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Preparation method of monodisperse mesoporous silica nano-sheet material

A mesoporous silica and nanosheet technology, applied in the direction of silica, silicon oxide, nanotechnology, etc., can solve the problems of small pore size, length of template agent chain, etc., and achieve the effect of high repetition rate and simple operation

Inactive Publication Date: 2019-02-22
深圳元颉新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention proposes a method for preparing a monodisperse mesoporous silica nanosheet material, which solves the problem in the prior art that the chain length of the template agent is short and the pore size is relatively small

Method used

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  • Preparation method of monodisperse mesoporous silica nano-sheet material

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Embodiment 1

[0036] A method for preparing a monodisperse mesoporous silica nanosheet material, comprising:

[0037] (1) Dissolve 5.0g of cetyltrimethylammonium chloride and 0.12mL of diethanolamine in 20mL of deionized water successively, stir at high speed to form a colorless and transparent solution; put the colorless and transparent solution into the reactor and stirring (speed is 1000 rev / min), the time is 0.5h;

[0038] Add 20mL cyclohexane to the above solution to obtain an oil-water miscible system;

[0039] Add 0.4mL tetraethyl orthosilicate to the above oil-water miscible system to form a new oil-water miscible system;

[0040] (2) React the oil-water miscible system in step (1) in an oil bath at a temperature of 20°C for 10 hours; after the reaction, collect the precipitate by centrifugation, wash with water and ethanol three times respectively, and obtain monodisperse mesoporous silica nanosheets ;

[0041] (3) Place the above-mentioned monodisperse mesoporous silica nanoshe...

Embodiment 2

[0046] (1) Dissolve 8.0g of cetyltrimethylammonium chloride and 0.5mL of triethanolamine in 20mL of deionized water successively, stir at high speed to form a colorless and transparent solution; put the colorless and transparent solution into the reactor and stirring (speed is 1800 rev / min), the time is 0.5h;

[0047] Add 15mL of decahydronaphthalene to the above solution to obtain an oil-water miscible system;

[0048] Add 5mL of sodium silicate to the above oil-water miscible system to form a new oil-water miscible system;

[0049] (2) React the oil-water miscible system in step (1) in an oil bath at a temperature of 10°C for 18 hours; after the reaction, collect the precipitate by centrifugation, wash with water and ethanol three times respectively, and obtain monodisperse mesoporous silica nanosheets ;

[0050] (3) Place the above-mentioned monodisperse mesoporous silica nanosheets in a muffle furnace, raise the temperature from room temperature to 1000°C at 0.25°C / min i...

Embodiment 3

[0055] (1) Dissolve 3g of octadecyltrimethylammonium chloride and 0.75mL of ammonia successively into 20mL of deionized water, stir at a high speed to form a colorless and transparent solution; put the colorless and transparent solution into the reactor and Stir (speed is 1500 rev / min), the time is 1.5h;

[0056] Add 10 mL of octadecene to the above solution to obtain an oil-water miscible system;

[0057] Add 2.5mL tetraethyl orthosilicate to the above oil-water miscible system to form a new oil-water miscible system;

[0058] (2) React the oil-water miscible system in step (1) in an oil bath at a temperature of 45°C for 10 hours; after the reaction, collect the precipitate by centrifugation, wash with water and ethanol three times respectively, and obtain monodisperse mesoporous silica nanosheets ;

[0059] (3) Place the above-mentioned monodisperse mesoporous silica nanosheets in a muffle furnace, raise the temperature from room temperature to 370°C at 2.5°C / min in an air...

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Abstract

The invention discloses a preparation method of a monodisperse mesoporous silica nano-sheet material. The preparation method comprises the following steps: (1) dissolving a surfactant and a catalyst into water, adding an organic solvent, and adding a silicon source to form a new mixed phase system; (2) reacting the new mixed phase system at a temperature of 10-60 DEG C to obtain a monodisperse mesoporous silica nano-sheet; and (3) removing the surfactant from the monodisperse mesoporous silica nano-sheet.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation, in particular to a method for preparing a monodisperse mesoporous silica nanosheet material. Background technique [0002] Mesoporous silica nanosheets are an important porous material with the characteristics of thin thickness, high porosity, large specific surface area, stable chemical properties, low cost, good hydrophilicity, and non-toxicity. Therefore, they are widely used in adsorption, catalysis, etc. It has been widely used in the field of biomedicine, especially in the field of biomedicine, and its rich mesoporous structure and sheet morphology are very suitable for its application in biological drug loading. Therefore, research on mesoporous silica nanosheets has received more and more attention. Pay attention to. However, the previous preparation of mesoporous silica was mainly based on a homogeneous reaction system, so its pore size was mainly determined by surfacta...

Claims

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Application Information

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IPC IPC(8): C01B33/18B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01B33/18C01P2004/04C01P2004/20C01P2006/12C01P2006/14C01P2006/17
Inventor 赵东元朱洪伟刘玉普
Owner 深圳元颉新材料科技有限公司
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