Mesoporous silica nano hollow sphere and preparation method thereof

A technology of mesoporous silica and hollow spheres, applied in the directions of silica, silica, nanotechnology, etc., to achieve the effect of helping mass production, simple operation, and stable skeleton structure

Inactive Publication Date: 2015-03-25
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practical applications, only relying on the skeleton of molecular sieve silica is far from meeting the actual needs. Therefore, it is necessary to treat the shell, surface and pores of molecular sieves and hollow mesoporous silica spheres.

Method used

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  • Mesoporous silica nano hollow sphere and preparation method thereof
  • Mesoporous silica nano hollow sphere and preparation method thereof
  • Mesoporous silica nano hollow sphere and preparation method thereof

Examples

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Embodiment 1

[0035] A kind of mesoporous silica nano hollow sphere, such as Figure 5 As shown in c, it includes a spherical shell 1. A cavity 2 is formed in the spherical shell 1. The spherical shell 1 is formed by gathering mesoporous silica nanoparticles with a particle size of 5-50 nm. The inside and outside of the spherical shell The surface contains amino groups.

[0036] The preparation method of the described mesoporous silica nano hollow spheres is as follows:

[0037] (1) Weigh 1g of cetyltrimethylammonium bromide and add it to 29mL of deionized water, stir at room temperature until it dissolves, then add 1mL of ammonia water with a weight concentration of 26% dropwise to make the whole system alkaline, pH is 7.5;

[0038] (2) Add 13mL of absolute ethanol to the basic cetyltrimethylammonium bromide solution in step (1) to obtain a mixed solution;

[0039] (3) Weigh 10g of styrene, 1.5g of polyvinylpyrrolidone and 0.26g of azobisisobutylamidine hydrochloride into 100mL of deion...

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Abstract

The invention provides a mesoporous silica nano hollow sphere and a preparation method thereof. The mesoporous silica nano hollow sphere is characterized by comprising a spherical shell in which a cavity is formed; the spherical shell is formed by aggregating mesoporous silica nano particles with the grain size being 5-50nm, and amino is contained on the inner and outer surfaces of the spherical shell. The novel mesoporous silica nano hollow sphere prepared in the invention is rich in amino on the surface and has the characteristics of being great in specific surface area, good in biocompatibility, high in stability, great in drug loading capacity and the like.

Description

technical field [0001] The invention discloses a novel mesoporous silica nanometer hollow sphere and a preparation method thereof. The mesoporous silica nano hollow spheres can be used as catalysts, carriers and chemical separation materials in the field of chemical engineering; in the fields of biology and medicine, they can be used for the immobilization, separation and purification of enzymes or proteins, the separation of cells and nucleic acids, and the sustained release of drugs etc.; in the field of environmental protection as gas adsorbents and water purifiers; in the field of functional materials as energy storage materials, nano-reactors, composite luminescent sensing materials and nano-materials of nano-semiconductor cluster particles. Background technique [0002] In 1992, scientists Kresge and Leonowicz of Mobil Corporation of the United States reported for the first time an ordered mesoporous material based on silicate in the journal Nature, which aroused wides...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/12B82Y30/00B82Y40/00
Inventor 何创龙秦明冯炜尹郅祺仇可新
Owner DONGHUA UNIV
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