Preparation method of organic-inorganic hybrid transparent mesoporous gel monolith

An inorganic and organic technology, applied in the field of mesoporous molecular sieve functional materials, can solve the problems of single skeleton composition of transparent mesoporous silica gel monolith, difficult optical device application, opacity, etc., to expand the applicable range, improve the Mechanical properties, uniform distribution effect

Inactive Publication Date: 2013-06-12
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention discloses a method for preparing organic-inorganic hybrid transparent mesoporous gel monolith, which aims to improve the relatively single skeleton composition of the existing transparent mesoporous silica gel monolith, so as to realize the optimization of gel pore micro-regions. The adjustment of environmental polarity in a wider range expands the range of materials that can be used, and at the same time solves the problem that the existing organic-inorganic hybrid materials are opaque and difficult to apply in the field of optical device development, thus providing a large-scale The technical scheme of the preparation method of organic-inorganic hybrid mesoporous gel monolith with large size, no cracks and optical transparency, the organic functional group ethylene in the material prepared by this method is uniformly distributed in high concentration in the pore wall of the mesoporous gel , providing a new micro-regional environment for the regulation of the dispersion, migration and aggregation of different guest molecules inside the pores, and improving the mechanical and hydrothermal stability of the gel material, providing a new class of new optical devices for the development of base material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0018] Stir and mix 0.5 g of P123, 0.135 ml of 0.05M hydrochloric acid, 1 ml of propanol and 0.925 ml of 1,2-bis(triethoxysilyl)ethane in sequence at room temperature, and continue to stir for 30 minutes after the system is completely homogeneous. The prepared homogeneous sol was moved into a container with a certain shape, sealed, and then left to stand at a constant temperature at 60°C for 1 hour, and then the container was left open at 60°C for 3.86 hours to gel the system. Then seal the container again and leave it to age at a constant temperature of 60°C for 1 day, and finally dry it directly at 60°C, and obtain a container-shaped product after 48 hours.

Embodiment approach 2

[0020] Stir and mix 0.5 g of F127, 0.135 ml of 0.05M hydrochloric acid, 1 ml of propanol and 0.925 ml of 1,2-bis(triethoxysilyl)ethane at room temperature in sequence, and continue stirring for 30 minutes after the system is completely homogeneous. The prepared homogeneous sol was moved into a container with a certain shape, sealed, and then left to stand at a constant temperature at 60°C for 1 hour, and then the container was left open at 60°C for 3.05 hours to gel the system. Then seal the container again and leave it to age at a constant temperature of 60°C for 1 day, and finally dry it directly at 60°C, and obtain a container-shaped product after 48 hours.

Embodiment approach 3

[0022] Mix 0.5 g of Brij56, 0.135 ml of 0.05M hydrochloric acid, 1 ml of propanol and 0.925 ml of 1,2-bis(triethoxysilyl)ethane at room temperature and stir for 30 minutes after the system is completely homogeneous. The prepared homogeneous sol was moved into a container with a certain shape, sealed, and then left to stand at a constant temperature at 60°C for 1 hour, and then left to stand at 60°C for 1.75 hours to make the system gel. Then seal the container again and leave it to age at a constant temperature of 60°C for 1 day, and finally dry it directly at 60°C, and obtain a container-shaped product after 48 hours.

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Abstract

The invention discloses a preparation method of organic-inorganic hybrid transparent mesoporous gel monolith, belongs to the technical field of mesoporous molecular sieve functional materials, and particularly relates to a preparation method of organic-inorganic hybrid transparent mesoporous gel monolith which is large in size, crack-free and optically transparent and provided with pore walls modified by ethylidene. The preparation method is characterized by comprising the following steps of: by using 1,2-bis(triethoxysilane) ethane as a single silicon source, rapidly synthesising the organic-inorganic hybrid transparent mesoporous gel monolith provided with pore walls modified by ethylidene by controlling a component proportioning ratio and the conditions of system gelation in an acidic medium taking a nonionic surfactant as a template. The preparation method of the material is simple, and easy to operate; the product is regular in shape, controllable in size, and good in heat stability and transparency; and modifying groups are uniformly distributed in the pore walls of the transparent mesoporous gel monolith and unable to block pore channels. The preparation method has an important application value in the field of development for novel optical devices.

Description

technical field [0001] The invention discloses a method for preparing an organic-inorganic hybrid transparent mesoporous gel monolith, which belongs to the technical field of mesoporous molecular sieve functional materials, and specifically relates to a large-sized, crack-free, optically transparent organic-inorganic hybrid mesoporous gel monolith. Preparation method of colloidal monolith. Background technique [0002] The transparent mesoporous gel monolith formed by surfactant as a template has high light transmittance, low external area, and its inherently ordered and adjustable pore structure can make dye molecules, photosensitive molecules, semiconductor particles Or conductive nanowires and other guest molecules can be intercalated at a higher concentration without mutual aggregation between molecules, so they have broad application prospects in the development of new optical devices. [0003] However, as the host material of transparent mesoporous gel monolith, its p...

Claims

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Application Information

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IPC IPC(8): C01B39/00C01B37/00
Inventor 王晓钟李祥珍韩灵翠谢克昌
Owner TAIYUAN UNIV OF TECH
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