Method for efficiently preparing high-quality molybdenum disulfide nano-wires

Abstract

The invention provides a method for efficiently preparing high-quality molybdenum disulfide nano-wires. The method comprises the following steps: firstly, preparing a proper amount of a surfactant solution; then adding a proper amount of a structure-directing agent into the solution and stirring and mixing to obtain a solution A; secondly, weighing a proper amount of ammonium molybdate and thioacetamide as a molybdenum source and a sulfur source respectively, and uniformly stirring in a de-ionized water solution to obtain a solution B; thirdly, slowly dropwise adding the solution A into the solution B; then adding a proper amount of a reducing agent hydrazine hydrate; finally, after the hydrazine hydrate is completely added, adjusting the temperature of an oil bath pot to be 100 to 120 DEGC, wherein the reaction time is 10 to 24h and the stirring speed of a shuttle-shaped magneton is 20 to 60rpm; after reaction is finished, centrifuging a reaction product for a plurality of times andwashing with de-ionized water.

Description

technical field [0001] The invention relates to the technical field of nanometer materials, in particular to a method for efficiently preparing high-quality molybdenum disulfide nanowires. Background technique [0002] Molybdenum disulfide is a two-dimensional transition metal sulfide, which has a graphene-like layered structure and has attracted much attention. Due to its unique electrical, acoustic, optical and mechanical properties, it has been widely studied in the application fields of lithium-ion battery anode materials, photocatalytic materials, energy storage materials and electrochemical sensors. [0003] In its crystal structure, similar to graphene, the interlayer atoms are combined in the form of covalent bonds, and the layers are combined by Van der Waals force. The interplanar spacing of the (002) crystal plane is 0.61nm, which is The size is significantly larger than lithium ions, and its theoretical capacity is as high as 1290mAh / g, much higher than graphene...

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Problems solved by technology

[0005] In the prior art, according to the search by the inventor, it is found that the research on molybdenum disulfide basically focuses on the preparation of molybdenum disulfide nanosheets, and there are few reports involving other nanostructures.

It is only found that the Chinese patent CN104071846A discloses a method for preparing molybdenum disulfide nanowires, which uses sulfur powder and molybdenum oxide as raw materials, and obtains molybdenum disulfide nanowires after solid phase calcination, and it can be seen from the accompanying drawings , the quality of the prepared molybdenum disulfide nanowires is extremely poor and contains more impurities, which only realizes the preparation of molybdenum disulfide nanowires.

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