Azo-linked polymer for CO2 capture and metal removal
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Solution Overview
Problem
Current azo-linked porous organic polymers for CO2 capture and metal ion removal often require harmful solvents, expensive catalysts, and high temperatures, making them costly and environmentally unfriendly, limiting their large-scale industrial implementation.
Innovation Solution
A novel azo-linked polymer synthesized using a facile and environmentally friendly method, incorporating 1,3,5-trihydroxybenzene and a compound A through an azo bond, with a honeycomb structure, offering high thermal stability, selective CO2 uptake, and efficient metal ion adsorption, while avoiding the use of harmful solvents and high temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional azo-linked porous organic polymers are synthesized using traditional methods, then CO2 capture and metal ion removal performance is achieved, but harmful solvents, expensive catalysts, and high temperatures are required
Solution Approach 1:
The synthesis method changes key parameters: temperature reduced from high to room temperature (25°C), solvent changed from harmful organic solvents to water, and catalyst changed from expensive metal catalysts to iron salts. These parameter changes maintain polymer performance while eliminating harmful factors
Solution Approach 2:
The patent replaces expensive catalysts with cheap iron salts as catalyst and water as solvent, using inexpensive, readily available materials to achieve the same synthesis objectives without requiring costly or hazardous substances
2Reliability
If azo-linked porous organic polymers are synthesized using conventional methods, then functional performance is achieved, but synthesis cost is high
Solution Approach 1:
The patent uses inexpensive starting materials including water as solvent and iron salts as catalyst instead of expensive organic solvents and metal catalysts, dramatically reducing synthesis cost while maintaining functional performance
Solution Approach 2:
The synthesis conditions are optimized to use room temperature and water, eliminating the need for expensive high-temperature equipment and energy consumption, thereby reducing manufacturing costs while achieving functional polymers
3Reliability
If azo-linked porous organic polymers are synthesized using traditional methods, then CO2 capture capability is achieved, but environmental friendliness is compromised
Solution Approach 1:
The patent replaces harmful organic solvents with water and expensive metal catalysts with iron salts, using environmentally benign, biodegradable materials that do not persist in the environment or cause pollution
Solution Approach 2:
The patent uses water as an inert, non-polluting solvent that creates a safe reaction environment, eliminating the need for harmful organic solvents and creating an environmentally friendly synthesis process that protects against environmental harm
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 polymer achieves high CO2 uptake and selective adsorption of metal ions with high efficiency and thermal stability up to 250°C, demonstrating a cost-effective and environmentally friendly solution for CO2 capture and metal ion removal, with recyclability and high adsorption capacities.
Implementation Method 1
POPs are commonly constructed by robust covalent bonds, which make their porous structure a prominent sorbent candidate for efficient CO2 capture
Implementation Method 2
The azo-linked POPs with nitrogen double bonds work as selective binding sites for the CO2 and metal ions
Implementation Method 3
The chemical stability of the POPs also allows them to have an excellent ability to survive in harsh environmental conditions of water at different pHs and can be used for removing toxic metal ions
Data Source
AI summary
A polymer including reacted units of 1,3,5-trihydroxybenzene and a compound A represented by Formula (I) below,in Formula (I), n=0-5. Compound A is bonded to the 1,3,5-trihydroxybenzene through an azo bond to form the polymer, represented by Formula (II) below,Formula (II), represents a repeating unit of the polymer.