BULLETIN OF THE
Article
Platinum Single Atoms on Carbon Nanotubes
KOREAN CHEMICAL SOCIETY
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Also, the charge compensation process for Pt-S-MWNTs
and Pt/MWNTs was checked to confirm the ligand effect of
the sulfur in the thiol groups through X-ray absorption near
edge structure (XANES) measurements, in which the oxi-
dized state was simulated by the positive potential applica-
tion with potentiostat (Figure 4(b) and (c)).22 The Pt-S-
MWNTs exhibited a much less degree of white line
increase than Pt/C because of a much higher oxidation tol-
erance of Pt-S-MWNTs. The origin of higher oxidation tol-
erance of Pt-S-MWNTs was attributed to a charge
compensation from sulfur which could rapidly provide the
electron, when Pt-S-MWNTs is oxidized.
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Conclusion
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In conclusion, we demonstrated that the Pt-S-MWNTs have
a remarkably high activity for the hydroalkoxylation. Pt-S-
MWNTs showed a high activity in comparison with con-
ventional catalysts; 3–7 times higher product yields than
Pt/MWNT, Pt complex, respectively. This high activity was
attributed to the effective activation of olefin in 4-penten-1-
ol compared with Pt/MWNTs. Hence, we firmly believe
that Pt-S-MWNTs catalyst can be applied to all catalytic
research field for organic reaction.
Acknowledgments. This work was supported by the
National Research Foundation (NRF) of Korea grant
(2015M1A2A2056556, 2015R1A2A1A10056156, 2013M-
1A8A1040703), Nano-Convergence Foundation (R20150-
0910), and Korea Institute of Energy Technology
Evaluation and Planning (KETEP) grant (2015303003-
1510).
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Bull. Korean Chem. Soc. 2017
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