Method for preparing multi-wall carbon nanotube-palladium composite material and use thereof

A technology of multi-walled carbon nanotubes and composite materials, which is applied in the field of preparing multi-walled carbon nanotubes-palladium composite materials, and achieves the effects of mild reaction conditions, improved dispersion, and simple steps

Inactive Publication Date: 2010-10-20
SHANGHAI QIBAO HIGH SCHOOL
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Problems solved by technology

However, there is a strong van der Waals force between carbon nanotubes and a large length-to-distance ratio, so it is easy to form large aggregates. How to improve the dispersion performance of carbon nanotubes and eliminate large agglomerates has become a must for the preparation of carbon nanotube composites. problems to face

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  • Method for preparing multi-wall carbon nanotube-palladium composite material and use thereof
  • Method for preparing multi-wall carbon nanotube-palladium composite material and use thereof
  • Method for preparing multi-wall carbon nanotube-palladium composite material and use thereof

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Embodiment Construction

[0020] Below in conjunction with the accompanying drawings and embodiments of the present invention are described in further detail:

[0021] The invention provides a method for preparing multi-walled carbon nanotube-palladium composite materials. During the test process, X-ray powder diffraction is tested with Bruker D8 X-ray diffractometer; transmission electron microscope is tested with JEOL2001TEM microscope under 200KV, and the attached Test electron energy spectrum; gas chromatography-mass spectrometer is hp 6890 and hp 5973 respectively; H-NMR is tested by JNM-MY60FT instrument at 300MHz, CDCl3 condition. The rest of the medicines used were obtained from commercial sources and used directly without treatment.

[0022] Take 1.0 g of carbon nanotubes in 50 ml of nitric acid and reflux at 150 degrees Celsius for two hours. After stopping the reaction, pour the above uniform black system into a centrifuge test tube. min, centrifuged and washed 4 times with distilled water ...

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Abstract

The invention relates to a method for preparing a multi-wall carbon nanotube-palladium composite material and use thereof. The method comprises the following steps: refluxing carbon nanotubes in hydrogen nitrate, and after the reaction is finished, pouring the reaction solution into a centrifugal test tube to perform centrifugal washing by using distilled water and ethanol, and drying the obtained product in an oven; and dissolving PdC12 in water, adding the multi-wall carbon nanotubes treated by the hydrogen nitrate into the solution, processing the solution in ultrasonic waves in a N2 atmosphere, adjusting the pH value of the solution to 8 to 9 by using ammonia water, slowing dripping the mixture into aqueous solution of NaBH4 in ultrasonic waves, performing ultrasonic wave treatment continuously after the dripping is finished, centrifuging the resulting product, washing the product with distilled water and then with absolute ethanol and drying the product. The key design point of the invention lies in that the ultrasonic wave treatment improves the dispersibility of the particles of the product metal. The method of the invention adopts simple steps, allows the reactions to be performed under mild reaction conditions and at normal temperature and saves energy.

Description

technical field [0001] The invention relates to the field of nanotechnology, in particular to a method for preparing a multi-walled carbon nanotube-palladium composite material and its application. Background technique [0002] Nanomaterials, especially metal nanoparticles, have become a new class of materials of widespread interest due to their special electrical, optical, magnetic and catalytic properties. [0003] In recent years, more and more work has been devoted to developing methods for chemical modification of carbon nanotube surfaces, in order to graft other more attractive properties on carbon tubes. The new composite material formed by pairing two nanomaterials, carbon nanotubes and metal nanoparticles, may have even better properties. Based on the above-mentioned good properties of carbon tubes and metal nanoparticles, the unique catalytic properties of carbon nanomaterials-metal nanoparticles composites have attracted extensive attention. Since the first carb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/44B01J37/34C07C69/618C07C67/343
Inventor 张俊霞乔山
Owner SHANGHAI QIBAO HIGH SCHOOL
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