Biosynthesis approach of zinc oxide nanoparticles for aqueous phosphorous removal: physicochemical properties and antibacterial activities

Table 2 Comparison between the particles size of ZnO NPs prepared from onion extract and some other plants

No	Plant source	Part extracted	Resource of ZnO	Size	References
1	C. sinensis	Peel	Zinc nitrate	22.6 nm	[57]
2	Moringa oleifera	Leaves/seeds	Zinc acetate dihydrate	10.8–13.2 nm	[58]
3	Coriandrum sativum	Leaves	Zinc acetate dihydrate	9–18 nm	[59]
4	Ferulago angulata	–	Zinc acetate dihydrate	32–36 nm	[60]
5	Coriandrum sativum	Leaves	Zinc acetate	24 nm	[61]
6	Cyanometra ramiflora	Leaves	Zinc acetate	13 nm	[41]
7	Oak	Fruit hull	Zinc acetate dihydrate	34 nm	[62]
8	Garcinia mangostana	Fruit	Zinc nitrate hexahydrate	21 nm	[63]
9	Mussaenda frondosa	Leaves/stem	Zinc acetate dihydrate	5–20 nm	[64]
10	Vitex trifolia L	Leaves	Zinc nitrate hexahydrate	28 nm	[65]
11	Sambucus ebulus	Leaves	Zinc acetate dihydrate	17 nm	[66]
12	Tabernaemontana divaricata	Green Leaves	Zinc nitrate	20–50 nm	[67]
13	Dolichos lablab L	Leaves	Zinc acetate dihydrate	_29 nm	[68]
14	Carica papaya	Latex	Zinc nitrate	11–26 nm	[69]
15	Betel	Leaves	Zinc acetate	50 nm	[70]
16	Azadirachta indica	Leaves	Zinc nitrate	9–38	[70]
17	Cannabis sativa	Leaves	Zinc acetate	38 nm	[71]
18	Sea buckthorn	Fruit	Zinc nitrate hexahydrate	_17.15 nm	[72]
19	Chlorella	–	Zinc nitrate	20 ± 2.2 nm	[73]
20	Onion extract	Fruit	Zinc sulfate	2.06–15.3 nm	This study

ISSN: 2661-801X