A kind of preparation method of magnetic layered molybdenum disulfide nanosheet

A molybdenum disulfide, magnetic layer technology, applied in the directions of molybdenum sulfide, nanotechnology, nanotechnology, etc., can solve problems such as no reports on the preparation of magnetic molybdenum disulfide nanosheets, etc. simple effect
CN103787417BActive Publication Date: 2015-12-30SHENZHEN INST OF ADVANCED TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHENZHEN INST OF ADVANCED TECH
Publication Date
2015-12-30

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Abstract

The invention provides a preparation method of magnetic layered molybdenum disulfide nanosheets. The preparation method comprises the following steps that Step1, molybdenum disulfide is added into stripping solvents, and a molybdenum disulfide dispersion liquid with an initial concentration in a ranged of 0.5-2 mg / ml is prepared, the molybdenum disulfide dispersion liquid is conducted ultrasonic dispersion 0.5-8 h at a temperature of 25-35 DEG C, a surface tension rang of the molybdenum disulfide dispersion liquid is 40-65 mJ / m2 tested at a temperature of 25 DEG C; Step2, the molybdenum disulfide dispersion liquid after being ultrasonic dispersed is centrifuged, upper suspensions of the molybdenum disulfide dispersion liquid after being centrifuged is filtered, filter cakes acquired from the upper suspensions are heated to dry in a vacuum drying chamber at a temperature of 60-100 DEG C. By the adoption of a chemical solvent method and an ultrasonic oscillation condition, stripping among atomic layers are conducted, so that the striping and preparation of the two-dimensional layered molybdenum disulfide nanosheets with a strong ferromagnetic performance can be achieved. The preparation is simple in technology, easy to operate, low in cost and high in productivity.
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Description

technical field

[0001] The invention relates to the technical field of inorganic materials, in particular to a preparation method of two-dimensional layered magnetic nanosheets. Background technique

[0002] Two-dimensional layered nanomaterials with special properties have immeasurable application potential in the fields of semiconductors, microelectronic devices, and biomedicine, and have attracted great attention from scientists around the world. The research team of BorisI.Yakobson of Rice University in the United States reported the phenomenon that grain boundary defects and sulfur vacancies lead to the evolution of local hexagonal crystal structures into five-party or seven-party atomic structures through theoretical calculations, making molybdenum disulfide nanosheets possess magnetic properties. Theoretical calculations by SefaattinTongay et al. show that molybdenum disulfide nanosheets with zigzag edge effects have strong ferromagnetism. The existing technology mai...

Claims

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