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Capturing local structure modulations of photoexcited BiVO4 by ultrafast transient XAFS

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Abstract

Ultrafast excitation of photocatalytically active BiVO4 was characterized by femto- and picosecond transient X-ray absorption fine structure spectroscopy. An initial photoexcited state (≪500 fs) changed to a metastable state accompanied by a structural change with a time constant of ∼14 ps. The structural change might stabilize holes on oxygen atoms since the interaction between Bi and O increases.

Graphical abstract: Capturing local structure modulations of photoexcited BiVO4 by ultrafast transient XAFS

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Publication details

The article was received on 23 Mar 2017, accepted on 02 May 2017 and first published on 02 May 2017


Article type: Communication
DOI: 10.1039/C7CC02201H
Citation: Chem. Commun., 2017, Advance Article
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    Capturing local structure modulations of photoexcited BiVO4 by ultrafast transient XAFS

    Y. Uemura, D. Kido, A. Koide, Y. Wakisaka, Y. Niwa, S. Nozawa, K. Ichiyanagi, R. Fukaya, S. Adachi, T. Katayama, T. Togashi, S. Owada, M. Yabashi, K. Hatada, A. Iwase, A. Kudo, S. Takakusagi, T. Yokoyama and K. Asakura, Chem. Commun., 2017, Advance Article , DOI: 10.1039/C7CC02201H

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