Table 1.

Metallic NPs synthesized using plant-extracts

Sr. No.	Plant Species	Utilized Plant-Part	Types of NPs	Size (nm)	Shape/Form	Ref.
1.	Citrus limon	Fruit-part	ZnO; TiO2	20–200	Polymorphous	[47]
2.	Phyllanthus emblica	Fruit-part	Ag	20–93	Spherical	[48]
3.	Rosmarinus officinalis	Floral-part	MgO	<20	Flower-shaped	[49]
4.	Matricaria chamomilla	Floral-part	MgO and MnO2	9–112	Disc-shaped, Spherical	[50]
5.	Matricaria chamomilla	Floral-part	ZnO	50–192	Crystal-form	[51]
6.	Olea europaea	Leaf-part	ZnO	41–124	Crystal-form	[51]
7.	Lycopersicon esculentum	Fruit-part	ZnO	66–133	Crystal-form	[51]
8.	Piper nigrum	Stem-part	Ag	9–30	Crystal-form	[52]
9.	Citrus maxima	Fruit-part	Ag	11–13	Sphere-shaped	[53]
10.	Artemisia absinthium	Leaf-part	Ag	5–100	Sphere-shaped	[54]
11.	Trachyspermum ammi	Leaf-part	Ni	68	Missing	[55]
12.	Abelmoschus esculentus	Seed-part	Au	45–75	Sphere-shaped	[56]
13.	Parthenium hysterophorus	Leaf-part	ZnO	28–84	Sphere-shaped and Hexagonal	[56]
14.	Syzygium aromaticum	Bud-part	Cu	15	Sphere shaped	[57]
15.	Piper cubeba	Seed-part	Ag	88	Spherical	[58]
16.	Nigella sativa	Leaf-part	Ag	15	Spherical	[59]
17.	Ixora coccinea	Leaf-part	CuO	80–110	Spherical	[60]
18.	Centella asiatica	–	CeO2	19	Spherical	[61]
19.	Curcuma Longa	–	Ag	5–35	Spherical	[62]
20.	Acalypha indica	Leaf-part	Ag, Au	20–30	Spherical	[63]
21.	Cotyledon orbiculata	Leaf-part	Ag	100–140	Spherical	[64]
22.	Cucumis prophetarum	Leaf-part	Ag	30–50	Ellipsoidal/irregular	[65]
23.	Senegalia senegal	–	Ag	1–30	Spherical	[66]
24.	Ocimum tenuiflorum	Leaf	Se	15–20	Spherical and monodispersed	[67]
25.	Asparagus racemosus	Root	Pt	1–6	Spherical	[68]
26.	Rosmarinus officinalis	Leaves	Pd	15–90	Semi-spherical	[69]
27.	Moringa oleifera	Seeds	Fe	2.6–6.2	Spherical	[70]
28.	Anogeissus latifolia	Commercial Powder	Pd	4.8	Spherical	[71]
29.	Cissus quadrangularis	Stem	Ag	24	Spherical	[72]
30.	Ziziphus Mauritiana	–	Ag	10–45	–	[73]