Nanocomposite material possessing two-dimensional pore passage structure and its preparation method

A nanocomposite material and pore structure technology are applied in the field of nanocomposite materials with a two-dimensional cubic p6m pore structure and their preparation, achieving the effects of economical rationality, strong operability, and avoiding the sol-gel process.

Inactive Publication Date: 2013-05-15
CHONGQING UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The excellent properties of PEO-PDMS-PEO block copolymers have obvious advantages in the synthesis of mesoporous materials, but there is no literature report on the use of PEO-PDMS-PEO block copolymers in the synthesis of mesoporous materials

Method used

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  • Nanocomposite material possessing two-dimensional pore passage structure and its preparation method
  • Nanocomposite material possessing two-dimensional pore passage structure and its preparation method
  • Nanocomposite material possessing two-dimensional pore passage structure and its preparation method

Examples

Experimental program
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Effect test

Embodiment 2

[0037] The preparation of embodiment 2As-made sample

[0038] Dissolve 2.0g of PEO-PDMS-PEO in 38.0g of THF and stir at 40°C for 10min to obtain a transparent solution. Then add 5.0 g of 20 wt % THF solution of phenolic resin prepolymer, and stir for 0.5 h to obtain a uniform solution. Transfer the solution to a petri dish, volatilize THF at room temperature for 5-8 hours, and then place the petri dish in an oven at 100°C for 24 hours to obtain a transparent orange-yellow film material. The material was scraped off the Petri dish and ground to a powder to obtain an As-made sample (the original untreated sample).

[0039] The PEO-PDMS-PEO in this embodiment is EO 60 -DMS 90 -EO 60 (M w =11940), purchased from Wacker Chemie Co., Ltd., Germany, and was not further processed before use.

Embodiment 3 2

[0040] Example 3 Preparation of two-dimensional ordered mesoporous polymer / silicon oxide and carbon / silicon oxide nanocomposites

[0041] Put the above-mentioned As-made intermediate in a tube furnace for roasting under the protection of nitrogen gas, roast at 350°C for 3 hours to obtain a two-dimensional ordered mesoporous polymer / silicon oxide nanocomposite, and roast at 900°C for 2 hours to obtain a two-dimensional organic Sequenced mesoporous carbon / silicon oxide nanocomposites; during the firing process, when the temperature is below 600°C, the heating rate is set to 1°C / min, and when the temperature is above 600°C, the heating rate is set to 5°C / min. The sample obtained by roasting at 350°C under nitrogen atmosphere is marked as MP-CS-350N, and the sample obtained by roasting at 900°C under nitrogen atmosphere is marked as MP-CS-900N.

[0042] Embodiments 1, 2, and 3 are the preferred solutions of the present invention. In addition, the types of materials, dosage ratio...

Embodiment 4

[0043] Example 4 The small-angle X-ray scattering (SAXS) measurement was carried out on the obtained sample by Nanostar U small-angle X-ray scattering instrument (CuKα) from Bruker, Germany. The tube pressure was 40kV, the tube flow was 35mA, and the recording time was 30min. The resulting SAXS as figure 1 shown. Depend on figure 1 It can be seen that three clear diffraction peaks appear on the SAXS spectrum of the As-made sample, corresponding to the diffraction peaks of the 10, 11 and 20 crystal planes of the two-dimensional hexagonal p6m structure, and the q value ratio of the three diffraction peaks is The mesoporous polymer / silicon oxide nanocomposite material was obtained by roasting at 350°C under an inert atmosphere of nitrogen. The mesoscopic structure of the degree is preserved. Calculated from the SAXS spectrum, the unit cell parameters of the nanocomposite before and after calcination are 15.8 and 14.0nm respectively, indicating that the skeleton shrinks by 11....

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Abstract

The invention discloses a meso pore high-molecular or carbon / silicon oxide composite material possessing a two-dimensional pore passage structure, the preparation method comprises the following steps: taking PEO-PDMS-PEO as a template, taking a phenolic resin prepolymer Resol as a carbon source precursor, mixing and reacting to obtain an As-made intermediate, and casting to prepare the product; in an As-made intermediate small-angle x-ray scattering (SAXS) spectrum, the ratio of the q value of the diffraction peak of a 10 crystal face to the diffraction peak of a 11 crystal face to the diffraction peak of a 20 crystal face is 1: square root of 3: square root of 4. The specific surface area of the meso pore nanocomposite material possessing the two dimension hexagonal p6m pore passage structure is in a range of 600-1500m<2> / g, the scope of the pore volume is 0.6-0.8cm<3> / g, the size of the aperture is in a range of 4.5-7.5, and the stability of a meso pore material frame can reach as high as 900 DEG C; The high-molecular or carbon / silicon oxide nanocomposite material possessing the two-dimensional pore passage structure is especially suitable for the fields of super capacitor electrode materials, adsorbent, catalyst carrier, biological molecule separation, gas-sensitive materials, optoelectronic devices and hydrogen storage.

Description

technical field [0001] The invention relates to the technical field of new nanometer materials, in particular to a nanocomposite material with a two-dimensional cubic p6m channel structure and a preparation method thereof. Background technique [0002] Ordered mesoporous materials are porous materials with regular pore structures and pore diameters ranging from 2 to 50 nm, which are assembled through the interface interaction between organic and inorganic substances based on surfactant molecular aggregates as templates. Mesoporous materials have the following superior characteristics: ①Long-range, that is, mesoscopic horizontal structure and orderly pore structure; ②The pore size distribution is narrow, and the pore size can be continuously adjusted; ③By optimizing the synthesis conditions or post-processing, it can have good thermal stability. and hydrothermal stability; ④ extremely high specific surface area, up to 600 ~ 2000m 2 / g; ⑤The particles have a regular shape and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/02C01B33/12B82Y40/00C08L61/06C08K3/36C08J9/26C01B32/15
Inventor 刘玉荣
Owner CHONGQING UNIV OF ARTS & SCI
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