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
- Authors
- Jiang, P.[Jiang, Pengfei]; Hyun, J.[Hyun, Jiyu]; Park, H.S.[Park, Hyun Su]; Bhang, S.H.[Bhang, Suk Ho]; Kim, W.-S.[Kim, Woo-Sik]; Yu, T.[Yu, Taekyung]
- Issue Date
- 25-Jul-2023
- Publisher
- Springer
- Keywords
- Catalysts; Couette-Taylor Reactor; Ethanol Oxidation Reaction; PdAg Alloy Nanoparticles; Taylor Vortex Flow
- Citation
- Korean Journal of Chemical Engineering, v.40, no.9, pp.2159 - 2164
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- Korean Journal of Chemical Engineering
- Volume
- 40
- Number
- 9
- Start Page
- 2159
- End Page
- 2164
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/107409
- DOI
- 10.1007/s11814-023-1522-z
- ISSN
- 0256-1115
- 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. © 2023, The Korean Institute of Chemical Engineers.
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