Table 1: Phytogenic PtNPs and PdNPs.

Serial numberPlantExtract usedNPsShapeSize (nm)Reference

1Cacumen platycladiWhole biomassPtNPsSpherical2.4 ± 0.8[38]
2Anacardium occidentaleLeafPtNPsIrregular and rod shaped[39]
3Diospyros kakiLeafPtNPsSpheres and plates2–20[36]
4Ocimum sanctumLeafPtNPsIrregular23[42]
5Fumariae herbaWhole herbPtNPsHexagonal and pentagonal30[43]
6Curcuma longaTuberPdNPsSpherical15–20[44]
7Gardenia jasminoides EllisFruitPdNPsSpherical, rod, and three-dimensional polyhedra3–5[45]
8Glycine maxLeafPdNPsSpherical15[29]
9Punica granatumPeelPtNPsSpherical16–23[46]
10Cinnamomum camphoraLeafPdNPsIrregular6[30]
11Annona squamosa L.PeelPdNPsSpherical100[41]
12Pulicaria glutinosaWhole plantPdNPsSpherical20–25[46, 47]
13Delonix regiaLeafPdNPsSpherical2–4[48]
14Piper betle L.LeafPtNPsSpherical2.1 ± 0.4[40]
PdNPsSpherical3.8 ± 0.2
15Dioscorea bulbiferaTuberPtNPsSpherical2–5[8]
PdNPsSpherical and blunt ended cubes10–25
16Barleria prionitisLeafPtNPsSpherical1-2[14]
PdNPsSpherical and irregular5–7