Treacy, JPW;
Hussain, H;
Torrelles, X;
Cabailh, G;
Bikondoa, O;
Nicklin, C;
Thornton, G;
(2019)
Structure of a Superhydrophilic Surface: Wet Chemically Prepared Rutile-TiO2(110)(1 x 1).
Journal Of Physical Chemistry C
, 123
(13)
pp. 8463-8468.
10.1021/acs.jpcc.9b00245.
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Abstract
Surface X-ray diffraction has been employed to quantitatively determine the geometric structure of an X-ray-induced superhydrophilic rutile-TiO2(110)(1 × 1) surface. A scatterer, assumed to be oxygen, is found at a distance of 1.90 ± 0.02 Å above the five-foldcoordinated surface Ti atom, indicating surface hydroxylation. Two more oxygen atoms, situated further from the substrate, are also included to achieve the optimal agreement between experimental and simulated diffraction data. It is concluded that these latter scatterers are from water molecules, surface-localized through hydrogen bonding. Comparing this interfacial structure with previous studies suggests that the superhydophilicity of titania is most likely to be a result of the depletion of surface carbon contamination coupled to extensive surface hydroxylation.
| Type: | Article |
|---|---|
| Title: | Structure of a Superhydrophilic Surface: Wet Chemically Prepared Rutile-TiO2(110)(1 x 1) |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1021/acs.jpcc.9b00245 |
| Publisher version: | https://doi.org/10.1021/acs.jpcc.9b00245 |
| Language: | English |
| Additional information: | This is an open access article published under a Creative Commons Attribution (CC-BY) License, which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited. https://creativecommons.org/licenses/by/4.0/ |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10074156 |
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