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Functional mesoporous material embedded with nanoparticles, in-situ embedding assembly method and application thereof

A technology of mesoporous materials and nanoparticles, which is applied in the field of material preparation, can solve the problems of difficulty in controlling the size, composition and shape of nanoparticles, and difficulty in establishing structure-activity relationships, etc., and achieve high utilization efficiency, strong accessibility, and high ratio The effect of surface area

Active Publication Date: 2021-11-09
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of ternary co-assembly, the assembly and nucleation of nanoparticles occur simultaneously, which makes it difficult to control the properties of nanoparticles (such as size, composition, and shape, etc.), and ultimately makes it difficult to establish an effective structure-activity relationship in the future.

Method used

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  • Functional mesoporous material embedded with nanoparticles, in-situ embedding assembly method and application thereof
  • Functional mesoporous material embedded with nanoparticles, in-situ embedding assembly method and application thereof
  • Functional mesoporous material embedded with nanoparticles, in-situ embedding assembly method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0043] Add 0.10 g of F127 (surfactant) into 5.0 mL of tetrahydrofuran, and stir at room temperature for 30 min to obtain a clear and transparent solution. Then, 0.50 g of phenolic resin and 3.0 mg of iron ferric oxide nanoparticles with a size of about 4.5 nm were added to the above transparent solution, and the stirring was continued for 30 min. The mixed solution was then transferred to a glass petri dish (20x20cm 2 , add about 1.5mL solution to each petri dish), volatilize at room temperature for 8h to evaporate tetrahydrofuran, and then put it into an ordinary oven to continue curing at 100°C for 24h. The obtained film was scraped off from the petri dish, and then placed in a tube furnace for carbonization at 500°C for 4 hours under the protection of nitrogen to obtain a functionalized mesoporous carbon material embedded with Fe3O4 nanoparticles.

[0044] See figure 1 , in the present embodiment with surfactant Pluronic F127 (EO 106 -PO 70 -EO 106 ) as a template, pheno...

Embodiment 2

[0050] 0.10g of F127 was added to 5.0mL of tetrahydrofuran and stirred at room temperature for 30min to obtain a clear and transparent solution. Then, 0.50 g of phenolic resin and 10 mg of iron ferric oxide nanoparticles with a size of about 4.5 nm were added to the above transparent solution, and the stirring was continued for 30 min. The mixed solution was then transferred to a glass petri dish (20x20cm 2 , add about 1.5mL solution to each petri dish), volatilize at room temperature for 8h to evaporate tetrahydrofuran, and then put it into an ordinary oven to continue curing at 100°C for 24h. The obtained film was scraped off from the petri dish, and then placed in a tube furnace for carbonization at 500°C for 4 hours under the protection of nitrogen to obtain a functionalized mesoporous carbon material embedded with high-concentration Fe3O4 nanoparticles.

[0051] Figure 6 It is the transmission electron microscope image of the functionalized mesoporous carbon material i...

Embodiment 3

[0053] 0.10g of F127 was added to 5.0mL of tetrahydrofuran and stirred at room temperature for 30min to obtain a clear and transparent solution. Then, 0.50 g of phenolic resin and 2.0 mg of palladium nanoparticles with a size of about 3.0 nm were added to the above transparent solution, and the stirring was continued for 30 min. The mixed solution was then transferred to a glass petri dish (20x20cm 2 , add about 1.5mL solution to each petri dish), volatilize at room temperature for 8h to evaporate tetrahydrofuran, and then put it into an ordinary oven to continue curing at 100°C for 24h. The obtained film was scraped off from the petri dish, and then placed in a tube furnace for carbonization at 500° C. for 4 h under the protection of nitrogen to obtain a functionalized mesoporous carbon material embedded with palladium nanoparticles.

[0054] Figure 7 It is a transmission electron microscope image of the functionalized mesoporous carbon material inlaid with palladium nanop...

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Abstract

The invention relates to a functional mesoporous material embedded with nanoparticles, an in-situ embedding assembly method and application thereof. The method comprises the following steps: firstly, dissolving a surfactant, nanoparticles and a soluble resin in an organic solvent; along with the volatilization of the solvent, enabling the soluble resin to be subjected to coordination and hydrogen bond interaction with the nanoparticles and the surfactant respectively, and driving assembly to form an ordered mesostructure; at a relatively low temperature, further polymerizing and cross-linking the resin precursor to stabilize a mesostructure; and finally, performing high-temperature carbonization in an inert atmosphere, and removing the surfactant to form a mesoscopic skeleton. The prepared functional mesoporous material can show excellent performance when applied to catalytic oxidation of cinnamyl alcohol, the provided method is simple, convenient, easy to repeat and high in universality, and the obtained material has wide application prospects in the field of catalysis.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and relates to a functional mesoporous material embedded with nanoparticles, an in-situ embedding assembly method and its application. Background technique [0002] Mesoporous materials have high specific surface area, rich composition, and tunable mesoscopic structure and morphology, and are widely used in energy storage and catalysis. Especially in the field of catalysis, mesoporous materials are ideal catalytic supports and are widely used in different catalytic reactions. During the reaction, the porous structure can enhance the transport of species during the reaction. In addition, the confinement of nanopores can increase the contact between reactants and active sites, improve the accessibility and utilization efficiency of active sites, and maximize the catalytic performance. In order to give full play to the advantages of mesoporous materials as catalytic supports, research...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/745B01J23/44B01J35/10C07C45/29C07C47/232
CPCB01J23/745B01J23/44C07C45/29B01J35/399B01J35/393B01J35/23B01J35/617B01J35/647C07C47/232
Inventor 李伟张威朱科润赵东元
Owner FUDAN UNIV
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