Preparation method of asymmetric hollow porous composite material

A porous composite material, asymmetric technology, applied in the preparation/purification of carbon, chemical instruments and methods, carbon compounds, etc., can solve the problems of complicated steps, large environmental pollution, high cost, and achieve the effect of simple and easy method.

Pending Publication Date: 2022-04-15
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structure of the material obtained by this method is single, and it is difficult to further control
At the same time, the method has complicated steps, and finally needs to use strong alkali sodium hydroxide to etch silicon dioxide, which requires high requirements for experimental instruments, causes great environmental pollution, and costs high

Method used

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  • Preparation method of asymmetric hollow porous composite material
  • Preparation method of asymmetric hollow porous composite material
  • Preparation method of asymmetric hollow porous composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044]Pipette 200.0mL of deionized water into a 500mL round bottom flask, then add 14g of polystyrene balls, 0.6g of 3-methacryloyloxypropyltrimethoxysilane, 0.6g of sodium lauryl sulfate, 0.6 g of potassium persulfate and 0.3mL of ammonia water were mixed uniformly and reacted at 80°C for 8h. After taking it out, it is centrifuged, rinsed with water and ethanol respectively, and dried to obtain asymmetric structure organosilicon-polystyrene nanoparticles. Subsequently, 1 g of asymmetric structure silicone-polystyrene nanoparticles was added into 200 mL of 0.1 mol / L Tris hydrochloride solution, and reacted at 35° C. for 8 h. After taking it out, it is centrifuged, rinsed with water and ethanol respectively, and dried to obtain an asymmetric composite material coated with polydopamine. 1.0 g of polydopamine-coated asymmetric composite material was calcined at 650° C. for 2 h under nitrogen atmosphere to obtain an asymmetric hollow porous composite material.

[0045] The scann...

Embodiment 2

[0047] Pipette 200.0mL of deionized water into a 500mL round bottom flask, then add 14g of polystyrene balls, 0.1g of 3-methacryloyloxypropyltrimethoxysilane, 0.6g of sodium lauryl sulfate, 0.6 g of potassium persulfate and 0.3mL of ammonia water were mixed uniformly and reacted at 80°C for 8h. After taking it out, it is centrifuged, rinsed with water and ethanol respectively, and dried to obtain asymmetric structure organosilicon-polystyrene nanoparticles. Subsequently, 1 g of asymmetric structure silicone-polystyrene nanoparticles was added into 200 mL of 0.1 mol / L Tris hydrochloride solution, and reacted at 35° C. for 8 h. After taking it out, it is centrifuged, rinsed with water and ethanol respectively, and dried to obtain an asymmetric composite material coated with polydopamine. 1.0 g of polydopamine-coated asymmetric composite material was calcined at 650° C. for 2 h under nitrogen atmosphere to obtain an asymmetric hollow porous composite material.

[0048] The SEM ...

Embodiment 3

[0050] Pipette 200.0mL of deionized water into a 500mL round bottom flask, then add 14g of polystyrene balls, 1.2g of 3-methacryloyloxypropyltrimethoxysilane, 0.6g of sodium lauryl sulfate, 0.6 g of potassium persulfate and 0.3mL of ammonia water were mixed uniformly and reacted at 80°C for 8h. After taking it out, it is centrifuged, rinsed with water and ethanol respectively, and dried to obtain asymmetric structure organosilicon-polystyrene nanoparticles. Subsequently, 1 g of asymmetric structure silicone-polystyrene nanoparticles was added into 200 mL of 0.1 mol / L Tris hydrochloride solution, and reacted at 35° C. for 8 h. After taking it out, it is centrifuged, rinsed with water and ethanol respectively, and dried to obtain an asymmetric composite material coated with polydopamine. 1.0 g of polydopamine-coated asymmetric composite material was calcined at 650° C. for 2 h under nitrogen atmosphere to obtain an asymmetric hollow porous composite material.

[0051] The SEM ...

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Abstract

The invention discloses a preparation method of an asymmetric hollow porous composite material, which comprises the following steps: taking polystyrene spheres as a substrate, adding an organic silicon precursor, a stabilizer, an initiator and a catalyst, and reacting to obtain organic silicon-polystyrene nanoparticles with asymmetric structures; coating the organic silicon-polystyrene nanoparticles in a tris (hydroxymethyl) aminomethane hydrochloride solution by taking dopamine hydrochloride as a precursor to obtain an asymmetric composite material, and further performing high-temperature calcination in an inert gas environment to obtain the asymmetric hollow porous composite material. The method has simple steps and can realize large-scale production. The invention provides a novel idea for designing and preparing the symmetrical hollow porous composite material.

Description

technical field [0001] The invention relates to the field of preparation of composite materials, in particular to a preparation method of an asymmetric hollow porous composite material. Background technique [0002] Due to the advantages of large specific surface area, large pore volume, and high specific volume ratio, hollow nanomaterials have broad application prospects in catalysis, energy storage and conversion, and biomedicine. Among them, hollow nanoparticles with asymmetric structure have attracted increasing attention for their potential applications in fields such as nanomotors, and also provide important insights into the building blocks in the assembly process. Although some progress has been made in the preparation of asymmetric hollow nanoparticles, their practical applications are severely restricted due to the complex synthesis process, low yield, and high cost. [0003] In recent years, hollow nanoparticles with a porous structure have the characteristics of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B21/068C01B21/082C01B32/05C01B32/977C01B33/021
CPCC01B21/068C01B21/0605C01B21/0828C01B32/977C01B32/05C01B33/021C01P2004/04C01P2004/34C01P2004/62C01P2004/80
Inventor 孔彪谢磊何彦君曾洁
Owner FUDAN UNIV
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