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- In relation to this article, we declare that there is no conflict of interest.
- Publication history
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Received March 18, 2023
Revised June 16, 2023
Accepted June 22, 2023
- Acknowledgements
- This research was funded by the National Research Foundation of Korea (NRF) under grants listed as NRF-2021R1A5A6002853 and 2020R1A2C1003885. This work was also supported by the Korea Institute for Advancement of Technology (KIAT) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. P0017363).
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Synthesis of stabilizer-free small PdAg alloy nanoparticles supported on carbon using a continuous Couette-Taylor reactor with enhanced electrochemical activity toward ethanol oxidation reaction
1Department of Chemical Engineering, Integrated Engineering Major, College of Engineering, Kyung Hee University, Yongin 17104, Korea 2Department of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Korea
wskim@khu.ac.kr, tkyu@khu.ac.kr
Korean Journal of Chemical Engineering, September 2023, 40(9), 2159-2164(6), 10.1007/s11814-023-1522-z
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Abstract
An organic surfactant/stabilizer plays a critical role in synthesizing small and well-dispersed nanoparticles
with large catalytic surface areas. However, a stabilizer typically interferes with the catalytic reaction by forming organic
layers on the surface of nanoparticles. Here, we report that the role of a stabilizer can be replaced by the periodic and
uniform fluid shear of Taylor vortex flow. Small, well-dispersed PdAg alloy nanoparticles on carbon were synthesized in
the continuous Couette-Taylor (CT) reactor in the absence of a stabilizer. The synthesized PdAg nanoparticles
(Pd64Ag36/C) showed two times higher mass activity than commercial Pd/C and good stability (retained 33% after
3,600 s) toward the electrochemical ethanol oxidation reaction due to their clean surface and alloy structure.
Keywords
References
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