Preparation of silicon dioxide nano-tube

A technology of silicon dioxide and nanotubes, which is applied in the direction of silicon oxide, chemical instruments and methods, and single crystal growth. It can solve the problems of small aspect ratio, large diameter distribution, and low yield of nanotubes. The effect of large ratio, uniform size and simple process flow
CN101280457AInactive Publication Date: 2008-10-08TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
Publication Date
2008-10-08
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention provides a preparation method of silicon dioxide nano-tubes, which includes the following steps. (1) The ethanol solution of tartrate is in preparation. The ultrasonic is implemented until the tartrate is dissolved completely, so that a the first solution can be obtained, wherein the concentration of tartrate is 0.01 to 0.04mol / L. (2) The ammonia solution with the weight percentage concentration of 24% to 28% is added to the first solution obtained from the first step, thus a the second solution is obtained, wherein the volume ratio of the ammonia solution and the first solution is 0.2 to 0.6. (3) In a state of agitation, the silicon ester is dropped into the second solution obtained from the second step within 0 to 2 hours, which then stands for 0 to 24 hours after the dropping is completed. Thereby a white gel is obtained, wherein the volume ratio of the silicon ester and the second solution is 0.05 to 0.2. (4) The white gel obtained from the third step is repeatedly washed with the deionized water ultrasonic. Afterwards, the white floc obtained from the washing is dried, so that the silicon dioxide nano-tubes are obtained. Therefore, the method of the invention has the advantages of high yield ratio, large aspect ratio, uniform size and so on.
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Description

technical field

[0001] The invention relates to the field of preparation of nanomaterials, in particular to a method for preparing silicon dioxide nanotubes. Background technique

[0002] Since the discovery of carbon nanotubes, one-dimensional tubular nanomaterials have received extensive attention, and more and more researches have been done on them. The unique structure and properties of one-dimensional tubular nanomaterials have potential applications in many aspects such as catalyst carriers, sensors, composite materials, drug storage and sustained release. In recent years, people have prepared TiO 2 , V 2 o 5 、MoS 2 and other inorganic tubular nanomaterials. As a non-toxic, odorless and non-polluting non-metallic material, silica has excellent properties such as high thermal conductivity, low thermal expansion coefficient and good electrical insulation. It is used in composite material fillers, photoelectric solar cells, catalyst carriers and lithium batteries. El...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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