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SEM results for (a–c) monometallic (Au, Pt and Ag) and (d–f) bimetallic (Pt-Ag, Pt-Au, Au-Ag) systems from water solutions: (a) H[AuCl4]·nH2O; (b) Pt(NH3)4(OH)2·xH2O; (c) C7H5AgO2; (d) H[AuCl4]·nH2O + Pt(NH3)4(OH)2·xH2O; (e) H[AuCl4]·nH2O + C7H5AgO2; (f) C7H5AgO2 + Pt(NH3)4(OH)2·xH2O.
