Preparation method for molybdenum disulfide nanosheet with reactive group-containing surface

A reactive group, molybdenum disulfide technology, applied in the field of nanomaterials, can solve problems such as limiting the application range of molybdenum disulfide nanosheets, and achieve the effects of easy separation, good application prospects, and high synthesis safety.

Active Publication Date: 2014-06-04
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although these methods can prepare molybdenum disulfide nanosheets, the surface of the obtained molybdenum disulfide nanosheets does not have reactive groups (such as hydroxyl, carboxyl, or amino groups) that can continue to be functionalized, which greatly limits the ability of molybdenum disulfide nanosheets. scope of application

Method used

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  • Preparation method for molybdenum disulfide nanosheet with reactive group-containing surface
  • Preparation method for molybdenum disulfide nanosheet with reactive group-containing surface
  • Preparation method for molybdenum disulfide nanosheet with reactive group-containing surface

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Effect test

Embodiment 1

[0022] (1) 0.4 grams of molybdenum disulfide, 1.2 grams of n-butyllithium and 6.8 grams of n-hexane were added to the hydrothermal reaction kettle, heated at 100°C for 2 hours, then cooled to room temperature, centrifuged and mixed with n-hexane After washing 5 times, it was dried at 50° C. for 12 hours to obtain molybdenum disulfide powder intercalated with lithium ions.

[0023] (2) Add 0.4 gram of molybdenum disulfide powder, 1 gram of 1-thioglycerol, and 400 gram of water into a beaker for ultrasonication, the ultrasonic time is 1 hour, and the ultrasonic power is 300 Watts, that is, molybdenum disulfide nanosheets containing hydroxyl groups on the surface are prepared.

Embodiment 2

[0025] (1) Add 0.1 g of molybdenum disulfide, 0.5 g of n-butyllithium and 2 g of n-hexane together into a hydrothermal reactor, heat at 150°C for 0.5 hours, then cool to room temperature, and wash with n-hexane after centrifugation After 5 times, dry at 50° C. for 12 hours to obtain molybdenum disulfide powder intercalated with lithium ions.

[0026] (2) Add 0.1 gram of molybdenum disulfide powder, 0.2 gram of 3-mercaptopropionic acid, and 50 gram of water into a beaker for ultrasonication, the ultrasonic time is 3 hours, and the ultrasonic power is 200 Watt, that is, molybdenum disulfide nanosheets containing carboxyl groups on the surface are prepared.

Embodiment 3

[0028] (1) Add 0.25 g of molybdenum disulfide, 0.5 g of n-butyllithium and 2.5 g of n-hexane together into a hydrothermal reaction kettle, heat at 80°C for 3 hours, then cool to room temperature, and wash by centrifugation and n-hexane After 5 times, dry at 50° C. for 12 hours to obtain molybdenum disulfide powder intercalated with lithium ions.

[0029] (2) Add 0.2 gram of molybdenum disulfide powder, 2 gram of cysteine, and 20 gram of water into a beaker for the lithium ion intercalation prepared in step (1) for ultrasonication, the ultrasonic time is 1 minute, and the ultrasonic power is 1000 watts , that is, molybdenum disulfide nanosheets containing amino groups on the surface are prepared.

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Abstract

The invention discloses a preparation method for a molybdenum disulfide nanosheet with a reactive group-containing surface. The preparation method comprises the following steps: adding one part by weight of molybdenum disulfide, 2-5 parts by weight of n-butyllithium and 10-20 parts by weight of n-hexane into a hydrothermal reaction kettle, heating at 50-150DEG C for 0.5-12 hours, cooling to room temperature, performing centrifugal separation and n-hexane washing for five times, drying at 50DEG C for 12 hours so as to obtain molybdenum disulfide powder with lithium ion intercalation, adding 1 part by weight of molybdenum disulfide powder with lithium ion intercalation, 0.05-10 parts by weight of sulihydryl reagents with reactive groups, and 100-1000 parts by weight of water into a flask for performing ultrasonic treatment for one minute to five hours under 50-100 watt, to obtain molybdenum disulfide nanosheet with the reactive group-containing surface. The method is easily available, mild to react, simple to operate, and small in environmental pollution; the prepared nanosheet can be further functionalized, thus having good application prospects.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a preparation method of molybdenum disulfide nanosheets containing reactive groups on the surface. Background technique [0002] As an important layered nanomaterial, molybdenum disulfide has been widely used in many fields such as lubricants, catalysis, energy storage, and composite materials due to its unique layered structure. In addition, compared with other layered materials, molybdenum disulfide has an adjustable energy band gap, so it has a bright application prospect in the field of optoelectronic devices. It is difficult to prepare molybdenum disulfide with a layered structure by general chemical and physical methods. At present, the main methods that can be used are: mechanical force stripping method, liquid phase ultrasonic method and lithium ion intercalation method. Although these methods can prepare molybdenum disulfide nanosheets, the surfa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G39/06B82Y30/00B82Y40/00
Inventor 周立杨尧何本钊
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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