Preparation method of monodisperse porous silica sphere material

A porous silica, monodisperse technology, applied in the direction of silica, silicon oxide, nanotechnology for materials and surface science, etc., can solve the problems of small pore size and small adjustable range of pore size, and achieve high repetition rate , the effect of simple operation

Pending Publication Date: 2019-12-31
元颉新材料科技(浙江)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention proposes a preparation method of a monodisperse porous silica sphere material, which solves the problems that the porous silica sphere material in the prior art has a small pore diameter and a small adjustable range of pore diameter

Method used

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  • Preparation method of monodisperse porous silica sphere material
  • Preparation method of monodisperse porous silica sphere material

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Experimental program
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Embodiment 1

[0034] A preparation method of a monodisperse porous silica sphere material, comprising:

[0035] (1) Dissolve 2.0g of cetyltrimethylammonium chloride and 0.08mL 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 Medium; the stirring speed of the above-mentioned high-speed stirring can be selected from 150-800 rpm, and the time can be controlled at 0.25-5h; the stirrer used can be a turbine stirrer, a paddle stirrer, a magnetic stirrer, a magnetic Heated, hinged-blade, or mechanical stirrers;

[0036] Dissolve ethyl orthosilicate in cyclohexane to obtain 8mL organic solution; wherein the concentration of ethyl orthosilicate is 10wt%; add the organic solution to the clear solution to form an oil-water miscible system;

[0037] (2) React the oil-water miscible system in step (1) in an oil bath at a temperature of 60° C. for 8 hours; after the rea...

Embodiment 2

[0041] (1) Dissolve 0.2g of cetyltrimethylammonium bromide and 0.08mL of octylamine 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 Medium; the stirring speed of the above-mentioned high-speed stirring can be selected from 150-800 rpm, and the time can be controlled at 0.25-5h; the stirrer used can be a turbine stirrer, a paddle stirrer, a magnetic stirrer, a magnetic Heated, hinged-blade, or mechanical stirrers;

[0042] Dissolve ethyl orthosilicate in dioxane to obtain 10 mL of organic solution; wherein the concentration of ethyl orthosilicate is 3 wt %; add the organic solution to the clear solution to form an oil-water miscible system;

[0043] (2) React the oil-water miscible system in step (1) in an oil bath at a temperature of 40° C. for 24 hours; after the reaction, collect the precipitate by centrifugation, wash with water and ethanol three times respe...

Embodiment 3

[0047] (1) Dissolve 4.4g of octadecyltrimethylammonium bromide and 0.15mL of dodecylamine 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 reaction In the device; the stirring speed of the above-mentioned high-speed stirring can be selected from 150-800 rpm, and the time can be controlled at 0.25-5h; the stirrer used can be a turbine stirrer, a paddle stirrer, a magnetic stirrer, Magnetic heating stirrer, hinged leaf stirrer, or mechanical stirrer;

[0048] Dissolving fumed silica in octadecene to obtain 10 mL of an organic solution; wherein the concentration of fumed silica is 50 wt %; adding the organic solution to the clarified solution to form an oil-water miscible system;

[0049] (2) reacting the oil-water miscible system in step (1) in an oil bath at a temperature of 80° C. for 2 hours; after the reaction, the precipitate was collected by centrifugation, washed w...

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Abstract

The invention proposes a preparation method of a monodisperse porous silica sphere material. The preparation method comprises the steps: (1) dissolving a surfactant and a catalyst in water, performingstirring at high speed until clearness of a solution, dissolving a silicon source in an organic solvent so as to obtain an organic solution, and adding the organic solution to the clear solution so as to form an oil-water mixed-phase system; (2) performing a reaction on the oil-water mixed-phase system at a temperature of 40-80 DEG C so as to obtain monodispersed nanospheres; and (3) removing thesurfactant in the monodispersed nanospheres so as to obtain the monodisperse porous silica sphere material. The oil-water two-phase miscible reaction system is adopted, the highest pore diameter of the obtained inorganic silica spheres can reach 70 nm due to the pore-expanding effect of an organic phase, and meanwhile, the pore diameter of the inorganic silica spheres can be regulated, so that the pore diameter of the inorganic silica spheres is regulated freely within a range of 15-70 nm.

Description

[0001] This application is a divisional application of application number 2018102807865, the name is the preparation method of monodisperse porous silica ball material, and the application date is April 02, 2018. technical field [0002] The invention relates to the technical field of nanomaterial preparation, in particular to a method for preparing a monodisperse porous silica sphere material. Background technique [0003] Porous silica spheres have the characteristics of high porosity, large specific surface area, stable chemical properties, low cost, good hydrophilicity, and non-toxicity. Therefore, they are widely used in the fields of adsorption, catalysis, filtration, and biomedicine. Due to the pore structure is the key to its application, so more and more attention has been paid to the research on regulating the pore size of porous silica. At present, there are many studies on the preparation of larger pore size silica materials, but most of them focus on the preparat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/18B82Y30/00B82Y40/00
CPCC01B33/18C01P2004/03C01P2004/04C01P2004/32C01P2004/64C01P2004/62C01P2006/14C01P2006/16C01P2006/12
Inventor 赵东元朱洪伟刘玉普
Owner 元颉新材料科技(浙江)有限公司
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