Implementation of Genetic Algorithms to Optimize Metal-Organic Frameworks for CO₂ Capture

Area of Science:

• Materials Science
• Chemical Engineering
• Computational Chemistry

Background:

• Metal-organic frameworks (MOFs) show promise for energy-efficient CO2 capture.
• The vast number of potential MOFs necessitates efficient screening methods.
• Current industrial CO2 capture methods are energy-intensive.

Purpose of the Study:

• To develop an efficient computational approach for identifying high-performance MOFs for CO2 capture.
• To analyze the impact of genetic algorithm (GA) parameters on screening efficiency.
• To optimize MOF structures for CO2 capture using multi-objective functions.

Main Methods:

• Utilized a genetic algorithm (GA) coupled with grand canonical Monte Carlo (GCMC) simulations.
• Performed GCMC simulations dynamically during the GA search.
• Optimized MOF structures based on CO2 selectivity and working capacity.

Main Results:

• The GA successfully identified top-performing MOFs for CO2 capture.
• GA parameter effects (mutation probability, population size, generations) were analyzed.
• Computational cost was reduced by a factor of 25 compared to brute-force screening.

Conclusions:

• GA-GCMC is an effective strategy for accelerated discovery of MOFs for CO2 capture.
• This approach balances key performance metrics like selectivity and capacity.
• Significant reduction in simulation costs enables faster materials discovery.