a Single fuel permeation in the 1-?m-thick g-C3N4 membrane at room temperature and 1??bar. The inset exhibits the gas selectivity for H2 about other gases. b Permeance and separation variables with the one-?m-thick g-C3N4 membranes from the equimolar combined-gas permeation at room temperature and one??bar. Inset exhibits the kinetic diameters of v… Read More