Abstract
Pt/CeO2/β-MnO2 catalyst with multiple interfaces (Pt and CeO2, Pt and MnO2, CeO2 and MnO2, and Pt sandwiched by CeO2 and MnO2) was developed by supporting nano-sized Pt on CeO2-loaded MnO2 for o-xylene degradation in a room-temperature operated plasma catalytic reactor. It was found that 100 % o-xylene conversion and 88 % CO2 selectivity can be achieved using Pt/CeO2/β-MnO2 catalyst. Characterization results revealed that the best performance of Pt/CeO2/β-MnO2 is due to the highest ratios of Ce3+/Cetotal, Pt0/Pttotal, and Oads/Ototal, while the lowest ratio of Mn3+/Mntotal. Pt and CeO2 on β-MnO2 have synergistic effect on the formation of Ce3+ and Pt0, which can promote the generation of oxygen vacancies and surface reactive oxygen species. The relationship between structure factors and reaction activities has been correlated, the Ce3+/Cetotal ratio can be used as the descriptor to reveal the plasma catalytic activity.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
