We have developed a room-temperature borohydride co-reduction of metal salt solutions to synthesize bulk-immiscible Au-Rh, Au-Pt, Pt-Rh, and Pd-Rh alloy nanoparticles. The compositions of the alloy nanoparticles can be tuned across the entire solid solution range, including the bulk miscibility gaps, by varying the metal salt precursor ratios. The non-equilibrium alloy nanoparticles can be synthesized in the presence of catalytically-relevant carbon and biological supports in order to nucleate the particles on these supports.

Synthesis of bulk-immiscible alloy nanoparticles via an aqueous room-temperature method

244th National Meeting (2012)

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