Fig. 5

FE-SEM micrographs of (a) g-C3N4, (b) g-C3N4-(CH2)3-SO3H, (c) g-C3N4-CO-(CH2)3-CO2H and (d) N2 sorption isotherm of pristine and functionalized g-C3N4.

FE-SEM micrographs of (a) g-C3N4, (b) g-C3N4-(CH2)3-SO3H, (c) g-C3N4-CO-(CH2)3-CO2H and (d) N2 sorption isotherm of pristine and functionalized g-C3N4.