an individual fuel permeation in the 1-?m-thick g-C3N4 membrane at room temperature and 1??bar. The inset displays the gasoline selectivity for H2 above other gases. b Permeance and separation elements of your 1-?m-thick g-C3N4 membranes from the equimolar mixed-gas permeation at home temperature and one??bar. Inset shows the kinetic diameters of v