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One-dimensional rod-like mesoporous material and preparation method thereof and application thereof

A mesoporous material and rod-shaped technology, applied in the field of mesoporous materials, can solve the problems of high raw material cost, poor hydrothermal stability, long one-dimensional rod-shaped mesoporous material, etc., and achieve the effect of simple process steps and low cost

Inactive Publication Date: 2009-12-16
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the high cost of raw materials in the prior art, the one-dimensional rod-shaped mesoporous material is too long, especially remove the surfactant in the rod-shaped mesoporous material by roasting, causing the pores of the rod-shaped mesoporous material to shrink and its water In view of the disadvantages of poor thermal stability, etc., a method for preparing a one-dimensional rod-shaped ordered mesoporous material with a length of 10 μm is provided by using an organic porous membrane as a carrier and dissolving the organic membrane by extracting and eluting surfactants and organic solvents.

Method used

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  • One-dimensional rod-like mesoporous material and preparation method thereof and application thereof
  • One-dimensional rod-like mesoporous material and preparation method thereof and application thereof

Examples

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Effect test

Embodiment 1

[0035] Preparation of MCM-41 One-dimensional Rod Mesoporous Material

[0036] Mix 7.68g of absolute ethanol, 11.57g of tetraethyl orthosilicate and 1ml of hydrochloric acid (2.8mmol / L), stir slowly and evenly, condense and reflux for 90min in a water bath at 60°C; then add 15g of absolute ethanol, 1.52g Cetyltrimethylammonium bromide (CTAB), 4ml of hydrochloric acid (55mmol / L) mixed solution, stirred at room temperature 25 ° C for 30 minutes, cooled to room temperature 25 ° C to obtain a precursor solution containing CTAB . Using a suction filter pump (produced by Shanghai Mosu Scientific Equipment Co., Ltd., HPD-25 type oil-free suction filter pump) and a standing suction filter device (1000ml suction filter bottle) in the laboratory, the precursor solution of 6ml (containing CTAB) was divided into three times ( 2ml each time) was filtered through a porous polycarbonate membrane (produced by Whatman Company, UK, with a membrane diameter of 47mm, a pore diameter of 200μm, and...

Embodiment 2

[0044] Preparation of SBA-15 One-Dimensional Rod Mesoporous Materials

[0045] 15g of absolute ethanol, 0.10g of hydrochloric acid (12mol / L) and 2.0g of deionized water were mixed uniformly and placed in a three-necked flask, then, under slow stirring, 1.0g of surfactant P123 was added to the mixed solution until P123 was completely dissolved, and the three-necked flask containing the mixed solution was placed in an oil bath, and at a temperature of 60°C, after slowly stirring for 1 h, 2.13 g of tetraethyl orthosilicate was gradually added dropwise, and at 60 ℃ oil bath temperature for 12h with stirring and aging, and then cooled to room temperature to obtain the precursor solution containing P123. Using a suction filter pump (produced by Shanghai Mosu Scientific Equipment Co., Ltd., HPD-25 type oil-free suction filter pump) and a standing suction filter device (1000ml suction filter bottle) in the laboratory, the precursor solution of 6ml (containing P123) was divided into th...

Embodiment 3

[0053] Put the SBA-15 type one-dimensional rod-shaped mesoporous silica material generated by six organic-inorganic composite mesoporous membranes into 5ml, 0.04mg / ml aqueous solution of horseradish peroxidase, and pass the ultraviolet-visible spectrophotometry Detect the absorbance change of the horseradish peroxidase solution soaked with the mesoporous material at 402nm (the visible maximum absorption peak of the horseradish peroxidase), and the change of the absorbance is related to that of the horseradish peroxidase in the mesoporous The adsorption of the material is directly related.

[0054] by attaching Figure 7 It can be observed that the absorbance of the horseradish peroxidase solution at 402nm (the visible maximum absorption peak of the horseradish peroxidase) is along with the SBA-15 type one-dimensional rod-shaped mesoporous silica material in the horseradish peroxidase The increase of soaking time in the solution gradually decreased, and basically reached stabi...

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Abstract

The invention discloses a one-dimensional rod-like mesoporous material and a preparation method thereof and an application thereof, and belongs to the field of mesoporous materials. The preparation method comprises four steps including precursor preparation, filtration preparation of composite mesoporous membrane, elution of surfactant in membrane and dissolving of organic porous membrane, namely, mainly using filtration method to assemble inorganic mesoporous material in the holes of polycarbonate membrane to prepare composite membrane, then using extraction and elution to remove the surfactant in the composite membrane so as to obtain organic-inorganic composite mesoporous membrane, and soaking the organic-inorganic composite mesoporous membrane in dichloromethane solution, and obtaining the one-dimensional rod-like mesoporous material after completely dissolving the organic porous membrane. The rod-like material is a one-dimensional mesoporous silicon dioxide rod with a diameter of 200nm, a length of 10 mu m and a sequential hexagonal mesoporous structure belonging to MCM-41 type with an aperture of 3nm or belonging to SBA-41 type with an aperture of 8nm. The obtained one-dimensional rod-like mesoporous material is applied in the fields of biological macromolecule and catalyst adsorption and the like.

Description

technical field [0001] The invention relates to a one-dimensional rod-shaped mesoporous material and its preparation method and application, belonging to the field of mesoporous materials. Background technique [0002] With the wide application of mesoporous materials in the fields of catalytic chemistry and petrochemical industry, the research of assembling mesoporous materials in porous alumina membranes to form one-dimensional rod-like mesoporous materials has attracted people's attention in recent years. "Self-assembly of a silica surfant nanocomposite in a porous alumina membrane" in the 2004 No. 3 issue of "Nature Materials" published in the UK discloses a method for assembling one-dimensional mesoporous silica rods in porous alumina membranes. A method for preparing a one-dimensional rod-shaped mesoporous material. The length of the one-dimensional mesoporous silica rod prepared by this method is 40 μm, and the mesoporous structure is not completely ordered. Because ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/12B01J20/30B01J20/10B01J35/02B01J32/00B01J21/08
Inventor 沈逸陈勇朱瑾瑜甘思文吴龙陈安琪
Owner SHANGHAI INST OF TECH
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