Table 3.

SPR bands, and functional groups, characterization techniques of biosynthesized CuONPs from some plant sources.

S/N	Plants name	Plants parts	SPR peak (nm)	Functional group prediction		Techniques for Morphological Assessment	Shape	Size	Ref.
1	Eupatorium odoratum	Leaf	301	3976	O–H	UV, FTIR, XRD, TEM	spherical	-	[115]
				2936	C–H
				1618	C=O
2	Acanthospermum hispidum	Leaf	305	3406	O–H	UV, FTIR, XRD, TEM	spherical	-	[115]
				2838	C–H
				1520	C=C
3	Hylotelephium telephium	Flower	350	3388	O–H	UV, FTIR, SEM, TEM, XRD,EDX	spherical	83	[116]
				1980	C=O
4	Kalopanax pictus	Leaf	368	3,467	N–H	UV, FTIR, SEM, TEM, EDX, XPS	spherical	26–67	[117]
				1,584	C=C
				1,360	C–N
5	Pterolobium hexapetalum	Leaf	274	3420	O–H	XUV, FTIR, RD, TEM, and EDX	spherical	10–50	[118]
				2915	C–H
				1625	C=C
6	Coriandrum sativum L	Seed	-	-	-	XRD,FESEM,DLS	Irregular	18.2	[119]
7	Oak	Fruit	-	3415	O–H	UV,FTIR, FESEM,XRD	quasi-cubic	34	[120]
				1654	C=O
8	Albizia lebbeck	Leaf	413			SEM, EDS, UV,XRD, TEM	spherical	100	[121]
9	Eichhornia crassipes	Leaf	310	3314	O–H	UV, FTIR, FESEM, TEM, EDX	spherical	15–30	[122]
				1624	N–H
				1217	C–O–C
10	Citrofortunella microcarpa	Leaf	305	3000–3350		UV, FTIR, XRD, SEM and FTIR. EDS	spherical	54–68	[123]
				820–880	C–H
				1357	C=O
11	Verbascum thapsus	Leaf	350	3442	O–H	UV, FTIR, XRD, SEM, FTIR	spherical	-	[124]
				2922	C–H
				1616	C=O
12	Euphorbia pulcherrima	Flower	240	3384	O–H	FTIR, XRD, HRTEM	cubic	19.2	[25]
				1595	C=O
13	Sida Rhombifolia	Leaf	471	3439		UV, FTIR, XRD, FESEM	spherical	10	[125]
				1658
14	Seidlitzia rosmarinus	Bark ashes	385	3346	O–H	UV, FTIR, XRD, FESEM		26	[126]
				2900	C–H
				1500	C=O
15	Enicostemma axillare (Lam.)	Leaf	264	-	-	UV, XRD, EDS, SEM, TEM		30	[69]
16	Terminalia catappa L.	Leaf	372	3209	O–H	UV, XRD, FTIR, SEM, TEM	spherical	103–29	[127]
				2920	C–H
				1557	C=O
17	Punica granatum	Fruits Peel	282	3379	O–H	UV, XRD, FTIR, SEM	spherical	10–100	[128]
				1577	C=O
18	O. cochinchinense	Leaf		3323	O–H	UV, XRD, FTIR, SEM,SEAD	-	-	[129]
				1550	C=C
				1338	C–N
19	Rosa canina	Fruit	262	3550–3200	O–H	UV, XRD, FTIR, FESEM, WDX, EDX, TEM	spherical	15–25	[130]
				1670	C=O
				1405	C=C
20	Aloe barbadensis	Leaf	285	3405	O–H	UV–Vis, PL, FT-IR, XRD, SEM, TEM	spherical	15–30	[131]
				1538	C=C
				944	C–C
21	Sambucus nigra	Fruit	278	3300–3500	O–H	UV, XRD, FTIR,	-	-	[132]
				2299	C–H
				1621	C=C
22	Calotropis procera	Leaf	355	3414	O–H	UV, XRD, FTIR,SEM	cylindrical	46	[133]
				2923	C–H
				1598	C=C

X-ray photo electron spectroscopy XPS, Selected Area Electron Diffraction (SAED) wavelength-dispersive X-ray spectroscopy (WDX).