Fig. 3: FESEM micrographs.

FESEM images of BCFH-SBA-15 (length of scale bars: first row, left = 10 μm; first row, right = 2 μm ; second row, left = 1 μm; second row, right = 200 nm).
FESEM images of BCFH-SBA-15 (length of scale bars: first row, left = 10 μm; first row, right = 2 μm ; second row, left = 1 μm; second row, right = 200 nm).