Ecofriendly Synthesis of Anisotropic Gold Nanoparticles: A Potential Candidate of SERS Studies

Figure 2

FTIR spectra of (1) pure Piper betle leaf broth and (2) Piper betle leaf-reduced gold nanoparticles in the wavenumbers range from (a) 400 to 4000 cm⁻¹ and (b) 1300 to 1750 cm⁻¹; (c) it shows aqueous extract of Piper betle leaf (1), Piper betle leaf-reduced gold nanoparticles (2), and Piper betle leaf (3).

(a)  

(b)

(c)