Choong, Choe Earn Kim, Minhee Lim, Jun Sup Hong, Young June Lee, Geon Joon Chae, Keun Hwa Nah, In Wook Yoon, Yeomin Ha Choi, Eun Jang, Min 2024-01-19T08:00:10Z 2024-01-19T08:00:10Z 2024-01-04 2024-04 0926-3373 https://pubs.kist.re.kr/handle/201004/112931 Pseudo-photocatalysis driven by argon-plasma-system (AP) is a new approach toward the promotion of reactive species production for water remediation. Here, we investigated the synergistic effect between AP and catalyst by altering the oxygen vacancies (OV) concentration of CeO2/Bi2O3 for stimulating the hydrated electrons (eaq- ) production for PFOA removal. The soft X-ray total fluorescence yield (TFY) analysis and DFT calculation revealed the formation of the built-in electric field in the Bi/Ce0.43 interface can enhance interfacial electron migration with direction from Bi2O3 toward CeO2, simultaneously promoting the eaq- generation. Notably, AP-Bi/Ce0.43 (0.1488 min-1, EEO = 0.43 kW mg-1) exhibited excellent PFOA removal kinetic performance with almost 5.7 times faster and 72.6% lower energy consumption than sole AP (0.0261 min-1, EEO = 1.57 kW mg- 1), respectively. The multiple-plasma-jet continuous-flow-experiments results illustrated the scalability of AP-Bi/Ce0.43 for PFOA destruction. Our findings demonstrate fundamental insights into the synergistic effect of PFOA removal in AP catalysis. English Elsevier BV Understanding the synergistic effect of hydrated electron generation from argon plasma catalysis over Bi2O3/CeO2 for perfluorooctanoic acid dehalogenation: Mechanism and DFT study Article 10.1016/j.apcatb.2023.123403 1 Applied Catalysis B: Environment and Energy, v.343 Applied Catalysis B: Environment and Energy 343 N scie scopus 001127939300001 2-s2.0-85178327649 Chemistry, Physical Engineering, Environmental Engineering, Chemical Chemistry Engineering Article WATER CEO2 DECOMPOSITION NANOPARTICLES NANOSHEETS DEGRADATION Perfluorooctanoic acid Plasma -catalysis Hydrated electrons Reactive oxygen species Pseudo-photocatalysis