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Issue 20, 2011
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Photoinjection of hydrogen and the nature of a giant shift of the fundamental absorption edge in highly disordered V2O5 films

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Abstract

Production of atomic photochemical hydrogen under the action of light and its subsequent injection into transition metal oxides has yielded numerous interesting results. Here we report on the mechanism of the photo-induced hydrogen transfer between adsorbed organic molecules and the surface of highly disordered V2O5 films. We have managed to carry out the photoinjection of hydrogen into the V2O5 films at very low temperatures, which is very important both for investigations of the reaction mechanism and for the optical properties of the V2O5 films. The photochemical reaction exhibits all features of proton-coupled electron transfer which is a basic mechanism for bioenergetics conversion. Second, the new possibility to carry out experiments at very low temperatures has yielded a new approach in investigations of the nature of color centers and of the giant “blue” shift of the fundamental absorption edge in the V2O5 films both arising due to injection of hydrogen atoms.

Graphical abstract: Photoinjection of hydrogen and the nature of a giant shift of the fundamental absorption edge in highly disordered V2O5 films

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Publication details

The article was received on 19 Oct 2010, accepted on 10 Mar 2011 and first published on 12 Apr 2011


Article type: Paper
DOI: 10.1039/C0CP02201B
Phys. Chem. Chem. Phys., 2011,13, 9490-9497

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    Photoinjection of hydrogen and the nature of a giant shift of the fundamental absorption edge in highly disordered V2O5 films

    A. Gavrilyuk, U. Tritthart and W. Gey, Phys. Chem. Chem. Phys., 2011, 13, 9490
    DOI: 10.1039/C0CP02201B

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