Nano Letters
Letter
phenyl-1-propanol were produced. On the Pt−Cu S HNCs,
AUTHOR INFORMATION
2
■
*
however, 3-phenyl-1-propanol was the only product (Figure
Author Contributions
4
B−D). Considering the fact that Pt is the main active
component and chemoselective for the reduction of carbonyl
group, the electronic structure of Pt probably affected the
selectivity of Pt−Cu S HNCs. As shown in the XPS data
The manuscript was written through contributions of all
authors. All authors have given approval to the final version of
the manuscript.
2
(
Supporting Information Figure S2), the Pt 4f peak and 4f
7/2 5/2
peak in the CuPt NCs and CuPt−Cu S HNCs were both
2
observed at 70.9 and 74.2 eV, respectively. However, the
Notes
corresponding two peaks for Pt−Cu S HNCs were both shifted
2
The authors declare no competing financial interest.
to a higher level (71.6 and 74.9 eV, respectively). This result
indicates that more electrons were transferred to Cu S from Pt,
2
ACKNOWLEDGMENTS
■
which probably induced the hydrogenation of olefinic group,
44
This work was supported by MOST of China (2014CB932700
and 2011CB921403), NSFC under Grant Nos. 21203173,
1371164, and J1030412, Strategic Priority Research Program
B of the CAS under Grant No. XDB01020000, and
Fundamental Research Funds for the Central Universities
WK2340000050 and WK2060190025).
and thus favored the generation of 3-phenyl-1-propanol.
Besides electron transfer, the steric effect of the small Pt
5
nanocrystals might be also responsible for the formation of 3-
4
5
phenyl-1-propanol. Different from Pt−Cu S HNCs, both
2
CuPt nanocubes and CuPt−Cu S HNCs possess the synergistic
function of Cu and Pt, which might be the leading cause for the
2
(
selective hydrogenation of olefinic group. Moreover, the higher
selectivity of CuPt−Cu S HNCs toward hydrocinnamaldehyde
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ASSOCIATED CONTENT
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(
*
S
Supporting Information
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E
dx.doi.org/10.1021/nl503343n | Nano Lett. XXXX, XXX, XXX−XXX