Journal of the American Chemical Society
Article
agent-activity dependence (Figure 4d). We prepared the
oleylamine-capped PtNi2 nanocrystals through a ligand
21131004). W.H. gratefully acknowledges the Tsinghua-Peking
Center for Life Sciences for generous financial support.
exchange process (Figure 2b) and a “cleaned” PtNi /C (10%
2
loading) catalyst (Figure S14 of the SI) (for details see SI). The
oleylamine-capped nanocrystals are much less active toward
hydrogenation of benzalacetone, while the PVP-capped nano-
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ACKNOWLEDGMENTS
■
This work was supported by the State Key Project of
Fundamental Research for Nanoscience and Nanotechnology
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dx.doi.org/10.1021/ja302606d | J. Am. Chem. Soc. 2012, 134, 8975−8981