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Hydrothermal synthetic method for coating carbon nanometer tube with molybdenum sulphide

A technology of hydrothermal synthesis and carbon nanotubes, which is applied in the field of hydrothermal synthesis of composite nanotubes, can solve the problems of high reaction temperature and complex reaction equipment system, and achieve the effect of low reaction temperature, simple reaction equipment and uniform coating

Inactive Publication Date: 2006-03-22
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this method also needs higher reaction temperature and more complex reaction equipment system, and the amount of single synthesis is also very little

Method used

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  • Hydrothermal synthetic method for coating carbon nanometer tube with molybdenum sulphide

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Mass percent concentration is that 0.5% sodium molybdate and 0.7% thiourea aqueous solution 60 milliliters are put into the polytetrafluoroethylene liner of the autoclave of 100mL, then add the multi-walled carbon nanotube (diameter 20~40nm) of 100mg , the carbon nanotubes were uniformly dispersed in the solution by ultrasonic treatment. The polytetrafluoroethylene liner containing the mixture was sealed in a stainless steel jacket and kept at a constant temperature of 240°C for 24 hours. Then cool naturally, filter and rinse with deionized water repeatedly. Finally, after vacuum drying, a composite nanotube sample of molybdenum sulfide-coated carbon nanotubes is obtained. X-ray diffraction, high-resolution transmission electron microscopy and energy dispersive spectrum analysis prove that there are 2 to 4 layers of molybdenum sulfide uniformly coated on the surface of carbon nanotubes, and the molybdenum sulfide coated on the surface of carbon nanotubes has a good cry...

Embodiment 2

[0018] Mass percentage concentration is that 0.2% sodium molybdate and 0.2% thiourea aqueous solution 60 milliliters are put into the polytetrafluoroethylene liner of the autoclave of 100mL, then add the multi-walled carbon nanotube of 60mg, make carbon with ultrasonic treatment The nanotubes are uniformly dispersed in the solution. The polytetrafluoroethylene liner containing the mixture was sealed in a stainless steel jacket and kept at a constant temperature of 250°C for 20 hours. Then cool naturally, filter and rinse with deionized water repeatedly. Finally, after vacuum drying, a composite nanotube sample of molybdenum sulfide-coated carbon nanotubes is obtained. X-ray diffraction, high-resolution transmission electron microscopy and energy dispersive spectrum analysis prove that there are 2 to 3 layers of molybdenum sulfide uniformly coated on the surface of carbon nanotubes, and the molybdenum sulfide coated on the surface of carbon nanotubes has a good crystal structu...

Embodiment 3

[0020] Mass percent concentration is that 1.5% ammonium molybdate and 2.0% thiourea aqueous solution 60 milliliters are put into the polytetrafluoroethylene liner of the autoclave of 100mL, then add the multi-walled carbon nanotube of 300mg, make carbon with ultrasonic treatment The nanotubes are uniformly dispersed in the solution. The polytetrafluoroethylene liner containing the mixture was sealed in a stainless steel jacket and kept at a constant temperature of 230°C for 30 hours. Then cool naturally, filter and rinse with deionized water repeatedly. Finally, after vacuum drying, a composite nanotube sample of molybdenum sulfide-coated carbon nanotubes is obtained. X-ray diffraction, high-resolution transmission electron microscopy and energy scatter spectrum analysis prove that there are 2 to 6 layers of molybdenum sulfide uniformly coated on the surface of carbon nanotubes, and the molybdenum sulfide coated on the surface of carbon nanotubes has a good crystal structure ...

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Abstract

Compound nano pipes coated by molybdenum sulphide are produced by water heating synthesis, including: first to put the molybdate and thiourea in the water and the mass percent of molybdate is 0.2%-1.5%, the thiourea is 0.2%-2.0%, then disperse the nano pipes of C in the solvent by the super sonic wave, and the mass percent of it is 0.1%-0.5%, the mixture is then put into the non-corrosive steel tank which is full of Teflon to react, at 200-250deg.C for 20-40h. The 2-6 phase of molybdenum sulphide obtained by the transmission electron microscopic and energy scattering analyze. They can be used to prepare high performance compound material of tribology, catalytic carrier, and microprobe. The process is simple, and it could avoid using the H2S.

Description

technical field [0001] The invention relates to the preparation of heterogeneous nanocomposite materials, in particular to a hydrothermal synthesis method of molybdenum sulfide-coated carbon nanotube composite nanotubes. Background technique [0002] Since Iijima discovered carbon nanotubes in 1991, one-dimensional nanomaterials have been one of the research hotspots. After the successful synthesis of various nanotubes and nanowires, the synthesis of heterogeneous multilayer composite nanomaterials has attracted increasing attention in recent years. By combining different types of nanotubes or nanowires in the radial direction, one-dimensional composite nanomaterials of different types and functions can be prepared. Since carbon nanotubes have many excellent physical, chemical and mechanical properties, and the batch preparation method of carbon nanotubes is relatively mature, carbon nanotubes are used as templates to deposit metals or metal oxides on their surfaces by elec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C3/08C09C1/44C01B31/00
Inventor 陈卫祥徐铸德
Owner ZHEJIANG UNIV