Fig. 2

Morphological and elemental mapping analysis of TDA-Trz-POP. (A) High-resolution transmission electron microscopy (HRTEM) image showing an amorphous, nanoscale morphology with loosely aggregated porous domains; (B) Field emission scanning electron microscopy (FESEM) image revealing a rough, sponge-like surface topology, indicative of a high surface area and interconnected pore network; (C-F) Elemental mapping performed via energy-dispersive X-ray spectroscopy (EDS) showing dispersion of C, N and S (D-F) respectively.