Surfactant-stabilized foamed geopolymers as sponge-city filter modules: structure–property links for adsorption, filtration, and insulation

Key Points

• Effective adsorption properties are linked to the unique structure of surfactant-stabilized geopolymers, making them suitable for water treatment.
• Filtration performance is enhanced by the optimized pore structure in surfactant-stabilized foamed geopolymers, indicating their utility in urban environments.
• Experimental methods demonstrate how these materials can provide insulation, improving energy efficiency in sponge cities.
• Findings suggest that integrating these geopolymers could significantly advance urban sustainability practices.