Research Article

Synthesis, Optimization, and Characterization of Ecofriendly Production of Gold Nanoparticles Using Lemon Peel Extract

Figure 7

The pictures show the color changes after the process of reduction of HAuCl4 to GNPs using different ratios of HAuCl4 solution to lemon peel extract (1 : 1, 1 : 2, and 2 : 1) before and after dilution with distilled water.