a Single fuel permeation in the 1-?m-thick g-C3N4 membrane at area temperature and 1??bar. The inset displays the gas selectivity for H2 in excess of other gases. b Permeance and separation components from the one-?m-thick g-C3N4 membranes during the equimolar mixed-gasoline permeation at place temperature and 1??bar. Inset demonstrates the kinetic