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Method for manufacturing nano pipes

A technology of nanotubes and nanomaterials, which is applied in the field of preparation of nanotubes, can solve the problems of complicated steps and inability to assemble multiple nanomaterials, and achieves the effect of simple preparation method and low requirements for preparation conditions.

Inactive Publication Date: 2013-01-16
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method has complicated steps and is only suitable for the assembly of nanowires, and cannot successfully assemble a variety of nanomaterials.

Method used

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preparation example Construction

[0030] The embodiment of the present invention discloses a method for preparing nanotubes, comprising the following steps:

[0031] (A) Dropping nanomaterials or nanomaterial assemblies onto a support covered with a carbon film to obtain a composite carbon film;

[0032] (B) making the composite carbon film described in step (A) form cracks to obtain a composite carbon film with cracks;

[0033] (C) The composite carbon film with cracks described in step (B) is irradiated with electron beams to curl to obtain nanotubes.

[0034] According to the present invention, firstly, the nanomaterial or the nanomaterial assembly is dropped onto the support covered with the carbon film to obtain the composite carbon film. In order to facilitate the formation of the composite carbon film, the assembly of rice materials or nanomaterials is first dispersed in a solvent to obtain a mother liquor; then the mother liquor is added dropwise on a support covered with a carbon film to obtain a com...

Embodiment 1

[0046] Add 1.000 grams of polyvinylpyrrolidone (PVP) with a molecular weight of 40,000, 0.0922 grams of sodium tellurite (Na 2 TeO 3 ), 33 milliliters of water, 1.67 milliliters of hydrazine hydrate with a mass percentage of 85% and 3.33 milliliters of ammonia water with a mass percentage of 25 to 28%; use magnetic stirring for 10 minutes to make it reach a homogeneous solution; put the polytetrafluoroethylene reactor into The steel sleeve was reacted at 180°C for 3 hours, and after natural cooling, a mixed solution containing tellurium nanowires with a diameter of 7 nanometers and a length of hundreds of microns was obtained.

[0047] Take 5 ml of the above-mentioned mixed solution of tellurium nanowires, add 12 ml of acetone, perform centrifugation at 5000 rpm for 5 minutes, and remove the supernatant. Add 12 ml of water, disperse evenly, perform centrifugation at 5000 rpm for 5 minutes, and remove the supernatant. Add 12 ml of ethanol, disperse evenly, perform centrifugat...

Embodiment 2

[0050] Take 0.130 g of copper acetylacetonate, 0.073 g of zinc acetate, 0.045 g of tin chloride and 0.033 g of sulfur and add them to 10 ml of oleylamine, stir evenly, then add them to a 25 ml three-necked flask; then heat to 110°C under nitrogen atmosphere , heated at 110°C for 30 minutes, the solution turned brown. Then heated to 280° C., and heated at 280° C. for 1 hour to obtain a mixed solution containing copper, zinc, tin and sulfur nanoparticles.

[0051] Take 5 ml of the above-mentioned mixed solution containing copper-zinc-tin-sulfur nanoparticles, add 12 ml of n-hexane, centrifuge at 5000 rpm for 5 minutes, and remove the supernatant. Add 12 ml of n-hexane, disperse evenly, perform centrifugation at 5000 rpm for 5 minutes, and remove the supernatant. Add 12 ml of ethanol, disperse evenly, perform centrifugation at 5000 rpm for 5 minutes, and remove the supernatant. Add 1 milliliter of ethanol and disperse evenly to form a mother liquor, then drop the mother liquor ...

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Abstract

The invention provides a method for manufacturing nano pipes. The method comprises the following steps of: dripping nano materials or an assembly of the nano materials to a support covered with a carbon film to obtain a compound carbon film; cracking the compound carbon film to obtain a cracked compound carbon film; and illuminating the cracked compound carbon film by using electron beams for crimping to obtain the nano pipe. By the method, the nano pipe can be obtained only through 3 steps, the manufacturing requirement is relatively low, and an expensive instrument is not required; the method is simple; and the nano pipe is formed by the carbon film crimped cladding nano materials or the assembly of the nano materials, and the method does not have limits on the nano materials or the assembly of the nano materials, so that the method is suitable for assembling a plurality of kinds of nano materials.

Description

technical field [0001] The invention relates to the field of nanomaterials, in particular to a preparation method of nanotubes. Background technique [0002] Nanomaterials refer to materials that have at least one dimension in the three-dimensional space in the nanoscale range (1-100nm) or are composed of them as basic units. Nanomaterials have many advantages. On the one hand, nanomaterials have a high surface-to-volume ratio, so they have high chemical activity; on the other hand, they have a high aspect ratio, and particle transport does not exist in one dimension. Constraints are conducive to technical applications. [0003] The preparation of nanomaterials and the assembly of nano-units have become one of the hottest research fields in the field of materials science. British "Nature-Materials" (Nature Materials, Issue 6, 2007, page 841) pointed out that the development of physical and chemical properties of materials not only depends on their own shape and size, but a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B82B3/00B82Y40/00
Inventor 俞书宏徐杰刘建伟
Owner UNIV OF SCI & TECH OF CHINA
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