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Dependence of the Surface Chemistry of Cu-oxide Nanoparticles on the Particle Size and Shape
New Physics: Sae Mulli 2017; 67: 903~908
Published online August 31, 2017;
© 2017 New Physics: Sae Mulli.

Jiwoong KIM1, Sungkyun PARK*1, Hyunje WOO2, Kang Hyun PARK†2, Jong-Seong BAE3

1 Department of Physics, Pusan National University, Busan 46241, Korea
2 Department of Chemistry, Pusan National University, Busan 46241, Korea
3 Busan Center, Korea Basic Science Institute, Busan 46742, Korea
Correspondence to: *, †
Received June 16, 2017; Revised July 17, 2017; Accepted July 17, 2017.
cc This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
We investigated the catalytic activity of Cu-oxide nanoparticles of various particle sizes and shapes synthesized by using a one-pot polyol process. Cu-oxide nanoparticles formed at a high reaction temperature (240 $^\circ$C) had spherical shapes while those formed at relatively low reaction temperatures (200 $^\circ$C and 220 $^\circ$C) had cubic shapes. The crystal structure determined from X-ray diffraction measurements was metallic Cu for Cu nano-spheres and Cu$_2$O for Cu nano-cubes. However, X-ray photoelectron spectroscopy confirmed that all Cu-oxide nanoparticles were covered with CuO. Cu-oxide nanoparticles with crystalized CuO on the surface showed enhanced catalytic activity.
PACS numbers: 61.05.cp, 61.82.Rx, 68.37.Lp
Keywords: Cu-oxide nanoparticle, Catalyst, Surface crystallization
February 2019, 69 (2)
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