanosheet material is obtained by controlling electrolyte cations to repeat intercalation-deintercalation reactions, centrifugation, drying and other post-processing steps. Most of the molybdenum disulfide nanosheet materials prepared by the invention are single-layer molybdenum disulfide two-dimensional materials, which belong to nanomaterials with direct band gaps, can be used as fluorescent materials, and can also be popularized and applied in light-emitting devices, photoelectric conversion, energy storage, catalysis, etc. field. The method is an environment-friendly, energy-saving, and easy-to-implement intelligent control nanomaterial preparation method.

Description

technical field [0001] The invention belongs to the technical field of preparation of molybdenum disulfide, in particular to a preparation method of a molybdenum disulfide nanosheet material. Background technique [0002] Molybdenum disulfide belongs to a kind of transition metal dichalcogenides (Transition Metal Dichalcogenides, TMDs). The metal molybdenum atoms and the sulfur atoms are connected by covalent bonds to form a sandwich-like interlayer, and the layers are connected by van der Waals force. This structure allows layers to slide easily from layer to layer like graphite. Molybdenum disulfide is a semiconductor with a certain energy level gap, and the energy level gap increases as the number of layers decreases. Few-layer or single-layer molybdenum disulfide changes from indirect bandgap to direct bandgap semiconductor, which is a two-dimensional material with good physical and chemical properties. In recent years, the applications of monolayer and few-layer moly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G39/06B82Y40/00
CPCC01G39/06B82Y40/00C01P2004/04C01P2002/84C01P2002/70
Inventor 陈宜波郑艾龙黄丽枚黄志民
Owner XIAMEN HONGLU TUNGSTEN MOLYBDENUM IND CO LTD
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