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Porous boron carbonitride nanosheet layer and porous boron nitride nanosheet layer as well as preparation methods and applications of porous boron carbonitride nanosheet layer and porous boron nitride nanosheet layer as absorbing materials

A nanosheet, boron-carbon-nitrogen technology, applied in the field of nanomaterials, can solve the problems of low capture capacity of h-BN, and achieve the effects of low raw material prices, easy scale-up production, and good process repeatability

Active Publication Date: 2019-05-21
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These findings suggest that h-BN captures CO 2 The capacity is very low, and it is necessary to continue to optimize the structure in order to obtain better capture of CO 2 Performance of porous h-BN materials

Method used

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  • Porous boron carbonitride nanosheet layer and porous boron nitride nanosheet layer as well as preparation methods and applications of porous boron carbonitride nanosheet layer and porous boron nitride nanosheet layer as absorbing materials
  • Porous boron carbonitride nanosheet layer and porous boron nitride nanosheet layer as well as preparation methods and applications of porous boron carbonitride nanosheet layer and porous boron nitride nanosheet layer as absorbing materials
  • Porous boron carbonitride nanosheet layer and porous boron nitride nanosheet layer as well as preparation methods and applications of porous boron carbonitride nanosheet layer and porous boron nitride nanosheet layer as absorbing materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Preparation of porous boron carbon nitrogen (BCN) nanosheets: Weigh 3.0914g of boric acid into a round-bottomed flask, add 300mL of distilled water, place the round-bottomed flask in a 60°C oil bath and heat to a constant temperature. After the boric acid is completely dissolved, weigh Measure 3.1541g of melamine into the round bottom flask, wherein the molar ratio of boric acid: melamine is 2:1, add a rubber stopper to the mouth of the round bottom flask, stir at 60°C for 3 hours, then raise the temperature of the oil bath to 90°C, stir for 8h, Then remove the bottle stopper and dry it with stirring at 90°C. The dried solid was taken out of a mortar and ground to a fine powder. Add the ground solid powder into a quartz boat, put it into a tube furnace, raise the temperature to 800°C at 2°C / min under an argon atmosphere, keep it for 6 hours, and drop it to room temperature under an argon atmosphere. The obtained sample is BCN material.

[0072] Raise the temperature o...

Embodiment 2

[0079] Preparation of porous boron carbon nitrogen (BCN) nanosheets: Weigh 3.0899g of boric acid into a round-bottomed flask, add 300mL of distilled water, place the round-bottomed flask in a 60°C oil bath and heat to a constant temperature. After the boric acid is completely dissolved, weigh Measure 6.3047g of melamine into the round bottom flask, in which the molar ratio of boric acid: melamine is 1:1, put a rubber stopper on the mouth of the round bottom flask, stir at 60°C for 2 hours, heat the oil bath to 100°C, and stir for 7h , and then remove the bottle stopper, and stir and dry at 100°C. The dried solid was taken out of a mortar and ground to a fine powder. Put the ground solid powder into a quartz boat, put it into a tube furnace, raise the temperature to 800°C at 10°C / min under an argon atmosphere, keep it for 4 hours, and then drop it to room temperature under an argon atmosphere. The obtained sample is Porous boron carbon nitrogen (BCN) nanosheets.

[0080] The ...

Embodiment 3

[0084] Preparation of porous boron carbon nitrogen (BCN) nanosheets: Weigh 3.0673g of boric acid into a round-bottomed flask, add 300mL of distilled water, place the round-bottomed flask in a 60°C oil bath and heat to a constant temperature. After the boric acid is completely dissolved, weigh Measure 6.3221g of melamine into the round bottom flask, wherein the molar ratio of boric acid: melamine is 1:1, put a rubber stopper on the mouth of the round bottom flask, stir at 60°C for 3 hours, heat the oil bath to 90°C, stir After 8 hours, remove the bottle stopper and dry it with stirring at 100°C. The dried solid was taken out of a mortar and ground to a fine powder. Add the ground solid powder into a quartz boat, put it into a tube furnace, raise the temperature to 700°C at 5°C / min in an argon atmosphere, keep it for 6 hours, and drop it to room temperature under argon atmosphere to obtain a sample as follows: Porous boron carbon nitrogen (BCN) nanosheets.

[0085] The porous ...

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Abstract

The invention provides a preparation method of a porous boron carbonitride nanosheet and a preparation method of a porous boron nitride nanosheet. The preparation method of the porous boron carbonitride nanosheet comprises the steps of mixing a boron source and a solvent, performing heating and dissolution, adding a carbonitride source, placing in a closed reaction vessel, performing heating and stirring, evaporating water, and performing grinding and heat treatment in inert gas to obtain the porous boron carbonitride nanosheet. The preparation method of the porous boron nitride nanosheet comprises the steps of performing heat treatment on the porous boron carbonitride nanosheet in ammonia, and cooling to a room temperature in inert gas to obtain the porous boron nitride nanosheet. The porous boron carbonitride nanosheet and the porous boron nitride nanosheet are applied to an absorbing material which has higher CO2 absorbing performance, separation performance and cyclic absorbing performance.

Description

technical field [0001] The invention relates to a porous boron carbon nitrogen nano-sheet layer and a porous boron nitride nano-sheet layer, a preparation method thereof and an application as an adsorption material, belonging to the technical field of nanomaterials. Background technique [0002] CO emissions from fossil fuel combustion 2 It has caused a series of global environmental problems such as global warming, melting glaciers, rising sea levels, increasing acidity of seawater, and climate anomalies, which seriously threaten the survival and development of human beings, making people eager to seek to reduce CO in the atmosphere. 2 method of gas content. Carbon capture and storage (carbon capture and storage, CCS) is one of the technical solutions proposed by scientists to reduce carbon dioxide emissions and prevent climate deterioration. traditional CO capture 2 The most common method is to use amine solutions, such as monoethanolamine in power plants to capture CO ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B21/082C01B21/064B82Y40/00B01J20/02B01J20/28B01J20/30B01D53/02
CPCY02P20/151Y02C20/40
Inventor 傅强陈思如
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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