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Table 1 Compositions obtained by ICP-AES for the analysis of Fe3O4, Gd:Fe3O4, Au-seeded functionalized Gd:Fe3O4, and gold-silver alloy nanoshells on gold-seeded amine-functionalized Gd:Fe3O4

From: Gold-silver alloy nanoshells: a new candidate for nanotherapeutics and diagnostics

Sample Gd ppm Fe ppm Au ppm Ag ppm Gd:Fe Au:Ag
Fe3O4 0 70.1 0 0 - -
Gd: Fe3O4 11.6 57.7 0 0 0.2 -
Au-seeded Gd: Fe3O4 12.2 62.6 1 0 0.2 -
Au-Ag alloy = 1:1 nanoshells on Au-seeded amine-functionalized Gd: Fe3O4 7.0 40.4 6.8 19.5 0.2 0.4
Au-Ag alloy = 5:1 nanoshells on Au-seeded amine-functionalized Gd: Fe3O4 7.7 67.6 24.0 4.5 0.1 5.3