Bimetallic nanoparticles: Preparation, properties, and biomedical applications

Figures & data

Figure 1. Schematic picture showing the shape and composition progress of Ag/Ag–Au metal core/alloy shell BMNPs. The green and cyan planes signify the {111} and {100} forms of silver, respectively; the yellow and blue planes denote the {111} and {100} forms of gold–silver alloy and pure gold, respectively (Zhang et al. 2008).

Figure 2. Schematic design of preparative methods of metal NPs.

Figure 3. Synthesis of core/alloy shell NPs by the replacement reaction between Ag NPs and HAuCl₄. (Zhang et al. 2008).

Figure 4. Schematic picture of catalytic activity of Au, Ag, and Au–Ag BMNPs.

Figure 5. Microscopic image of cells stained using trypan blue after laser irradiation. (a) SAS cancer cells with no NPs, (b–c) cancer cells incubated with gold–silver (10:1 ratio) BMNPs (orange dotted). Squares signify the irradiation zone.

Zhang Q, Xie J, Lee JY, Zhang J, Boothroyd C. 2008. Synthesis of Ag@AgAu metal core/alloy shell bimetallic nanoparticles with tunable shell compositions by a galvanic replacement reaction. Small. 4:1067–1071.

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Zhang QB, Xie JP, Lee JY, Zhang, JX, Boothroyd C. 2008. Monodisperse icosahedral Ag, Au, and Pd nanoparticles: size control strategy and superlattice formation. Small. 4:1067–1071.

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