Facile Synthesis of Five-fold Twinned, Starfish-like Rhodium Nanocrystals by Eliminating Oxidative Etching with a Chloride-Free Precursor


  • This work was supported in part by a DOE subcontract from the University of Delaware (DE-FG02-03 ER15468) and startup funds from Washington University in St. Louis. As a visiting scholar from Zhejiang University, H.Z. was also partially supported by the “New Star Program” of Zhejiang University. Part of the work was performed at the Nano Research Facility (NRF), a member of the National Nanotechnology Infrastructure Network (NNIN), which is supported by the NSF under award ECS-0335765.


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Five-fold twinned, starfish-like Rh nanocrystals consisting of five arms (see TEM) have been synthesized in high yields with the use of [{(CF3COO)2Rh}2] as a precursor to completely eliminate oxidative etching from this system. The as-prepared Rh nanocrystals were shown with great performance as a substrate for SERS.