Figure 7From: Eco-friendly synthesis and antimicrobial activities of some 1-phenyl-3(5-bromothiophen-2-yl)-5-(substituted phenyl)-2-pyrazolines SEM images of pure fly ash and fly ash:H2SO4. (a) Pure fly ash (1 μm), (b) pure fly ash (50 μm), (c) fly ash:H2SO4 (1 μm) (red bold arrow, corroded), and (d) fly ash:H2SO4 (50 μm) (red bold arrow, corroded).Back to article page