Table 2.

The chemical synthesis of AgNP.

Reaction	Results	References
Turkevich method: Reduction of silver nitrate with sodium citrate	The particles size of 14 nm with a mean diameter of 10 nm	[29]
Reduction of silver nitrate with a mixture of hydrazine hydrate and sodium citrate as reductants; sodium dodecyl sulfate as a stabilizer	Colloidal solution with the particles size range of 8 to 50 nm with a mean diameter of 24 nm	[30]
Reduction of silver nitrate with a mixture of two different reducing agents which are tannic acid and sodium nitrate	Combination of reducing agents able to produce monodisperse spherical silver nanoparticles in 5 to 140 nm	[31]
Reduction of silver nitrate by sodium borohydride in presences of sodium dodecyl sulfate as a stabilizer Ag+ + BH4 − + 3H2O → Ago + B(OH)3 + 3.5 H2	Formation of colloidal silver nanoparticles with particles diameter in a range from 30 to 40 nm	[32]
Reduction of silver nitrate with dextrose as reducing agent in presence of Na+-carrying poly[γ-glutamic acid] (PGA) 2Ag+ + 2OH− → Ag2O + H2O Ag2O + 4NH3 + H2O → 2[Ag(NH3)2]+ + 2OH	Formation of silver nanoparticles with an average size of 37.3 ± 5.5 nm for 0.5 wt% PGA-AgNP and 17.3 ± 3.4 nm for 2 wt% of PGA-AgNP	[33]
Reduction of silver nitrate with aniline in the presence of cetyltrimethylammonium bromide (CTAB) Ph-NH2 + Ag+ → Ph-NH2-Ag+ Ph-NH2-Ag+ → Anilino radical + Ago + H2O	Formation of spherical nanoparticles in size range from 10 to 30 nm and wide size distribution	[34]
Reduction of silver nitrate with trisodium citrate 4Ag+ + C6H5O7Na3 + 2H2O → 4Ago + C6H5O7H3 + 3Na+ + H+ + O2↑	Formation of silver nanoparticle with particle size range from 5 to 100 nm	[35]
Reduction of silver nitrate with two different reducing agents which are ethylene glycol (EG) and glucose in the presence of poly[N-vinylpyrolidone] (PVP) as a stabilizer 2AgNO3 + R-CHO + 2 NaOH → 2Ag + R-COOH + 2NaNO3 + H2O	Spherical silver nanoparticles with particle size range from 10 to 250 nm	[36]