Schematic illustration of the triple-synergistic mechanism of SCG modification. (IMAGE)

Tsinghua University Press

Schematic illustration of the triple-synergistic mechanism of SCG modification.

Caption

Spent coffee grounds improve lithium orthosilicate ceramic sorbents in three complementary ways. Their thermal decomposition creates a hierarchical porous structure for faster CO2 transport. Potassium from the residual mineral ash promotes the formation of low-melting carbonate phases, while the local oxygen-deficient environment generates oxygen vacancies that strengthen CO2 adsorption.

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Journal of Advanced Ceramics, Tsinghua University Press

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