Figure 2

SEM images of the products synthesized via the thermal condensation of melamine at different temperatures for 2 h.
(a) 300°C, (b) 400°C, (c) 500°C, (d) 600°C.
SEM images of the products synthesized via the thermal condensation of melamine at different temperatures for 2 h.
(a) 300°C, (b) 400°C, (c) 500°C, (d) 600°C.