[Retracted] Role of Surfactant in the Formation of Gold Nanoparticles in Aqueous Medium

Figure 3

Transmission electron microscope image of gold nanoparticles in 1 mM SDS solution formed by the reaction of 0.5 mM HAuCl₄ with (a) 0.5 mM Trp and (b) 1 mM Trp and that of 1 mM HAuCl₄ with (c) 0.5 mM Trp and (d) 1 mM Trp.

(a)

(b)

(c)

(d)