STEM Tomography and Surface Plasmon Imaging of a Au-Pd Bi-metallic Nanorod with Exotic Morphology
نویسندگان
چکیده
Utilizing surface enhanced Raman spectroscopy (SERS) to in situ monitor a catalytic reaction requires a bi-functional platform which is both catalytically and plasmonically active. In this study, we developed a novel bimetallic nanostructure, featuring Au-Pd alloy horns selectively grown on the end of Au nanorods (AuNR@AuPd), and employed electron tomography and electron energy loss spectroscopy (EELS) to visualize its 3-D morphology as well as the distribution of its surface plasmon. The results well explain the observed high catalytic activity and SERS sensitivity of this new material [1].
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