Unraveling the Surface Reactivity of Pristine and Ti-Doped Hematite with Water.
- Resource Type
- Academic Journal
- Authors
- Deleuze PM; Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), UMR 6303 CNRS, Université Bourgogne Franche-Comté, BP 47870, 21078 Dijon Cedex, France.; Magnan H; Université Paris Saclay, CEA, CNRS, Service Physique Etat Condense (SPEC), F-91191 Gif Sur Yvette, France.; Barbier A; Université Paris Saclay, CEA, CNRS, Service Physique Etat Condense (SPEC), F-91191 Gif Sur Yvette, France.; Silly M; Synchrotron SOLEIL, F-91192 St Aubin, France.; Domenichini B; Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), UMR 6303 CNRS, Université Bourgogne Franche-Comté, BP 47870, 21078 Dijon Cedex, France.; Dupont C; Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), UMR 6303 CNRS, Université Bourgogne Franche-Comté, BP 47870, 21078 Dijon Cedex, France.
- Source
- Publisher: American Chemical Society Country of Publication: United States NLM ID: 101526034 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1948-7185 (Electronic) Linking ISSN: 19487185 NLM ISO Abbreviation: J Phys Chem Lett Subsets: PubMed not MEDLINE; MEDLINE
- Subject
- Language
- English
Water adsorption and dissociation on undoped and Ti-doped hematite thin films were investigated using near-ambient pressure photoemission and DFT calculations. A fine understanding of doping effects is of prime importance in the framework of photoanode efficiency in aqueous conditions. By comparison to pure Fe 2 O 3 surface, the Ti(2%)-Fe 2 O 3 surface shows a lower hydroxylation level. We demonstrate that titanium induces wide structural modifications of the surface, preventing it from reaching full hydroxylation.