Figure 7
Average distribution of petal lengths for the CuO caltrop particles as measured from ∼60–120 petals in each micrograph. The ratio of ethanol to an aqueous solution of Cu(CH3COO)2 used to synthesize the particles was (a) 1/3000, (b) 1/2000, (c) 1/200, (d) 1/20 and (e) 1/2. The micrographs used for measurements are shown in Figs. 2 and 5. The petal length is shown in the inset of (c). (f) The average particle size as a function of the fraction of ethanol. |