Method for preparing boron nitride nanometer ring and tube

A technology of nanotubes and nanorings, applied in chemical instruments and methods, nitrogen compounds, inorganic chemistry, etc., can solve the problems of high cost and low yield, and achieve the effects of low cost, less environmental pollution and cost reduction

Inactive Publication Date: 2006-06-21
SHANDONG UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

It can be mainly divided into several categories such as arc discharge method, arc melting method, high temperature pyrolysis method, nanotube template method and laser evaporation method, but these preparation methods either require relatively expensive equipment or relatively harsh preparation conditions (such as high temperature and high pressure, etc. ), or the yield is relatively low. Therefore, it is of great significance to develop a method for preparing boron nitride nanotubes with simple operation, low cost, high yield and high purity.

Method used

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  • Method for preparing boron nitride nanometer ring and tube
  • Method for preparing boron nitride nanometer ring and tube
  • Method for preparing boron nitride nanometer ring and tube

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Experimental program
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Effect test

Embodiment 1

[0022] Embodiment 1: the preparation of boron nitride nano ring

[0023] The raw material for preparing boron nitride nanorings is H 3 BO 3 , Li 3 N and S.

[0024] First 0.31g H 3 BO 3 , 0.17g Li 3 N and 0.16gS were ground and mixed evenly, pressed into tablets at 20MPa, and then put into a quartz tube. After vacuumizing the quartz tube, it was filled with 1 atm of Ar gas. After heating the quartz tube to 600°C for 1 hour and then cooling down to room temperature naturally, the product is first treated with carbon disulfide to remove the sulfur contained in the product, then washed with deionized water and suction filtered 3-5 times. The product thus obtained is dried at 80° C. to obtain boron nitride nanorings.

[0025] figure 1 Shown is the X-ray diffraction pattern of the boron nitride nanoring prepared in this example. It can be seen from the figure that the crystallinity and purity of the sample are relatively good, and only hexagonal phase boron nitride is conta...

Embodiment 2

[0026] Embodiment 2: the preparation of boron nitride nanotube

[0027] The raw material for preparing boron nitride nanotubes is H 3 BO 3 , LiN 3 and S.

[0028] First 0.31g H 3 BO 3 , 0.17g Li 3 N and 0.16gS are ground and mixed evenly, pressed into a stainless steel sleeve with a diameter of 6mm at 20MPa, put the sleeve and raw materials into the quartz tube, and then vacuumize the quartz tube, and then fill it with 1 atm Ar gas. After heating the quartz tube to 700°C for 1 hour, and cooling down to room temperature naturally, the product is first treated with carbon disulfide to remove the sulfur contained in the product, then washed with deionized water and suction filtered 3-5 times. The product thus obtained was dried at 80° C. to obtain boron nitride nanotubes.

[0029] Figure 5 It is a scanning photo of boron nitride nanotubes prepared in this embodiment, and the tubular structure of boron nitride can be clearly seen from the figure.

Embodiment 3

[0030] Embodiment 3: the preparation of boron nitride nano ring

[0031] The raw material for preparing boron nitride nanorings is H 3 BO 3 , LiN 3 and NH 4 Cl.

[0032] First 0.31g H 3 BO 3 , 0.17g Li 3 N and 0.27gNH 4 Cl is ground and mixed evenly, pressed into pellets at 20MPa, then put into a quartz tube, vacuumized the quartz tube, and then filled with 1 atm of N 2 . After heating the quartz tube to 600° C. for 1 hour, and cooling down to room temperature naturally, the product is washed with deionized water and suction filtered 3-5 times. The product thus obtained is dried at 80° C. to obtain boron nitride nanorings.

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Abstract

A process for preparing boron nitride nanoring and nanopipe, belonging to the technical field of preparing nano material, which in detail is a process for preparing nano ring and nano pipe by applying the heated solid material producing gas or evaporated solid material producing pressure, the process is carried out under low pressure which avoids the high temperature and high pressure, the equipment needed is simple and mass production of low cost is easily to be realized. The raw material is common chemical agent or chemical materials and the process is simple, which is good for increasing the product yield and reduces the cost; the parameter of the reaction is easy to be monitored and controlled, the reaction mechanism is easy to be researched to find out the critical influencing factors and stabilizes the technological condition in a short time; the invention is also environment-friendly

Description

(1) Technical field [0001] The invention relates to a method for assisting the preparation of nanomaterials such as nanotubes and nanorings by using solid substances thermally decomposed to generate gas or solid substances vaporized to generate pressure, and belongs to the technical field of nanomaterial preparation. (2) Background technology [0002] Since the discovery of carbon nanotubes in 1991, the potential application of one-dimensional nanomaterials in electricity, light and mechanics has become the focus of material research, which has aroused extensive interest from physicists, material scientists and chemists. Boron nitride (BN) nanotubes are the same as carbon nanotubes, B and N atoms form a planar graphite-like structure in sp2 hybridization state. Therefore, while people are studying carbon nanotubes, it is expected that there must be nanotubes formed of B and N. The bandgap width of carbon nanotubes changes sensitively with the diameter and chirality of nanot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B21/064
Inventor 郝霄鹏吴拥中李红云陶绪堂蒋民华
Owner SHANDONG UNIV
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