Nano CO2 Capture Agent for Crop Photosynthesis
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Solution Overview
Problem
Current carbon dioxide capture agents, such as non-carbonaceous and carbonaceous adsorbents, face limitations in efficiency, cost, and applicability, especially when used in plant photosynthesis, with existing methods having high energy consumption, poor adsorption performance, and limited selectivity, and none are directly suitable for plant leaves.
Innovation Solution
A method for preparing a nano carbon dioxide capture agent involving the preparation of an organic modified mineral soil solution, modified chitosan solution, graphene oxide dispersion, and hydrotalcite, using cationic surfactants and organic amines to enhance adsorption capacity and photocatalytic effects, which can be applied to plant leaves for improved CO2 capture and photosynthesis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If non-carbonaceous adsorbents like zeolite and Shi Ying are used, then the price is low, but the adsorption performance is poor and regeneration energy consumption is high
Solution Approach 1:
The patent uses composite materials by combining mineral soil particles with chitosan and cationic surfactants to create a composite adsorbent that integrates the low cost of mineral soil with the enhanced adsorption properties of chitosan-surfactant complexes, resolving the contradiction between low price and poor adsorption performance
Solution Approach 2:
The patent modifies the chemical parameters of mineral soil by introducing cationic surfactants and chitosan coatings, changing the surface properties and charge characteristics to improve adsorption performance while maintaining the base material's low cost
2Manufacturing precision
If metal-organic framework MOFs are used, then the pore size is easy to control, but the cost is high and it is unsuitable for high-temperature use
Solution Approach 1:
The patent replaces expensive MOF materials with cheaper mineral soil-based composites that, while potentially having shorter operational lifespan, provide cost-effective CO2 capture functionality without requiring the high precision pore control that drives up MOF costs
3Adaptability or versatility
If alkali metal-based materials like K and Na are used, then they can absorb carbon dioxide in humid environment, but the adsorption performance is poor and desorption energy consumption is high
Solution Approach 1:
The patent creates composite materials combining alkali metal-based mineral soil particles with chitosan and cationic surfactants, where the chitosan-surfactant complex enhances adsorption performance while the mineral soil core provides humid environment stability
4Reliability
If activated carbon fiber is used, then it has water resistance and stability, but the adsorption capacity is limited and particle size is large
Solution Approach 1:
The patent utilizes the porous structure of mineral soil particles and enhances it through chitosan coating, creating a porous composite material that increases surface area and adsorption capacity while maintaining water resistance, avoiding the large particle size limitation of activated carbon fibers
5Quantity of substance
If liquid amine and alcohol amine solutions are used, then the adsorption capacity is high and selectivity is good, but the cost is high and equipment corrosion is difficult to recover
Solution Approach 1:
The patent replaces liquid amine solutions with a solid-phase chitosan-cationic surfactant composite coating on mineral soil particles, substituting the liquid absorption mechanism with solid-phase adsorption, thereby eliminating equipment corrosion while maintaining high adsorption capacity
Solution Approach 2:
The patent changes the physical state parameter from liquid to solid phase by forming a composite coating on solid mineral soil particles, transforming the system from liquid amine absorption to solid-phase adsorption, which eliminates corrosion issues
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 nano carbon dioxide capture agent enhances photosynthetic rates, inhibits light respiration, synthesizes chlorophyll, and accumulates essential elements for crop growth, effectively capturing and transforming CO2 into organic components, promoting crop gestation, growth, and maturity while increasing production and income.
Implementation Method 1
dissolving a mineral soil and a cationic surfactant in deionized water respectively, adding into a reaction kettle, heating and stirring
Implementation Method 2
dissolving a chitosan in an acetic acid, adding the acetic aid into a reaction kettle, stirring and dissolving, dripping a cationic surfactant until the chitosan is completely dissolved
Implementation Method 3
dripping the modified chitosan solution into the organic modified mineral soil solution under a stirring condition, stirring for homogenization and ultrasonically dispersing
Implementation Method 4
adding a graphene oxide into deionized water, stirring and dispersing to obtain a graphene oxide dispersion
Implementation Method 5
adding the obtained organic modified mineral soil loaded modified chitosan nano level powder in the step (3) into the graphene oxide dispersion, reacting in a reactor
Data Source
AI summary
A method for preparing a nano carbon dioxide agent and an application of the agent are disclosed. The method takes cationic surfactant modified bentonite as a carrier, and the CO2 nano agent prepared by loading cationic surfactant modified chitosan, graphene oxide and organic alkali modified hydrotalcite has the photocatalytic effect of nano materials, which can enhance photosynthesis, increase photosynthetic rate, inhibit light respiration at night, synthesize chlorophyll for crop growth, accumulate three essential elements of carbon, hydrogen and oxygen for crop growth, effectively absorb, synthesize and transform organic components such as nitrogen, phosphorus and potassium in soil, fully promote the gestation, growth and maturity of crops, and increases production and income. The CO2 capture agent of the disclosure can be used for both facility crops and field crops, and the CO2 capture agent under normal temperature and pressure has wide application.