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Green Chemistry
Page 5 of 6
DOI: 10.1039/C7GC03020G
Journal Name
COMMUNICATION
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Conclusions
In summary, we have fabricated Cu2O truncated concave
octahedral nanocrystals enclosed by twenty-four {511} high-
index facets, twelve {110}, and six {100} facets through a
system of O/W emulsion. In this synthesis system, both oleic
acid and solution pH are crucial for the formation of Cu2O
truncated concave octahedra. The morphologies of Cu2O
nanocrystals could be controlled by adjusting solution pH.
With the increase of solution pH, morphologies of Cu2O
evolved from rhombic dodecahedra, to truncated concave
octahedra, and cubes. In azide-alkyne cycloaddition, Cu2O
truncated concave octahedra showed much enhanced activity,
when compared to Cu2O rhombic dodecahedra with (110)
facets and cubes with (100) facets. The enhancement in
activity could be attributed to the low-coordinated Cu atoms
on (511) surface of Cu2O, as well as higher positively charged
(511) surface relative to (110) and (100) surfaces. In recycle
experiment, Cu2O truncated concave octahedra also displayed
good catalytic and structural stability. The high activity and
good recyclability of Cu2O truncated concave octahedra
demonstrated the green feature of this work. All these results
demonstrate an effective pathway to the development of
heterogeneous catalysts for CuAAC by controlling surface
structure.
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Res., 2013, 46, 1867-1877.
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Science, 2007, 316, 732-735.
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Chem. Res., 2014, 47, 308-318.
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25 Z.-Y. Jiang, Q. Kuang, Z.-X. Xie and L.-S. Zheng, Adv.
Funct. Mater., 2010, 20, 3634-3645.
26 C.-H. Kuo and M. H. Huang, Nano Today, 2010, 5, 106-
Conflicts of interest
116.
27 Y. Shang and L. Guo, Adv. Sci., 2015,
There are no conflicts to declare.
2, 1500140.
28 M. Leng, M. Liu, Y. Zhang, Z. Wang, C. Yu, X. Yang, H.
Zhang and C. Wang J. Am. Chem. Soc., 2010, 132
17084-17087.
,
Acknowledgements
29 S. Sun, C. Kong, S. Yang, L. Wang, X. Song, B. Ding and Z.
Yang, CrystEngComm, 2011, 13, 2217-2221.
30 X. Wang, C. Liu, B. Zheng, Y. Jiang, L. Zhang, Z. Xie and
L. Zheng, J. Mater. Chem. A, 2013, 1, 282-287.
31 X. Wang, S. Jiao, D. Wu, Q. Li, J. Zhou, K. Jiang and D.
This work was supported by National Natural Science
Foundation of China (grant no. 21522309 and 21703264) and
Natural Science Foundation of Jiangsu Province (BK20160395).
We also gratefully thank the Key Research Program of Frontier
Sciences of Chinese Academy of Sciences (QYZDJ-SSWSLH051).
Xu, CrystEngComm, 2013, 15, 1849-1852.
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