Molybdenum disulfide peeling method as well as molybdenum disulfide prepared by molybdenum disulfide peeling method and application thereof

Abstract

The invention relates to a molybdenum disulfide peeling method. The method comprises the following steps: (1) mixing molybdenum disulfide powder, water and a surface active agent to obtain a mixed solution; (2) performing ultrasonic peeling treatment on the mixed solution to obtain molybdenum disulfide. The surface active agent utilized by the molybdenum disulfide peeling method disclosed by the invention contains hydrophilic groups and hydrophobic groups, the hydrophobic groups can be stably combined with molybdenum disulfide, and the hydrophilic groups can make molybdenum disulfide be stablydispersed into water; under the action of the hydrophilic groups and the hydrophobic groups, the molybdenum disulfide powder can be emulsified into colloid, dispersity of the molybdenum disulfide powder in a water solution can be improved, the molybdenum disulfide powder can be peeled more completely, and the peeled molybdenum disulfide can be stably dispersed into the water solution; furthermore, molybdenum disulfide has good antibacterial activity, the mass concentrate of molybdenum disulfide in suspension liquid is larger than or equal to 0.089 mg / mL; when the mass concentration of molybdenum disulfide is 10 mg / L, the antibacterial rate is larger than or equal to 12%; when the mass concentration of molybdenum disulfide is 20 mg / L, the antibacterial rate is larger than or equal to 26%;when the mass concentration of molybdenum disulfide is 50 mg / L, the antibacterial rate is larger than or equal to 70%.

Description

technical field [0001] The invention belongs to the field of nanometer materials, and in particular relates to a molybdenum disulfide stripping method, the prepared molybdenum disulfide and its use. Background technique [0002] Molybdenum disulfide is a layered semiconductor material, which has broad application prospects in many fields such as lubrication, ion exchange, adsorption, conduction, separation and catalysis. Compared with ordinary molybdenum disulfide, nano-molybdenum disulfide has many more excellent properties, such as: large surface area, many reaction sites, etc. Each layer of nanomolybdenum disulfide consists of a layer of molybdenum atoms and two layers of sulfur atoms. As one of the transition metal dichalcogenides, molybdenum disulfide can exist as multiple polymorphs including 2H and 1T phases, and their phases can be determined by the coordination modes between transition metal and chalcogen atoms. [0003] However, the molybdenum disulfide sheets ar...

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Problems solved by technology

The preparation process of the method is complicated, and the preparation process requires high ambient temperature, which is difficult for industrial production, and the prepared molybdenum disulfide nanosheets have organic functional groups on the surface, so they cannot be applied in the fields of biology and water treatment, which limits their development.

[0005] CN107365259A discloses a class of molybdenum disulfide dispersant, molybdenum disulfide dispersion and its preparation method and application, said preparation method comprises: using aniline oligomer and / or its derivative as molybdenum disulfide dispersant, and the dispersion Molybdenum disulfide and molybdenum disulfide are simply mixed in the dispersion medium, and through the physical interaction between the two, a simple liquid phase exfoliation method can be used to obtain two-dimensional molybdenum disulfide nanosheets. The ambient temperature requirements are high, and the prepared molybdenum disulfide contains organic media, which cannot be applied in the fields of biology and water treatment, which limits its development

Due to the use of organic solvents in the preparation process, the temperature in the ultrasonic process is high and it is easy to explode, which is highly dangerous, and the prepared molybdenum disulfide contains organic media, which cannot be used in the fields of biology and water treatment. its development

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