Optimization of Milling Procedures for Synthesizing Nano-CaCO₃ from Achatina fulica Shell through Mechanochemical Techniques

Figure 6

TEM micrograph showing the dispersion of nano-CaCO₃ obtained from (a) ethanol- (E-), (b) ethylene glycol- (ED-), (c) methanol- (M-), and (d) water- (W-) milled snail shell powder mixture.

(a)

(b)

(c)

(d)