Earth silicon vesicle material with controllable shape, dimension and thickness of wall and method for preparing same

A technology of silica and vesicles, applied in the field of porous materials, to achieve the effects of simple operation, rich structure, great possibility and selectivity

Inactive Publication Date: 2008-10-22
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, no method has been used to achieve effective synthetic control of the shape, size and wall thickness of silica inorganic vesicle materials.

Method used

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  • Earth silicon vesicle material with controllable shape, dimension and thickness of wall and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Add 0.2g B50-6600 and 0.3g P65 mixed surfactant into 30g pH=4.7NaAC-HAc[c(HAc)=c(NaAc)=0.4M] buffer solution, stir at 25°C to make the surfactant Dissolve completely, add 0.008mol TEOS and 0.002mol TMOS mixed silicon source to the system, continue to stir for 40 minutes, let stand for 24 hours, heat at 100°C for 24 hours, suction filter, wash, dry, and bake at 550°C for 5 hours. get figure 1 (a) Shaped vesicle material.

Embodiment 2

[0032] Add 0.5g B50-6600 into 30g pH=4.7NaAC-HAc[c(HAc)=c(NaAc)=0.4M] buffer solution, stir at 25°C to completely dissolve the surfactant, add 2.08 g TEOS, continue to stir for 20 minutes, let stand for 24 hours, heat at 100°C for 24 hours, filter with suction, wash, dry, and bake at 550°C for 5 hours. get figure 1 (b) Shaped vesicle material.

Embodiment 3

[0034] Add 0.5g B50-6600 mixed surfactant into 30g pH=4.7NaAC-HAc[c(HAc)=c(NaAc)=0.4M] buffer solution, stir at 25°C to completely dissolve the surfactant, and add Add 0.01mol TEOS and 0.004mol TMOS mixed silicon source into the system, continue to stir for 40 minutes, let stand for 24 hours, heat at 100°C for 24 hours, suction filter, wash, dry, and bake at 550°C for 5 hours. get figure 1 (c) Vesicle-like material.

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Abstract

The invention pertains to the technical field of porous material, in particular to a dioxide vesicle material with a controllable shape, a controllable size and a controllable wall thickness and a preparation method thereof. The invention adopts a sol-gel method to synthetize novel silicon dioxide vesicle material with the controllable shape, an adjustable aperture and an alterable wall thickness in a near-neutral aqueous solution system. The preparation method comprises the steps such as collaborative self-assembly, hydrothermal treatment, drying, roasting to remove a template agent, etc. of the sol-gel process of vesicle with various patterns. The reaction conditions of the invention are mild, the operation is simple and easy and the material structure is rich and controllable. The shape, the size, the wall thickness, etc. of the material can be effectively adjusted and controlled by changing the conditions of the ratio of silicon sources and a surface active agent and the mol ratio of different silicon sources and by adjusting the mass ratio of composing different polymers, etc. The vesicle material has wide applicable prospect in the fields of adsorption, catalyst carriers, slow release of drug, separation, chromatogram, paints, micro reactors, etc.

Description

technical field [0001] The invention belongs to the technical field of porous materials, and in particular relates to a silicon dioxide vesicle material with controllable shape, size and wall thickness and a synthesis method thereof. Background technique [0002] Vesicle materials have broad application prospects in catalysis, chromatography, microreactors, pigments, fillers for low dielectric materials, separation, drug sustained release, etc., and thus have attracted extensive attention from researchers. Considering their chemical composition, vesicle materials can be roughly divided into two categories: organic and inorganic. Vesicle materials can be prepared using ionic surfactants. In addition, Eisenberg [Kui Yu, Adi Eisenberg*, Macromolecules, 1996, 29, 6359-6361; Tony, Azzam.; AdiEisenberg*, Angewandte Chemie-International Edition 2006, 45, (44), 7443-7447] and their collaborators used block copolymers, by changing the composition of block copolymers, the concentrati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/18B82B1/00B82B3/00
Inventor 余承忠余美花王韵华
Owner FUDAN UNIV
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