COF-Carbon Complex for Gas Adsorption
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Solution Overview
Problem
Current porous materials, such as carbon nanotubes and graphene, face limitations due to strong van der Waals interactions which result in poor dispersion and reduced gas selectivity and storage capacity, necessitating a solution to enhance their specific surface area and pore volume for applications in gas adsorption and separation.
Innovation Solution
A complex is formed by synthesizing a covalent organic framework (COF) on the surface of a carbon structure, utilizing ultrasonic treatment to adsorb and synthesize COF reactants, thereby increasing the specific surface area and pore volume, specifically using carbon nanotubes, graphene, or their derivatives as the carbon structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If carbon nanotubes and graphene are used as porous materials, then they provide huge surface area, but strong van der Waals interactions result in poor dispersion
Solution Approach 1:
The patent introduces COF molecules as intermediaries that adsorb onto the carbon structure surface. These COF molecules act as spacers that reduce van der Waals interactions between carbon structures, improving dispersion while maintaining the huge surface area provided by the carbon nanotubes and graphene.
Solution Approach 2:
The patent creates a composite material system consisting of carbon structures coated with COF molecules. This composite approach combines the advantages of both materials: the huge surface area of carbon structures with the improved dispersion properties of COF-coated surfaces, resolving the contradiction between surface area and dispersion stability.
2Area of stationary object
If carbon structures are used for gas adsorption, then they provide huge surface area, but gas selectivity and storage capacity are reduced
Solution Approach 1:
The patent applies local quality modification by coating the carbon structure surface with COF molecules that have specific chemical affinities for target gases. This creates regions with enhanced gas selectivity on the carbon structure surface, allowing the material to maintain its huge surface area while improving gas selectivity and storage capacity through the COF's selective adsorption properties.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The resulting complex exhibits improved gas adsorption capacity and selectivity, surpassing standalone carbon structures and COFs in terms of specific surface area and pore volume, making it suitable for gas adsorption, storage, separation, and catalytic applications.
Implementation Method 1
adding the carbon structure and reactants used for synthesizing covalent organic framework to a solvent, followed by ultrasonic treatment
Implementation Method 2
utilizing ultrasonic treatment to adsorb and synthesize COF reactants
Implementation Method 3
The resulting complex exhibits improved gas adsorption capacity and selectivity, surpassing standalone carbon structures and COFs in terms of specific surface area and pore volume
Implementation Method 4
carbon nanotube (CNT) and graphene combine their remarkable electrical, chemical, thermal, optical, and mechanical properties with a huge surface area
Data Source
AI summary
The present invention relates to a complex comprising a covalent organic framework (COF) synthesized on the surface of a carbon structure, a preparation method therefor, and use thereof, and specifically to a complex of a carbon structure and a covalent organic framework, wherein the specific surface area or pore volume of the covalent organic framework synthesized on the surface of the carbon surface is larger than the specific surface area or the pore volume of the covalent organic framework prepared without the carbon structure; a preparation method therefor; and use thereof.