Hollow silicon dioxide nanometer sphere and preparation method and application thereof

A technology of hollow silica and silica, applied in the direction of silica, silica, chemical instruments and methods, etc., can solve the problems of cumbersome process and high cost of hard template preparation, achieve simple and efficient operation, and increase loading capacity , The effect of not harsh process conditions

Active Publication Date: 2019-05-24
HUAZHONG UNIV OF SCI & TECH
View PDF13 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the preparation process of this type of hollow sphere is usually cumbersome, an

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hollow silicon dioxide nanometer sphere and preparation method and application thereof
  • Hollow silicon dioxide nanometer sphere and preparation method and application thereof
  • Hollow silicon dioxide nanometer sphere and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0042] Preparation of the carbon sphere template in the example of the present invention: prepare 40mL of glucose solution with a concentration of 0.4M, stir magnetically for 0.5h until the glucose is fully dissolved, transfer to a stainless steel hydrothermal reaction kettle and react at 180°C for 6h. The reacted product was suction filtered, washed three times with deionized water and absolute ethanol, and dried in an oven at 50°C for future use. The prepared carbon sphere template is about 800 nm in size, uniform in size and good in dispersibility.

[0043] figure 1 It is the scanning electron microscope image of the prepared carbon sphere template agent, it can be seen that the size of the carbon sphere template agent is 800nm, the size is uniform, and the dispersion is good.

Embodiment 1

[0045] The preparation method of macroporous and mesoporous "raspberry-like" hollow silica nanospheres is as follows: put 0.05g of the above-mentioned carbon sphere template into a 100ml beaker, add 40mL of absolute ethanol and 10mL of deionized water respectively, and then ultrasonically 2h, so that the carbon spheres are fully dispersed. Add 0.08g CTAB (cetyltrimethylammonium bromide) to the dispersion of carbon spheres, stir for 10min to fully dissolve CTAB, then add 0.75mL of ammonia water, stir for 0.5h to fully mix the whole system. Then add 0.2mL TESO (tetraethyl orthosilicate), and continue to stir for 3h, so that the silicon source can be attached and hydrolyzed on the carbon sphere template. After fully hydrolyzed, the reactant was transferred to a stainless steel hydrothermal reaction kettle, and hydrothermally reacted at 180° C. for 4 h. Afterwards, the hydrothermal reaction product was suction-filtered, washed three times with deionized water and absolute ethanol...

Embodiment 2

[0050] Preparation of macroporous and mesoporous "raspberry-like" hollow silica nanospheres: put 0.05g of the above-mentioned carbon sphere template into a 100ml beaker, add 40mL of absolute ethanol and 10mL of deionized water, and then sonicate for 2h. Make the carbon spheres fully dispersed. Add 0.08g CTAB (cetyltrimethylammonium bromide) to the dispersion of carbon spheres, stir for 10min to fully dissolve CTAB, then add 0.25mL of ammonia water, stir for 0.5h to fully mix the whole system. Then add 0.2mL TESO (tetraethyl orthosilicate), and continue to stir for 3h, so that the silicon source can be attached and hydrolyzed on the carbon sphere template. After fully hydrolyzed, the reactant was transferred to a stainless steel hydrothermal reaction kettle, and hydrothermally reacted at 180° C. for 4 h. Afterwards, the hydrothermal reaction product was suction-filtered, washed three times with deionized water and absolute ethanol, and then dried in an oven at 50°C. Finally, ...

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
Login to view more

PUM

PropertyMeasurementUnit
Mesopore diameteraaaaaaaaaa
Login to view more

Abstract

The invention provides a hollow silicon dioxide nanometer sphere and a preparation method and application thereof. The preparation method of the hollow silicon dioxide nanometer sphere comprises the following steps that 1, a silicon source precursor is added into a solution containing a carbon sphere template agent, a catalyst, a dispersing agent and a surface active agent for a stirring reactionfor 3-4 h; the dispersing agent is ethyl alcohol and water; 2, the solution obtained in step 1 is subjected to a hydrothermal reaction under the temperature of 150-200 DEG C. The preparation method can obtain the hollow silicon dioxide nanometer sphere containing communicated macropore and mesopore structures, and the hollow silicon dioxide nanometer sphere is of the grading hole structure and isin a raspberry shape. The preparation method is easy and efficient to implement.

Description

technical field [0001] The present invention relates to the field of preparation of inorganic materials, more specifically, to a hollow silica nanosphere and its preparation method and application. Background technique [0002] Submicron-sized materials with fine structures have attracted much attention in recent years. Hollow silica microspheres have the advantages of good stability, high specific surface area, and good biological safety. Not only that, their unique internal cavity structure can also load a variety of functional particles and guest molecules, and are widely used in catalysis, adsorption, etc. and biomedicine. At present, the preparation of hollow silica mainly includes hard template method and soft template method. Among them, soft templates are usually surfactant clusters and polymer assemblies, etc., and their preparation and removal are relatively simple. However, the porous silica microspheres usually used as soft templates, especially those dependen...

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
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C01B33/18B01J21/08B01J35/08H01M4/48H01M10/052A61K47/04B82Y40/00
CPCY02E60/10
Inventor 罗志强万影任小宁余晓凤程思万江陵
Owner HUAZHONG UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap