Method for preparing molybdenum disulfide-doped graphene fibers

A graphene fiber and molybdenum disulfide technology, which is applied in the fields of fiber chemical characteristics, rayon manufacturing, textiles and paper making, can solve the complex processing technology of composite graphene fiber, poor macroscopic assembleability, long production cycle and other problems , to achieve the effect of easy industrial production, low equipment requirements and good stability

Inactive Publication Date: 2015-07-01
DONGHUA UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] Graphene has also been expected to be prepared into a fiber structure for a long time, but graphene has stable properties, limited dispersion in common solvents and poor macroscopic assembleability, making it difficult for graphene to be wet-spun as easily as carbon nanotubes and dry spinning to make macroscopic fibers
Doping molybdenum disulfide into graphene fibers can effectively improve its electrical conductivity and stability. The existing processing technology for preparing composite graphene fibers is complicated, the production cycle is long, and the requirements for equipment are high. Therefore, the simpler preparation is more The method of functional composite graphene fibers becomes a research hotspot

Method used

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  • Method for preparing molybdenum disulfide-doped graphene fibers
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  • Method for preparing molybdenum disulfide-doped graphene fibers

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Weigh 20mg of molybdenum disulfide, 200mg of graphite oxide, add 10g of distilled water, ultrasonicate for 2h, add 600mg of sodium deoxycholate, stir magnetically at a speed of 600r / min for 24h, and prepare sodium deoxycholate / molybdenum disulfide-oxide Graphene gel. Use a syringe pump to extrude the gel into a watch glass containing absolute ethanol at a speed of 1 mL / min, and replace the absolute ethanol 10 times in time. After washing for 3 hours, suck out the absolute ethanol. After the absolute ethanol evaporates, 2 hours Finally, molybdenum disulfide-graphene oxide fibers are obtained. The prepared molybdenum disulfide-graphene oxide fibers were added with hydroiodic acid for reduction for 3 hours to obtain graphene fibers. Washing 5 times with ultrapure water, standing for 6 hours to obtain hydrated molybdenum disulfide nanosheet-graphene fibers, and drying for 2 hours again to obtain graphene fibers doped with molybdenum disulfide nanosheets.

[0028] like f...

Embodiment 2

[0030] Weigh 40mg of molybdenum disulfide, 200mg of graphite oxide, add 10g of distilled water, ultrasonicate for 1h, add 600mg of sodium deoxycholate, stir magnetically at a speed of 300r / min for 20h, and prepare sodium deoxycholate / molybdenum disulfide-oxidized Graphene gel. Use a syringe pump to extrude the gel into a watch glass containing absolute ethanol at a speed of 0.6 mL / min, and replace the absolute ethanol 8 times in time. After washing for 4 hours, suck out the absolute ethanol. After the absolute ethanol evaporates, After 1 h, graphene oxide fibers doped with molybdenum disulfide were obtained. The prepared graphene oxide fibers doped with molybdenum disulfide were added with hydroiodic acid and reduced for 2 hours to obtain graphene fibers. Washing with ultrapure water for 3 times, standing for 4 hours to obtain hydrated molybdenum disulfide nanosheet-graphene fibers, and drying for 1 hour again to obtain graphene fibers doped with molybdenum disulfide nanoshee...

Embodiment 3

[0032] Weigh 20mg of molybdenum disulfide and 100mg of graphite oxide, add 10g of distilled water, ultrasonicate for 1.5h, add 200mg of sodium deoxycholate, stir magnetically at a speed of 500r / min for 24h, and prepare sodium deoxycholate / molybdenum disulfide - Graphene oxide gel. Use a syringe pump to extrude the gel into a watch glass containing absolute ethanol at a speed of 0.8 mL / min, and replace the absolute ethanol 5 times in time. After washing for 3.5 hours, suck out the absolute ethanol, and wait for the absolute ethanol to evaporate completely. , Graphene oxide fibers doped with molybdenum disulfide were obtained after 1.5h. The prepared graphene oxide fibers doped with molybdenum disulfide were added with hydroiodic acid and reduced for 2.5 hours to obtain graphene fibers. Wash 4 times with ultrapure water, let stand for 5h to obtain hydrated molybdenum disulfide nanosheet-graphene fiber, dry again for 1.5h to obtain graphene fiber doped with molybdenum disulfide ...

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Abstract

The invention relates to a method for preparing molybdenum disulfide-doped graphene fibers. The method comprises the following steps: dispersing graphite oxide and molybdenum disulfide in water, and performing ultrasonic treatment, thereby obtaining molybdenum disulfide and graphite oxide dilute dispersion; adding sodium deoxycholate, and stirring, thereby obtaining sodium deoxycholate/molybdenum disulfide-graphene oxide gel; extruding the sodium deoxycholate/molybdenum disulfide-graphene oxide gel in anhydrous ethyl alcohol for washing by using an injector, and sucking the anhydrous ethyl alcohol, thereby obtaining graphene oxide fibers after the anhydrous ethyl alcohol is completely evaporated; and adding hydroiodic acid for reacting, washing, and drying, thereby obtaining the molybdenum disulfide-doped graphene fibers. The method disclosed by the invention is simple in process and is easy for industrial production, the prepared molybdenum disulfide-doped graphene fibers are high in conductivity, and have high flexibility and have huge application prospects in the fields of energy storage devices, photovoltaic devices and sensors.

Description

technical field [0001] The invention belongs to the field of preparation of graphene fibers, in particular to a method for preparing graphene fibers doped with molybdenum disulfide. Background technique [0002] Due to its unique microstructure and physical and chemical properties, graphene-like molybdenum disulfide still has many advantages of graphene while overcoming the shortcomings of zero-bandgap graphene, so it can be used in secondary batteries, field effect transistors, sensors, electrophoresis Luminescence, electrical storage and many other fields have broad application prospects. However, improving the preparation method and optimization of graphene-like molybdenum disulfide, improving the structure and performance of corresponding devices has become a key bottleneck hindering its commercialization process and industrialization development. [0003] Graphene is a new type of two-dimensional carbon nanomaterial. Because of the high mechanical strength, elasticity...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/12D01F1/10
Inventor 李耀刚李佳慧王宏志张青红侯成义
Owner DONGHUA UNIV
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