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Method for preparing mesoporous nano particles with special appearance based on anion surfactant

A technology of surfactants and nanoparticles, applied in the direction of nanotechnology, silicon dioxide, silicon oxide, etc., can solve the problems of the influence of nanoparticle size on the properties of nanomaterials, the influence of nanoparticle size and the performance of nanomaterials on morphology, etc.

Inactive Publication Date: 2012-09-12
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing mesoporous nanoparticles with special morphology based on anionic surfactants, to solve the problem that the size and shape of nanoparticles affect the properties of nanomaterials in drug delivery. issues with high impact
At the same time, we prepared a new shape and nano-sized nanoporous particles to solve the problem that the size and shape of nanoparticles have a great influence on the properties of nanomaterials in drug delivery.

Method used

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  • Method for preparing mesoporous nano particles with special appearance based on anion surfactant
  • Method for preparing mesoporous nano particles with special appearance based on anion surfactant
  • Method for preparing mesoporous nano particles with special appearance based on anion surfactant

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Example 1: At 15°C, 1.0 mmol of Sar-Na, whose Chinese name is N-lauroyl sarcosine sodium, and whose English name is n-lauroylsarcosine sodium, is completely dissolved in 30 mL of In deionized water, add 2.0 mL of 0.1 M hydrochloric acid dropwise to slowly adjust the pH value to 6.0, stir vigorously for 30 minutes, add dropwise 1.0 mL of TEOS, and 0.1 mL of APMS. The name of TEOS is ethyl tetrasilicate, The name of the APMS is 3-aminopropyltrimethoxysilane; the resulting mixture was stirred at room temperature for 10 minutes, put in a kettle, left to age at 15°C for 2h, and then transferred the reaction kettle to an oven at 80°C for crystallization 20h. Shaking is prohibited during standing and transferring. The ratio of reaction is molar ratio namely: Sar-Na: HCl: TEOS: APMS: H 2 O;1:0.2:4.5:0.5:1667. After the crystallization, the reaction kettle was naturally cooled to room temperature, opened, and the white product was centrifuged at 8000 r / min, and washed repeate...

Embodiment 2

[0027] Example 2: At 14°C, 1.0 mmol of Sar-Na (N-lauroyl sarcosine sodium (n-lauroylsarcosine sodium, Sar-Na)) was completely dissolved in 30 mL of deionized water, and 2.0 mL of Slowly adjust the pH to 6.2 with 0.1M hydrochloric acid, stir vigorously for 30 minutes, add dropwise 1.0mL of TEOS (tetraethylorthosilicate) and 0.1mL of APMS (3-aminopropyltrimethoxysilane), and the resulting mixture is at room temperature Stirring was continued for 10 minutes, the kettle was installed, and aged at 14° C. for 2 hours, and then the reaction kettle was transferred to an oven at 80° C. for crystallization for 20 hours. Shaking is prohibited during standing and transferring. The ratio of reaction is molar ratio namely: Sar-Na: HCl: TEOS: APMS: H 2 O;1:0.2:4.5:0.5:1667. After the crystallization, the reaction kettle was naturally cooled to room temperature, opened, and the white product was centrifuged at 8000 r / min, and washed repeatedly with acetone and ethanol. Then dry at 40°C for...

Embodiment 3

[0032] Example 3: At 15°C, 1.0 mmol of Sar-Na (N-lauroyl sarcosine sodium (n-lauroylsarcosine sodium, Sar-Na)) was completely dissolved in 30 mL of deionized water, and 2.0 mL of Slowly adjust the pH to 6.6 with 0.1M hydrochloric acid, stir vigorously for 30 minutes, add dropwise 1.0mL of TEOS (tetraethylorthosilicate) and 0.1mL of APMS (3-aminopropyltrimethoxysilane), and the resulting mixture is Stirring was continued for 10 minutes, the kettle was installed, and aged at 15° C. for 2 hours, and then the reaction kettle was transferred to an oven at 80° C. for crystallization for 20 hours. Shaking is prohibited during standing and transferring. The ratio of reaction is molar ratio namely: Sar-Na: HCl: TEOS: APMS: H 2 0;1:0.2:4.5:0.5:1667. After the crystallization, the reaction kettle was naturally cooled to room temperature, opened, and the white product was centrifuged at 8000 r / min, and washed repeatedly with acetone and ethanol. Then dry at 40°C for more than 48h. The...

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Abstract

The invention relates to a method for preparing mesoporous nano particles with special appearance based on an anion surfactant, and belongs to a method for preparing mesoporous nano particles. The method comprises the following steps of: dissolving 1.0 millimole of Sar-Na in 30 mL of deionized water at the temperature of between 14 and 18 DEG C, dripping 2.0 mL of 0.1 M hydrochloric acid, regulating the pH value to 6.0 to 6.8 slowly, stirring for 30 minutes, dripping 1.0 mL of tetraethyl orthosilicate (TEOS) and 0.1 mL of 3-aminopropyl trimethoxysilane (APMS), stirring a mixture at room temperature for 10 minutes, putting into a kettle, standing at the temperature of 15 DEG C for 2 hours, transferring the reaction kettle into a drying oven of 80 DEG C, and crystallizing for 20 hours; cooling to the room temperature, opening the kettle, centrifuging and washing; drying at the temperature of 40 DEG C for 48 hours; and performing reaction to generate two products, wherein one product is positioned on a solution and is named AMS-U, the other product is dispersed in a substratum solution and is named AMS-R, superstratum substances are mesoporous hollow spheres, and substratum products are solid spheres with mesoporous structures. The method has the advantages that two mesoporous nano particles are prepared in one step and are distributed in two layers, the superstratum substances are the mesoporous hollow spheres, the substratum substances are the solid spheres, and the hollow spheres and the solid spheres can be separated by a physical method.

Description

technical field [0001] The invention relates to a method for preparing mesoporous nanoparticles with special shape, in particular to a method for preparing mesoporous nanoparticles with special shape based on anionic surfactant. Background technique [0002] Since Mobil Petroleum Company scientists prepared MCM series silica mesoporous molecular sieves using cationic surfactants as templates in the early 1990s, people have been working on the preparation and application development of mesoporous silica nanoparticles and various mesoporous particles. Enter a new era. First of all, this type of material has a huge specific surface area (1400 m2 / g), uniform pore size distribution, and pore size can be adjusted. Secondly, metal ions and other compounds with optical, thermal and magnetic functions can also be doped into the skeleton structure or pores of the material through different methods and conditions during the preparation process, so as to obtain new functions and applic...

Claims

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Application Information

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IPC IPC(8): C01B33/18B82Y40/00
Inventor 曹希传代文彦李帅耿浩然陈敏敏李国栋
Owner CHINA UNIV OF MINING & TECH
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