Ordered mesoporous metal oxide material with ultra-large aperture and preparation method thereof

An oxide and mesoporous technology, applied in the field of ordered mesoporous metal oxide materials and their preparation, can solve problems such as narrow pore size distribution

Inactive Publication Date: 2011-09-07
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high specific surface area of ​​ordered mesoporous structure materials, the pore arrangement is relatively uniform and the pore size distribution range is narrow.

Method used

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  • Ordered mesoporous metal oxide material with ultra-large aperture and preparation method thereof
  • Ordered mesoporous metal oxide material with ultra-large aperture and preparation method thereof
  • Ordered mesoporous metal oxide material with ultra-large aperture and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: (synthesis of mesoporous titania material with ultra-large pore size)

[0021] 0.10 g PEO- b -PS was dissolved into 5.0 g (61.7 mmol) THF solution and stirred to obtain a homogeneous solution A (2.0 wt %). Dissolve 0.6 g (2.1 mmol) TIPO in 0.9 g acetylacetone (AcAc) solution to obtain a light red solution B, then mix the two solutions A and B, then add 0.6 g concentrated hydrochloric acid (37 wt %), and stir for 30 min .

[0022] Transfer the obtained deep red solution to a petri dish, and after volatilizing at room temperature for 5 min, transfer the petri dish to a 40°C oven to further volatilize the solvent for 24 h, then raise the temperature of the oven to 100°C for curing for 24 h, A light yellow transparent composite film was obtained. The film was scraped off the Petri dish to give a pale yellow powder.

[0023] The newly prepared sample was placed in a tube furnace and roasted at 350-600 °C for 3 h under a nitrogen atmosphere. The heating rate wa...

Embodiment 2

[0024] Example 2: (synthesis of alumina material with ultra-large pore diameter mesoporous)

[0025] 0.10 g PEO- b -PS was dissolved into 5.0 g (61.7 mmol) THF solution to obtain a colorless homogeneous solution A (2.0 wt %). Dissolve 0.72 g (2.2 mmol) of aluminum acetylacetonate in 2.58 g of tetrahydrofuran (THF), stir evenly to obtain solution B, mix the two solutions of A and B, and drop 0.3 g of concentrated nitric acid into the system while vigorously stirring ( 67.0 wt %), after stirring for 12 h, a colorless and transparent solution was obtained.

[0026] Transfer the solution to a petri dish, volatilize at room temperature for 5 min, then transfer to a 50°C oven to evaporate the solvent for 24 h, and then heat up to 100°C to solidify for 24 h, and remove the obtained light yellow transparent composite film from the petri dish Scrape off to obtain light yellow fresh sample powder.

[0027] The newly prepared samples were placed in a tube furnace, under the protection...

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Abstract

The invention belongs to the field of advanced nano-sized porous materials and techniques, in particular relates to an ordered mesoporous metal oxide material with ultra-large aperture and a preparation method thereof. According to the invention, a block copolymer with ultrahigh-molecular-weight hydrophobic segments is used as a template agent for the mesoporous material, and based on the principle of ligand-assisted self-assembly, the microphase separation of the ultrahigh-molecular-weight hydrophobic segments from hydrophilic phases occurs during the solvent evaporation process, to form an ordered mesoscopic structure. A variety of materials are used for synthesizing the mesoporous material, such as titanium dioxide, aluminum oxide and zinc oxide. The synthesized mesoporous material retains the order of mesopores and has an extremely large aperture not less than 20 nm. The invention provides an effective and convenient method for synthesizing ultra-large aperture mesoporous materials. The material and the synthesis method of the material have wide application prospect in various fields. The method is simple, has easily-available raw materials, and is suitable for large-scale production.

Description

technical field [0001] The invention belongs to the field of advanced nanoporous materials and technology, and specifically relates to an ordered mesopore with super large pore size based on ligand-assisted self-assembly using an amphiphilic block copolymer with a super large molecular weight hydrophobic block as a structure directing agent Metal oxide materials and methods for their preparation. technical background [0002] In recent years, metal oxide materials and composite materials have received extensive attention from the scientific community for their wide applications in photoinduced electron transport, photoconduction, sensing, photocatalytic dye-sensitized solar cells, battery packs, and water purification. . (A. Hagfeldt, J. Tang, Y. Y. Wu, E. W. McFarland, G. D. Stucky, Chem.Commun . 2004, 1670 -1671; T. Kawahara, Y. Konishi, H. Tada, N. Tohge, J. Nishii, S. Ito, Angew . Chems . Int . Ed . 2002, 41, 2811-2813; P. Prene, E. Lancelle-Beltran, C. Boscher...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B13/14B82Y30/00B82Y40/00
Inventor 张俊勇邓勇辉魏晶孙镇坤屠波赵东元
Owner FUDAN UNIV
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