Journal
SCIENCE
Volume 358, Issue 6369, Pages 1427-1430Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aao6538
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Funding
- NSF [CBET 1160023, IIP 1464630]
- NSF [CBET 1160023, IIP 1464630]
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Supported nanoparticles containing more than one metal have a variety of applications in sensing, catalysis, and biomedicine. Common synthesis techniques for this type of material often result in large, unalloyed nanoparticles that lack the interactions between the two metals that give the particles their desired characteristics. We demonstrate a relatively simple, effective, generalizable method to produce highly dispersed, well-alloyed bimetallic nanoparticles. Ten permutations of noble and base metals (platinum, palladium, copper, nickel, and cobalt) were synthesized with average particle sizes from 0.9 to 1.4 nanometers, with tight size distributions. High-resolution imaging and x-ray analysis confirmed the homogeneity of alloying in these ultrasmall nanoparticles.
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