Photoassisted Synthesis of Silver Nanoparticles Using Riceberry Rice Extract and Their Antibacterial Application

Figure 4

Effect of volume ratios of AgNO₃ to RB extract: A 3 : 1, B 1 : 1, C 1 : 3, D 1 : 5, E 1 : 7, and F 1 : 10 (pH 2.5, 30 min irradiation) on the characteristics of AgNPs: (a) UV–vis spectra, (b) the color of AgNPs dispersed in solution, (c) SEM images, and (d) particle size distribution.

(a)

(b)

(c)

(d)