Operando double-edge high-resolution X-ray absorption spectroscopy study of BiVO4 photoanodes

Autor:	Alberto Piccioni, Jagadesh Kopula Kesavan, Lucia Amidani, Raffaello Mazzaro, Serena Berardi, Stefano Caramori, Luca Pasquini, Federico Boscherini
Jazyk:	angličtina
Rok vydání:	2024
Předmět:	x-ray absorption spectroscopy photoelectrochemistry photoanodes resonant inelastic x-ray scattering Nuclear and particle physics. Atomic energy. Radioactivity QC770-798 Crystallography QD901-999
Zdroj:	Journal of Synchrotron Radiation, Vol 31, Iss 3, Pp 464-468 (2024)
Druh dokumentu:	article
ISSN:	1600-5775 16005775
DOI:	10.1107/S1600577524002741
Popis:	High energy resolution fluorescence detected X-ray absorption spectroscopy is a powerful method for probing the electronic structure of functional materials. The X-ray penetration depth and photon-in/photon-out nature of the method allow operando experiments to be performed, in particular in electrochemical cells. Here, operando high-resolution X-ray absorption measurements of a BiVO4 photoanode are reported, simultaneously probing the local electronic states of both cations. Small but significant variations of the spectral lineshapes induced by the applied potential were observed and an explanation in terms of the occupation of electronic states at or near the band edges is proposed.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/3ac1a78a3e94496e91c3e2801b3f9329 Zobrazit plný text záznamu View record in DOAJ Plný text ve formátu PDF