Phytosynthesis of Silver and Gold Nanoparticles Using the Hot Water Extract of Mixed Woodchip Powder and Their Antibacterial Efficacy

Figure 5

Effect of reaction pH on the phytosynthesis of AuNPs after reaction for 24 h (a), 48 h (b), and 72 h (c). Effect of pH values on the blue shift of the SPR band depicted by average values (inset (c)). Reaction curve demonstrating the evolution of the SPR band at as a function of time (d).

(a)

(b)

(c)

(d)