Fig. 2. Surface response graphs illustrating the dependence of Cu NPs absorbance (a) /SPR (b) on extract volume-(AcO)2Cu concentration, Pareto plot viewing effects of terms on Cu NPs absorbance (c) /SPR (d), and optimization plot illustrating optimal values: extract volume (e) and (AcO)2Cu concentration (f) for nanoparticle formation.
