Mesoporous nano carbon sphere as well as preparation method and application thereof

A nano-carbon sphere and mesoporous technology, applied in the field of nano-materials, can solve the problems of waste of resources, environmental pollution, not easy to scale up production, and non-compliance with green chemistry, and achieve reduced solvent consumption, excellent physical and chemical properties, and stable output Effect

Pending Publication Date: 2021-05-07
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Porous carbon nanospheres have been developed at home and abroad, but most of the synthesis methods are relatively complicated, often requiring a lot of steps in the synthesis process, and the output is low, the produc

Method used

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  • Mesoporous nano carbon sphere as well as preparation method and application thereof
  • Mesoporous nano carbon sphere as well as preparation method and application thereof
  • Mesoporous nano carbon sphere as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Weigh 20mg Dissolve F127 in a mixed solvent of 7mL water and 7mL ethanol, add 100μL 1,3,5-trimethylbenzene and 155μL ammonia water under stirring at 25°C, then add 0.25g resorcinol and 0.15mL formaldehyde, and pass through at 200rpm Stirring was continued for 3 hours, followed by centrifugation at 6000 rpm for 4 minutes to centrifuge the product, wash it twice with water and ethanol, and finally dry it in an oven at 60° C. for 20 hours. Raise the dried triblock copolymer / resorcinol formaldehyde resin nanopolymer balls to 450°C at a rate of 10°C / min under a nitrogen atmosphere, keep it warm for 5 hours, and then increase the temperature at a rate of 10°C / min to 450°C. To 1000 ℃, keep 3h. Finally, the temperature is naturally lowered to room temperature to obtain mesoporous carbon nanospheres.

Embodiment 2

[0061] Weigh 40mg Dissolve F127 in a mixed solvent of 14mL water and 6mL ethanol, add 200μL 1,3,5-trimethylbenzene and 310μL ammonia water while stirring at 25°C, then add 0.5g resorcinol and 0.3mL formaldehyde, and pass through at 400rpm Stirring was continued for 3 hours, followed by centrifugation at 8000 rpm for 3 minutes to centrifuge the product, wash it twice with water and ethanol, and finally dry it in an oven at 70° C. for 12 hours. Raise the dried triblock copolymer / resorcinol-formaldehyde resin nanopolymer spheres to 450°C at a rate of 4°C / min under nitrogen atmosphere, keep it warm for 4 hours, and then increase the temperature at a rate of 4°C / min Rise to 700°C and keep for 4h. Finally, the temperature is naturally lowered to room temperature to obtain mesoporous carbon nanospheres.

Embodiment 3

[0063] Weigh 40mg Dissolve F127 in a mixed solvent of 12mL water and 8mL ethanol, add 200μL 1,3,5-trimethylbenzene and 310μL ammonia water while stirring at 40°C, then add 0.4g resorcinol and 0.3mL formaldehyde, and pass through at 7000rpm Continuous stirring for 10 hours, followed by centrifugation at 10,000 rpm for 3 minutes to centrifuge the product, wash it twice with water and ethanol, and finally place it in an oven at 80° C. for 6 hours. Raise the dried triblock copolymer / resorcinol-formaldehyde resin nanopolymer balls to 300°C at a rate of 10°C / min under a nitrogen atmosphere, keep the temperature for 6 hours, and then increase the temperature at a rate of 10°C / min Rise to 600°C and keep for 6h. Finally, the temperature is naturally lowered to room temperature to obtain mesoporous carbon nanospheres.

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Abstract

The invention discloses mesoporous nano carbon spheres as well as a preparation method and an application thereof, and belongs to the technical field of nano materials. The preparation method comprises the following steps: dissolving a template agent in a water-alcohol solution, adding a pore-enlarging agent into the solution, and adjusting the pH value to be alkaline to obtain a dispersion liquid II; and adding a phenolic polymer monomer and formaldehyde into the dispersion liquid II, stirring at 25-70 DEG C to carry out polymerization reaction, and after the reaction is finished, separating, washing, drying and carbonizing to obtain the mesoporous carbon nanospheres, and the template agent is an amphoteric polymer; the pore-enlarging agent is a hydrophobic organic matter; the method has the advantages of simple operation, low cost, high yield, uniform product, stable output and the like, and has commercialization prospects; the pore channels of the prepared mesoporous carbon nanospheres are vertical pore channels and are in a radial shape from inside to outside, the diameters of the mesoporous carbon nanospheres are about 150-200nm, and the prepared mesoporous carbon nanospheres have excellent physical and chemical properties, so that the mesoporous carbon nanospheres are suitable for being applied to the fields of adsorption, separation, catalysis, energy storage and conversion, drug delivery and the like.

Description

technical field [0001] The present application relates to the technical field of nanomaterials, in particular to a mesoporous nanocarbon sphere and its preparation method and application. Background technique [0002] Due to the excellent physical and chemical properties of porous carbon nanospheres, such as large surface area, low density, high mechanical stability and chemical inertness (resistance to acidic and alkaline environments), good biocompatibility and excellent delivery Capabilities, etc., have applications in many research fields, such as adsorption, separation, catalysis, energy storage and conversion, and drug delivery. Therefore, porous nanocarbon spheres have great potential for commercialization. [0003] Porous carbon nanospheres have been developed at home and abroad, but most of the synthesis methods are relatively complicated, often requiring a lot of steps in the synthesis process, and the output is low, the product form is unstable, and the amount of...

Claims

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Application Information

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IPC IPC(8): C01B32/05
CPCC01B32/05
Inventor 刘健田强景铃胭陈艳平
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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