Bridging Hydroxyls on Anatase TiO$_2$ (101) by Water Dissociation in Oxygen Vacancies - UFR de Chimie de Sorbonne-Université
Article Dans Une Revue Journal of Physical Chemistry B Année : 2017

Bridging Hydroxyls on Anatase TiO$_2$ (101) by Water Dissociation in Oxygen Vacancies

Résumé

Titanium dioxide is a promising candidate for photocatalytic H$_2$ fuel production, and understanding water splitting on TiO$_2$ surfaces is vital toward explaining and improving the generation of H$_2$. In this work, we electron irradiate anatase TiO$_2$ (101) at room temperature to create metastable surface oxygen vacancies in order to investigate their ability to dissociate H$_2$O. Our scanning tunneling microscopy investigations suggest that the surface oxygen vacancies can dissociate H$_2$by forming bridging OH species. This claim is supported by theoretical calculations from the literature and our previously published spectroscopic measurements.
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Dates et versions

hal-04702398 , version 1 (19-09-2024)

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Immad M Nadeem, George T Harrison, Axel Wilson, Chi L Pang, Jörg Zegenhagen, et al.. Bridging Hydroxyls on Anatase TiO$_2$ (101) by Water Dissociation in Oxygen Vacancies. Journal of Physical Chemistry B, 2017, 122 (2), pp.834-839. ⟨10.1021/acs.jpcb.7b06955⟩. ⟨hal-04702398⟩
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