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TEM images of Ag nanoparticles obtained at t = 1 min (left column) and t = 30 min (right column) for the syntheses with different precursor combinations: (A, B) C3FCOOAg; (C, D) C3FCOOAg + NaHS; (E, F) C3FCOOAg + HCl; and (G, H) C3FCOOAg + NaHS + HCl, but under argon atmosphere. All other parameters were kept the same as the standard synthesis.
