Nanorods or nanowires formed by carbon nanotubes filled with metal sulfide in inner cavities, and preparation method thereof

A metal sulfide, carbon nanotube technology, applied in the preparation of sulfide/polysulfide, chemical instruments and methods, nanotechnology for materials and surface science, etc., can solve unfavorable carbon nanotubes, carbon nanotubes Truncation etc.

Inactive Publication Date: 2015-09-16
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a nanorod or nanowire with metal sulfide filling in the inner cavity of carbon nanotubes and its preparation method, so as to solve the problems of truncated carbon nanotubes and unfavorable research on the properties of substances inside carbon nanotubes.

Method used

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  • Nanorods or nanowires formed by carbon nanotubes filled with metal sulfide in inner cavities, and preparation method thereof
  • Nanorods or nanowires formed by carbon nanotubes filled with metal sulfide in inner cavities, and preparation method thereof
  • Nanorods or nanowires formed by carbon nanotubes filled with metal sulfide in inner cavities, and preparation method thereof

Examples

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preparation example Construction

[0034] The preparation method of the above-mentioned carbon nanotube lumen filled with metal sulfide nanorods or nanowires according to the present invention comprises the steps of:

[0035] Step 1: Select a carbon nanotube epoxy porous membrane with openings at both ends, and put the carbon nanotube epoxy porous membrane into a diffusion device to fix it.

[0036] In one embodiment, the above step 1 is specifically performed as follows: select a carbon nanotube epoxy porous membrane with openings at both ends, put the carbon nanotube epoxy porous membrane into a diffusion device and fix it, and the carbon nanotube epoxy porous membrane The preparation method of porous film comprises:

[0037](1) Preparation of carbon nanotube arrays: put silicon wafers evaporated with aluminum or aluminum oxide into a tube furnace, and grow carbon nanotube arrays by chemical vapor deposition. The chemical vapor deposition methods include:

[0038] Place the silicon wafer containing the catal...

Embodiment 1

[0051] In the electron beam evaporation equipment Ei-5z, 10nm Al and 1nm Fe were evaporated successively at the speed of 0.3nm / s and 0.1nm / s to the polished surface of a 4inch diameter single crystal silicon wafer. Place the silicon chip on which the catalyst is vapor-deposited in the middle of a quartz tube with an inner diameter of 1 inch. First pass 300 sccm of argon gas for 10 minutes to remove the air in the quartz tube. After reducing the argon flow rate to 100 and feeding 40 sccm of hydrogen, the temperature was raised from room temperature to 770° C. within 13. After the temperature was stabilized, 30 sccm of ethylene was introduced and kept for 10. When complete, stop ethylene flow and begin cooling. When the temperature drops below 700°C, the hydrogen flow is stopped. After the temperature continued to drop to room temperature, the prepared carbon nanotube array was taken out and the argon gas was stopped.

[0052] The carbon nanotube array is transferred to a pe...

Embodiment 2

[0056] The operation method is the same as Example 1. When preparing epoxy resin, the masses of each component are: SPI-PON 812: 2.7g NMA: 0.7g DDSA: 1.7g DMP-30: 0.07g. After the embedding is completed, it is sliced, and the slice thickness of the slicer is changed to 12 microns, and the speed is reduced to 50 rpm, so as to adapt to the hardness of the epoxy resin of this kind of ratio. Replace the deionized water on one side of the diffusion device with exhausted 0.1M sodium hydrosulfide ethanol solution, and replace the ultrapure water in the opposite diffusion cell with 0.1M copper acetate ethanol solution for 72 hours of diffusion. Other conditions remain unchanged, and the obtained carbon nanotubes are filled with metal copper sulfide nanorods.

[0057] see figure 2 and image 3 , figure 2 It is the nanorod or nanowire of a kind of carbon nanotube lumen filling metal sulfide described in the present invention and preparation method thereof in the TEM picture of copp...

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Abstract

The invention discloses nanorods or nanowires formed by carbon nanotubes filled with metal sulfide in inner cavities, and a preparation method thereof. A carbon nanotube epoxy porous membrane is used for replacing truncated dispersed carbon nanotubes in carbon nanotube internal filling experiments and studies. In the porous membrane, the outside of the carbon nanotubes is protected by a high-molecular substrate, and the inner walls of the carbon nanotubes are the only places that the carbon nanotubes can contact a precursor. That is to say, it can be ensured that the metal sulfide can be generated only inside the carbon nanotubes. Also, the diffusion capacities of substances on the two sides of a diffusion tank upon the carbon nanotubes are different, and the carbon nanotube array exists in a form of a membrane. Therefore, different concentrations or pressures can be configured on the two sides of the membrane, and the substances on the two sides can enter the inside of the carbon nanotubes under control. Therefore, a reaction product can be just generated inside the carbon nanotubes. With the method, the carbon nanotubes do not need to be truncated with severe conditions, and carbon nanotube property is not influenced. With the method, ultra-long nanowires with a uniform size can be prepared.

Description

technical field [0001] The invention relates to a preparation method for filling the inner cavity of a carbon nanotube with metal sulfide nanorods or nanowires, and filling the inner cavity of the carbon nanotube with metal sulfide nanorods or nanowires. Background technique [0002] Carbon nanotube is a hollow one-dimensional carbon nanomaterial discovered by Dr. Iijima in 1991, which is formed by curling one or more layers of graphene along a specific angle. In addition to external modification and compounding, the internal filling of carbon nanotubes is another important direction of carbon nanotube research. The size of the nano-cavities of carbon nanotubes is very small, and some can even be smaller than 1nm. Theoretical studies have shown that chemical reactions in such a confined space inside carbon nanotubes will be very different from reactions under ordinary conditions. This special property of the inner cavity of carbon nanotubes has aroused the interest of many...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/12C01G5/00C01B17/20C01B31/02B82Y30/00
Inventor 杨朝晖吴强张晓华
Owner SUZHOU UNIV
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