Fig. 4From: Green Approach for the Effective Reduction of Graphene Oxide Using Salvadora persica L. Root (Miswak) ExtractFT-IR spectra of graphene oxide (GRO, blue line), root extract-mediated highly reduced graphene oxide (SP-HRG, green line), and chemically reduced graphene oxide (CRG, red line) prepared with hydrazine hydrate and the pure root extract (SP, purple line)Back to article page