Table 4.

Size and shape of synthesized AgNPs by ultrasonic spray-pyrolysis (USP) method.

Particle Size of AgNPs (nm)	Nanoparticle Shape	Ref.
Size can be regulated	–	[123]
20–80	Spherical, Cylindrical	[124]
20–40	Spherical	[117]
Depending on the AgNO3 Concentration	Spherical Metallic	[125]
1–2	–	[126]
18.9–24.6	Spherical	[127]
40–80	–	[128]
95-94 (400 °C) 124–119 (600 °C) 328–79 (800 °C)	Solid Spherical, Nano-Convex	[129]
12–32	Spherical	[130]
200–300	Spherical	[131]