Green Approaches, Potentials, and Applications of Zinc Oxide Nanoparticles in Surface Coatings and Films

Table 1

Biological materials used for ZnO NP synthesis via different synthesis methods.

Green materials	Size of NPs (nm)	Shape of ZnO NPs	Method of synthesis	Zinc precursor	Ref
Chitosan	15 (width) and 110	Nanorods	Chemical conversion	Zinc sulfate pentahydrate	[5]
Essential oil of eucalyptus globulus	40	Irregular needle and spherical	Biosynthesis	Zinc acetate dihydrate	[29]
Chamomile flower, olive leave, and red tomato	49.8–191.0; 40.5–124.0; 65.6–133.0	Pure crystalline or cubic	Biosynthesis	Zinc oxide	[16]
Palm olein	20–500	Nanoflower	Hydrothermal	Zinc acetate	[30]
Orange oil	20	Hexagonal and polyhedral	Precipitation	Zinc nitrate	[31]
V. arctostaphylos L.(Caucasian whortleberry)	12	Nearly spherical	Microwave-assisted green synthesis	Zinc nitrate	[32]
Citrus maxima (pomelo) juice	10–20	Nearly spherical	Solution combustion	Zinc nitrate	[33]