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Table 2 Particle size and morphology of bio-CaCO3

From: Effect of eggshell/N,N-dimethylformamide (DMF) mixing ratios on the sonochemical production of CaCO3 nanoparticles

Sample

Particle size range (nm)

Morpholgy

ES-1

5–20

Irregular-shaped platelets

ES-2

5–30

Irregular-shaped platelets

ES-3

10–4 × 104

Irregular -shaped platelets

ES-4

10–7 × 104

Blend of irregular and few rectangular platelets

ES-5

15–105

Blend of irregular and rectangular platelets

ES-6

20–105

Predominantly rectangular platelets