Method for synthesizing organic-inorganic composite silicon oxide nano-line

A composite silicon oxide and synthesis method technology, applied in the direction of silicon oxide, silicon dioxide, etc., can solve the problems of product purity decline, cumbersome reaction steps, incomplete reaction, etc., and achieve the effect of simple steps, large output, and high insulation

Inactive Publication Date: 2008-05-28
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the previous hydrothermal synthesis method, the catalytic metal needs to be calcined to be loaded, which not only leads to cumbersome reaction steps and increased energy consumption, but also causes sintering and agglomeration of nano-scale silicon sources due to calcining.
The reaction is not complete during the mass preparation process, resulting in a decrease in product purity and low yield

Method used

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  • Method for synthesizing organic-inorganic composite silicon oxide nano-line
  • Method for synthesizing organic-inorganic composite silicon oxide nano-line
  • Method for synthesizing organic-inorganic composite silicon oxide nano-line

Examples

Experimental program
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Effect test

example 1

[0042] With 3.75g silica sol (silicon oxide content is 40%) A 1 Disperse in 25ml of 0.5mol / l ferric chloride solution and oscillate. After the system is evenly mixed, add 40ml of ethylenediamine solution, oscillate, and sonicate for 15 minutes. Transfer the well-mixed mixture into a reaction kettle with a polytetrafluoroethylene liner, tighten the reaction kettle and place it in an oven at 200°C for 5 days of reaction; take out the reacted green solid with water and ethanol respectively After washing 5 times, a silicon oxide nanowire A with an organic-inorganic composite structure will be obtained 2 . The silicon oxide nanowires with an organic-inorganic composite structure were stirred with 1 mol / l hydrochloric acid solution for 1 hour at a temperature of 80°C; finally, the solids treated with hydrochloric acid were washed with water three times, and dried at room temperature to obtain a white powder Solid pure inorganic silica nanowires A 3 .

example 2

[0044] Experiment with the same method as example 1, but with 3.75g silica sol A 1 Replaced with 1.50g white carbon black B 1 , the product B can be obtained 2 (before pickling) B 3 (after pickling).

example 3

[0046] Experiment with the same method as example 1, but with 3.75g silica sol A 1 Replaced with 1.50g HMS silica pellets C 1 Available product C 2 (before pickling) C 3 (after pickling).

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Abstract

The invention pertains to polymeric material field, which mainly relates to a method for synthesis of organic and inorganic composite silica nano line. The method adopts amorphous silica as silicon source, and under the condition that Fe exists, the organic and inorganic composite silica nano line is obtained by one-step liquid-gas phase reaction of organic amine solution. The synthesis method is simple with low cost. The produced organic-inorganic composite silica nano line has the advantages of good fluorescence activity, large specific surface area, good insulation performance and rich surface silanol groups, thus having high application potential in the fields such as assembly of micronano device, study of nano array and nano optical transmission and nano high insulation resistance; at the same time, as a novel nano material, the organic-inorganic composite silica nano line also has broad developing prospect in the fields such as traditional industrial catalyst, polymer material reinforcement, cosmetic whitening and ultraviolet ray prevention, etc.

Description

technical field [0001] The present invention utilizes the condition of liquid-solid phase hydrothermal reaction to prepare amorphous silicon oxide into silicon oxide nanowires with organic-inorganic composite structure in aqueous solution of ethylenediamine; the silicon oxide with organic-inorganic composite structure The nanowires will be transformed into pure inorganic silicon oxide nanoparticles after pickling or firing. Background technique [0002] Nanoscience has advanced rapidly since the first discovery of carbon nanotubes in the 1990s. In the preparation of nanomaterials, according to the morphology of nanomaterials, they can be divided into: zero-dimensional nanomaterials such as nanoparticles, one-dimensional nanomaterials such as nanowires, nanotubes, nanorods, and nanohelices, and two-dimensional nanomaterials such as nanosheets and nanomaterials. tapes, three-dimensional nanoarrays, and more. Due to the microscopic quantum effects, various nanomaterials with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/18
Inventor 米刚陈平唐颐张亚红
Owner FUDAN UNIV
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