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Shape-controlled preparation method of MoS2 nano particles

A nanoparticle, morphology technology, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc.

Inactive Publication Date: 2018-06-29
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although many patents and literatures have reported the use of hydrothermal method to synthesize MoS 2 , but there is no controllable synthesis of MoS with different morphologies in the Chinese patent 2 Report on Nanoparticles

Method used

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  • Shape-controlled preparation method of MoS2 nano particles
  • Shape-controlled preparation method of MoS2 nano particles
  • Shape-controlled preparation method of MoS2 nano particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Dissolve 4mmol ammonium molybdate and 112mmol thiourea in 140mL deionized water and stir until completely dissolved. At this time, the pH value is 5.3. After fully stirring, transfer it to a 200mL hydrothermal kettle, and heat it at 220°C for 18 hours. After the water heat is completed, Naturally cooled to room temperature, suction filtered, washed, and vacuum dried at 60°C to obtain MoS 2 Sample MoS 2 -5.3.

Embodiment 2

[0025] Dissolve 4mmol ammonium molybdate and 112mmol thiourea in 140mL deionized water and stir until completely dissolved, add hydrochloric acid to adjust the pH value of the solution to 3.0, stir well and transfer to a 200mL hydrothermal kettle, heat at 220°C for 18h, and heat After completion, naturally cool to room temperature, filter with suction, wash, and dry in vacuum at 60°C to obtain MoS 2 Sample MoS 2 -3.0.

Embodiment 3

[0027] Dissolve 4mmol ammonium molybdate and 112mmol thiourea in 140mL deionized water and stir until completely dissolved, add hydrochloric acid to adjust the pH value of the solution to 0.9, stir well and transfer to a 200mL hydrothermal kettle, heat at 220°C for 18h, and heat After completion, naturally cool to room temperature, filter with suction, wash, and dry in vacuum at 60°C to obtain MoS 2 Sample MoS 2 -0.9.

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Abstract

The invention discloses a shape-controlled preparation method of MoS2 nano particles. The shape-controlled preparation method disclosed by the invention mainly comprises the following steps: sequentially adding a molybdenum source and a sulfur source into deionized water for stirring until the substances are completely dissolved, adding acid or alkali and adjusting the pH value of a solution to acertain value, wherein the ratio of the molybdenum source to the sulfur source is (1 to 2) to (1 to 6) and the pH value is 0.1 to 14; putting the obtained solution into a hydrothermal reactor, carrying out static reaction at the reaction temperature of 160 to 350 DEG C for 2 to 72 hours; after the reaction is ended, cooling, washing and carrying out vacuum drying to obtain shape-controlled MoS2 nano particles. The synthetic method disclosed by the invention has the advantages of mild conditions, simple operation, controllable particle shape, homogeneous products, high yield and the like. The MoS2 synthesized by the preparation method disclosed by the invention has a good application prospect in the fields of gasoline and diesel hydrodesulfurization, photoelectric catalysis, lithium ion batteries, super capacitors, lubrication and the like.

Description

technical field [0001] The present invention relates to a kind of MoS 2 The invention discloses a method for preparing nanoparticles with controllable morphology, which belongs to the field of inorganic nanometer materials. Background technique [0002] MoS 2 It is a type of two-dimensional inorganic compound with a typical layered structure. The atoms in the layer are bonded by strong chemical bonds, and the layers are combined by weak van der Waals force. It has good optical, electrical, lubricating and catalytic properties. In recent years, become a research hotspot. According to the existing research basis, the active center of molybdenum disulfide as a catalyst is located at the edge of the molybdenum disulfide particle, so the smaller the particle, the more exposed edge, and the higher the activity. [0003] MoS 2 As an important component of a hydrogenation catalyst, it has important applications in hydrodesulfurization and hydrodeoxygenation. At present, a large...

Claims

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Application Information

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IPC IPC(8): C01G39/06B82Y30/00
CPCC01G39/06B82Y30/00C01P2002/72C01P2002/82C01P2004/04
Inventor 李灿蒋宗轩张岑刘铁峰
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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