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Article History

Accepted: 21 January 2025

First Online: 15 February 2025

Declarations

:

: SEM image of ZIF-8 (Fig. ), N₂ adsorption-desorption isotherm of MC and pore size distribution of MC@NZn (Fig. S2), CO2, N2 adsorption isotherm of MC@NZ4 at 0–50 bar and 298 K (Fig. S3), CH₄ adsorption isotherms of MC@NZ4 at 0-100 bar and temperature of 275 K and 325 K (Fig. S4) and calculation methods for CH4 isosteric adsorption heat (Qst) and CH4/N2 selectivity.

: The authors declare no competing interests.