Table 2 Particle sizes and shapes comparison among different plant extracts used in green biofabrication of Cu NPs

Tilia

4.7–17

Spherical & cubic

[27]

Euphorbia nivulia stem latex

5–10

Spherical

[68, 69]

Datura innoxia aqueous leaves

5–15

Spherical

[70]

Syzygium aromaticum “Clove”

5- 40

Spherical & granular

[71]

Plantago asiatica leaf

7–35

Spherical

[72]

Syzygium aromaticum bud

12

Spherical

[73]

Triumfettarotundifolia

12.46

Like triangle

[74]

Quinoa seeds

15.1 ± 8.3

Cubic

Current study

Calotropis procera latex

15 ± 1.7

Spherical

[75]

Ginkgo biloba L. leaf

15–20

Spherical

[76]

Punica granatum peel

15–20

Spherical

[77]

Guava

15–30

Flakes

[78]

Phyllanthus embilica “Gooseberry”

15–30

Flake

[79]

Citrus grandis peel

22–27

Spherical

[80]

Pineapple

30–50

Cubic

[81]

Cassia Auriculata leaf

38.1–43.5

Spherical

[82]

Aloe vera flower

40

Spherical

[83]

Arevalanata leaves

40–100

Spherical

[84]

Lemon fruit

45

Cubic & rod

[85]

Magnolia Kobus leaf

45–110

Spherical

[86]

Azadirachta indica leaf

48

Cubic

[87]

Licorice

50.25 ± 9.20

Cubic

[33]