Figure 2From: Catechin-capped gold nanoparticles: green synthesis, characterization, and catalytic activity toward 4-nitrophenol reductionHR-TEM images of freshly green-synthesized AuNPs. The scale bar represents (A) 100 nm, (B) 20 nm, (C) 5 nm, (D) 100 nm, (E) 20 nm, and (F) 5 nm.Back to article page