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Controlling the Nucleation and Growth of Silver on Palladium Nanocubes by Manipulating the Reaction Kinetics


  • This work was supported in part by grants from the NSF (DMR, 0804088 and 1104616) and startup funds from Washington University in St. Louis. Y.X. was also partially supported by the World Class University (WCU) program through the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology (R32-20031). Part of the research was performed at the Nano Research Facility (NRF), a member of the National Nanotechnology Infrastructure Network (NNIN), which is funded by the NSF under award no. ECS-0335765. The work at BNL was supported by the U.S. Department of Energy, Basic Energy Sciences, by the Materials Sciences and Engineering Division under Contract No. DE-AC02-98CH10886 and through the use of CFN.


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Tell the atoms where to go: By manipulating the rate at which Ag atoms were generated from a precursor, the nucleation and growth of Ag on Pd nanocubes with six equivalent {100} facets were controlled to generate three different types of bimetallic nanocrystals: Pd–Ag hybrid dimers, Pd–Ag eccentric nanobars, and Pd@Ag core–shell nanocrystals (see scheme).