Bridging Hydroxyls on Anatase TiO<sub>2</sub>(101) by Water Dissociation in Oxygen Vacancies



Nadeem, Immad M, Harrison, George T, Wilson, Axel, Pang, Chi L ORCID: 0000-0002-5222-9734, Zegenhagen, Joerg and Thornton, Geoff
(2018) Bridging Hydroxyls on Anatase TiO<sub>2</sub>(101) by Water Dissociation in Oxygen Vacancies. JOURNAL OF PHYSICAL CHEMISTRY B, 122 (2). pp. 834-839.

Access the full-text of this item by clicking on the Open Access link.

Abstract

Titanium dioxide is a promising candidate for photocatalytic H<sub>2</sub> fuel production, and understanding water splitting on TiO<sub>2</sub> surfaces is vital toward explaining and improving the generation of H<sub>2</sub>. In this work, we electron irradiate anatase TiO<sub>2</sub>(101) at room temperature to create metastable surface oxygen vacancies in order to investigate their ability to dissociate H<sub>2</sub>O. Our scanning tunneling microscopy investigations suggest that the surface oxygen vacancies can dissociate H<sub>2</sub>O by forming bridging OH species. This claim is supported by theoretical calculations from the literature and our previously published spectroscopic measurements.

Item Type: Article
Depositing User: Symplectic Admin
Date Deposited: 30 Apr 2019 09:55
Last Modified: 10 Oct 2023 02:02
DOI: 10.1021/acs.jpcb.7b06955
Open Access URL: http://doi.org/10.1021/acs.jpcb.7b06955
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3039036