Mesoporous silica nanoribbon material and production method thereof

A technology of mesoporous silica and nanobelts, applied in the direction of silica, silica, nanotechnology, etc., to achieve the effects of mild conditions, controllable morphology, and simple synthesis methods

Active Publication Date: 2019-06-11
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as far as we know, the current research focuses on the use of chiral surfactants to prepare chiral mesoporous silica nanobelts, while conventional cationic / anionic surfactants are used as co-templates to prepare mesoporous silica Nanoribbons have rarely been reported

Method used

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  • Mesoporous silica nanoribbon material and production method thereof
  • Mesoporous silica nanoribbon material and production method thereof
  • Mesoporous silica nanoribbon material and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] a. Dissolve 0.1 g of cetyltrimethylammonium bromide (CTAB) in 137 mL of deionized water until the solution is clear, then add 1.32 mL of ethyl acetate (EA) and continue to stir evenly;

[0022] b. Add 0.08 g of sodium dodecyl sulfate (SDS) to the above solution, with a molar ratio of 1 to CTAB, and stir well, then add 2.7 mL of ammonia (25-28 wt.%) and continue to stir evenly;

[0023] c. Finally, add 275 µL of tetraethylorthosilicate (TEOS) as the silicon source and continue the reaction for 20 hours. After the reaction is completed, the reactants are centrifuged, washed with deionized water and dried repeatedly, and the white powder obtained is It is a mesoporous silica nanobelt.

[0024] The physical properties of the obtained product were characterized, and some of the results are shown in the attached drawings. The obtained mesoporous silica product has a length between 1 µm and 1.5 µm, a width of about 45 nm, and a ribbon-like structure with curled edges. At the same t...

Embodiment 2

[0026] The preparation process and steps of this embodiment are basically the same as those of embodiment 1, except for step b:

[0027] The amount of sodium dodecyl sulfate (SDS) is 0.04 g.

[0028] The results obtained are significantly different from those of Example 1 in terms of morphology and structure. The product obtained partially presents a closed ring structure, which is mainly composed of nanorods with a length of about 400 nm and a diameter of about 43 nm, and has good properties. The channel characteristics.

Embodiment 3

[0030] The preparation process and steps of this embodiment are basically the same as those of embodiment 1, except for step a:

[0031] The amount of ethyl acetate (EA) is 0.5 mL.

[0032] The results obtained are significantly different from those of Example 1. The obtained product has a layered structure with slight curls on the edges, but is relatively thick and has poor dispersion.

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Abstract

The invention relates to a mesoporous silica nanoribbon material and a production method thereof. A mesoporous silica nanoribbon has relatively-ordered mesoporous channels, the length is 1-1.5 mum, and the width is 45-50 nm. From an SEM picture, the fact that the obtained mesoporous silica nano material is of a unique curly structure can be seen. A TEM result shows that light and shade of edges and the interior of the material are clear, which proves that the edges of the material crimp, and obvious mesoporous channel structures can be observed. The produced ribbon-shaped mesoporous silica nano material has wide application prospects in the fields of environmental catalysis and adsorption, biomedicine and the like due to the fact that the ribbon-shaped mesoporous silica nano material has the unique structure with both inner and outer surfaces capable of being subjected to functional modification.

Description

Technical field [0001] The invention relates to a mesoporous silicon oxide nanobelt material and a preparation method thereof. Background technique [0002] Mesoporous silica nanomaterials have outstanding advantages due to their high specific area, adjustable pore diameter and diversified morphology and structure. Since MCM-41 was first reported by Mobil Corporation in 1992, it has been popular among the materials industry and chemists. Widely concerned about its morphology control, structure control and growth mechanism exploration. The reason why mesoporous silica nanomaterials exhibit many excellent physical and chemical properties is not only related to the unique mesoporous channels of the material, but also related to the macroscopic and microscopic morphology of the material itself. In recent years, scientists have paid more and more attention to the rich appearance and morphology of mesoporous silica while working to control the internal pore structure of mesoporous sil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/18B82Y30/00B82Y40/00
Inventor 张海娇宋亭亭
Owner SHANGHAI UNIV
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