Spherical silicon dioxide hollow material and preparation method thereof

A spherical silica and hollow technology, which is applied in the manufacture of silica, silicon oxide, and nanostructures, can solve the problems of long reaction time and achieve the effects of simple operation, easy-to-obtain non-toxic raw materials, and mild conditions
CN101792149AInactive Publication Date: 2010-08-04NANKAI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NANKAI UNIV
Publication Date
2010-08-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a spherical silicon dioxide hollow material and a preparation method thereof. The spherical silicon dioxide hollow material is prepared from cholic acid and silicon source serving as raw materials in a molar ratio of 1: 2-6. The preparation method comprises the following steps: dissolving the cholic acid into aqueous solution of ammonia to form alkali aqueous solution of cholic acid ammonium salt, reacting the alkali aqueous solution with the silicon source with stirring, standing and ageing the solution, filtering a reaction product, and flushing and drying the product. The silicon source is a mixture of 3-aminopropyltriethoxysilane and ethyl orthosilicate in a ratio of 1: 1-5. The grain diameter of the spherical silicon dioxide hollow material is 100 to 1,000 nanometers, and the wall thickness is 50 nanometers. A micro-molecular biological surfactant is used as a template, an organic solvent is not used in the reaction, a template agent does not need to be further removed, the raw materials are easily obtained and are nontoxic, the operation is simple and convenient, and the conditions are mild. The silicon dioxide hollow material prepared by the method is particularly applicable in biomedicine related fields of medicament delivery, active guest molecule protection and the like.
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Description

technical field

[0001] The invention belongs to the field of inorganic nanomaterials, and in particular relates to a spherical silica hollow material and a preparation method thereof, specifically a spherical silica micro-nano hollow material based on a biosurfactant cholate as a template and a preparation method thereof. Background technique

[0002] Micro / nano hollow spheres with regular structure have attracted more and more attention due to their potential wide application in many fields such as catalysis, chromatography, protection of biologically active reagents, fillers (pigments, coatings), pollutant treatment, and release systems for large biomolecules. growing interest. Silica hollow materials have many excellent properties, such as low density, low toxicity, good mechanical and thermal stability, high biocompatibility, etc., and can be widely used in fillers, coatings, catalyst carriers, drug delivery and biochemical reagent protection, etc. field, which has arou...

Claims

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