1. Ultrafast Dynamics of Plasmon-Mediated Charge Transfer in Ag@CeO2 Studied by Free Electron Laser Time-Resolved X-ray Absorption Spectroscopy
- Author
-
Federico Boscherini, Sergio D'Addato, Claudio Masciovecchio, Patrick O'Keeffe, Laura Foglia, Paola Luches, Jagadesh Kopula Kesavan, Stefano Nannarone, G. Kurdi, Daniele Catone, Stefano Turchini, Eleonora Spurio, Ivaylo Nikolov, Giovanni De Ninno, Avinash Vikatakavi, Emiliano Principi, R. Mincigrucci, Stefania Benedetti, Jacopo Stefano Pelli Cresi, Cresi J.S.P., Principi E., Spurio E., Catone D., O'Keeffe P., Turchini S., Benedetti S., Vikatakavi A., D'Addato S., Mincigrucci R., Foglia L., Kurdi G., Nikolov I.P., de Ninno G., Masciovecchio C., Nannarone S., Kesavan J.K., Boscherini F., and Luches P.
- Subjects
CeO ,time-resolved XAS ,Materials science ,Bioengineering ,02 engineering and technology ,CeO2 ,FEL ,plasmonic nanoparticles ,ultrafast charge transfer ,General Materials Science ,Solar photocatalysis ,Plasmon ,X-ray absorption spectroscopy ,Plasmonic nanoparticles ,business.industry ,Plasmonic nanoparticle ,Mechanical Engineering ,Wide-bandgap semiconductor ,Free-electron laser ,Charge (physics) ,General Chemistry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Optoelectronics ,0210 nano-technology ,business ,Ultrashort pulse - Abstract
Expanding the activity of wide bandgap semiconductors from the UV into the visible range has become a central goal for their application in green solar photocatalysis. The hybrid plasmonic/semiconductor system, based on silver nanoparticles (Ag NPs) embedded in a film of CeO2, is an example of a functional material developed with this aim. In this work, we take advantage of the chemical sensitivity of free electron laser (FEL) time-resolved soft X-ray absorption spectroscopy (TRXAS) to investigate the electron transfer process from the Ag NPs to the CeO2 film generated by the NPs plasmonic resonance photoexcitation. Ultrafast changes (
- Published
- 2021
- Full Text
- View/download PDF