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A Combined Laboratory and Synchrotron In-Situ Photoemission Study of the Rutile TiO2 (110) / Water Interface

Byrne, C; Zahra, KM; Dhaliwal, S; Grinter, DC; Roy, K; Garzon, WQ; Held, G; ... Walton, A; + view all (2021) A Combined Laboratory and Synchrotron In-Situ Photoemission Study of the Rutile TiO2 (110) / Water Interface. Journal of Physics D: Applied Physics 10.1088/1361-6463/abddfb. (In press). Green open access

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Abstract

In-situ analysis of the TiO2 / water interface via NAP-XPS is demonstrated in both a lab based system (NAP-cell configuration) and synchrotron endstation (backfill configuration). Ultra-thin wetting layers (UTWL) of liquid water (~10 nm) are formed on a rutile TiO2 surface with minimal contamination present in addition to unique insight during the growth of the liquid films as indicated via NAP-XPS, in-situ sample temperature and background vapour pressure monitoring. Chemical changes at the solid / liquid interface are also demonstrated via healing of Ti3+ surface defect states. Photon depth profiling of the as grown liquid layers indicate that the formed films are ultra-thin (~10 nm) and likely to be continuous in nature. This work demonstrates a novel and flexible approach for studying the solid / liquid interface via NAP-XPS which is readily integrated with any form of NAP-XPS system, thereby making a critical interface of study available to a wide audience of researchers for use in operando electrochemical and photocatalytic research.

Type: Article
Title: A Combined Laboratory and Synchrotron In-Situ Photoemission Study of the Rutile TiO2 (110) / Water Interface
Open access status: An open access version is available from UCL Discovery
DOI: 10.1088/1361-6463/abddfb
Publisher version: https://iopscience.iop.org/article/10.1088/1361-64...
Language: English
Additional information: As the Version of Record of this article is going to be/has been published on a gold open access basis under a CC BY 3.0 licence, this Accepted Manuscript is available for reuse under a CC BY 3.0 licence immediately. Although reasonable endeavours have been taken to obtain all necessary permissions from third parties to include their copyrighted content within this article, their full citation and copyright line may not be present in this Accepted Manuscript version. Before using any content from this article, please refer to the Version of Record on IOPscience once published for full citation and copyright details, as permission may be required. All third party content is fully copyright protected, and is not published on a gold open access basis under a CC BY licence, unless that is specifically stated in the figure caption in the Version of Record.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
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/10120177
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